CN111851255A - Large-span suspension bridge with replaceable main cable and main cable replacing method thereof - Google Patents
Large-span suspension bridge with replaceable main cable and main cable replacing method thereof Download PDFInfo
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- CN111851255A CN111851255A CN202010885008.6A CN202010885008A CN111851255A CN 111851255 A CN111851255 A CN 111851255A CN 202010885008 A CN202010885008 A CN 202010885008A CN 111851255 A CN111851255 A CN 111851255A
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- cable
- main cable
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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
- E01D11/00—Suspension or cable-stayed bridges
- E01D11/02—Suspension bridges
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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
- E01D19/14—Towers; Anchors ; Connection of cables to bridge parts; Saddle supports
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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
- E01D22/00—Methods or apparatus for repairing or strengthening existing bridges ; Methods or apparatus for dismantling bridges
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- Civil Engineering (AREA)
- Structural Engineering (AREA)
- Bridges Or Land Bridges (AREA)
Abstract
The invention provides a large-span suspension bridge with replaceable main cables, which comprises main cables, a cable tower, stiffening beams and slings, wherein the cable tower is positioned on two sides or in the middle of a bridge floor, the stiffening beams are steel structure main beams, the main cables comprise an upper main cable and a lower main cable, the upper main cable is a single main cable, the lower main cable is two main cables with the same diameter, the sum of the cross-sectional areas of the two lower main cables is equal to the cross-sectional area of the upper main cable, the vertical surfaces of the upper main cable and the lower main cable are in line shape and are arranged in an isosceles triangle shape on the cross section, the slings comprise upper slings and lower slings, the upper slings are connected with the upper main cables and the stiffening beams, the lower slings are connected with the lower main cables and the stiffening beams, and the upper slings and the lower slings are arranged at. The invention provides a large-span suspension bridge with replaceable main cables and a main cable replacing method thereof.
Description
Technical Field
The invention relates to the technical field of bridge construction engineering, in particular to a large-span suspension bridge with replaceable main cables and a main cable replacing method thereof.
Background
The suspension bridge is a bridge which is suspended by cable towers and anchored on two shore foundations or main cables at two ends of a main girder as main bearing members of an upper structure. The main cable end is anchored at the two sides of the foundation and called as ground anchor type suspension bridge, and the main cable end is anchored at the two ends of the main beam and called as self-anchored suspension bridge. The corrosion prevention of the main cable as a life line of the suspension bridge is an important subject of research of engineering technicians in various countries of the world, but no satisfactory result is obtained so far. The most thorough repair method for the rusted bridge cable is to replace the cable. The suspension rods and the tie rods of the arch bridge, the stay cables of the cable-stayed bridge, the slings of the suspension bridge, the anchoring system of the anchorage and the like are all replaceable, but the technology of replacing the main cables of the suspension bridge is not implemented in the world at present. If the main cable can be replaced to solve the corrosion prevention problem of the main cable of the suspension bridge, the main cable has important effects on improving the safety of the bridge and reducing economic loss caused by the durability of the main cable.
Application No.: 201810598712.6 discloses a method for replacing main cable of suspension bridge, which is to make transition construction through temporary main cable and to reform original cable saddle and anchor to anchor the temporary main cable.
Application No.: 201220723770.5 discloses a novel main cable arrangement structure of suspension bridge, the main tower of the bridge is located in the middle of the bridge floor, the main tower of the bridge is connected with the bridge floor through a double-layer main cable, the main cable is arranged on two different suspension lines in the same vertical direction, the problem that the sling of the upper main cable can not vertically pass through the lower main cable is solved by obliquely pulling the sling on two sides of the bridge floor, and a double-layer cable saddle structure is adopted when the cable passes through the tower. The sling of the main cable arrangement structure is obliquely pulled on two sides of a bridge deck to influence the passing clearance of the bridge deck, particularly, the sling has a small inclination angle at the positions with small main cable height, such as a main span, a side span beam end and the like, the bridge deck cannot meet the passing requirement, the sling is obliquely arranged to reduce the efficiency of the vertical force provided by the sling, the stress is unreasonable, and the sling is difficult to be used in actual engineering.
The technical solutions of the above-disclosed technologies are all different from the present invention, and no technical teaching exists in the above-disclosed technical documents in view of more technical features, technical problems to be solved, and advantageous effects of the present invention.
Disclosure of Invention
In order to solve the above problems, the present invention provides a large-span suspension bridge with a replaceable main cable and a main cable replacing method thereof, wherein an upper main cable and a lower main cable are arranged in a staggered manner in both the vertical direction and the horizontal direction, so that the upper main cable and the lower main cable do not affect each other in the replacing process, and the replacement of the main cable is facilitated.
To achieve the purpose, the invention provides a large-span suspension bridge with replaceable main cables, which comprises main cables, cable towers, stiffening beams and slings, wherein the cable towers are positioned at two sides or the middle of a bridge floor, the stiffening beams are steel structure main beams, the main cables comprise upper main cables and lower main cables, the upper main cables are single main cables, the lower main cables are two main cables with the same diameter, the sum of the cross-sectional areas of the two lower main cables is equal to the cross-sectional area of the upper main cables, the vertical surfaces of the upper main cables and the lower main cables are in the same line shape, the cross-sections of the upper main cables and the lower main cables are arranged in an isosceles triangle shape, the slings comprise upper slings and lower slings, the upper slings are connected with the upper main cables and the stiffening beams, the lower slings are connected with the lower main cables and the stiffening beams, and the upper slings and the lower slings are arranged at equal.
As the structure of the cable tower is further improved, a main cable saddle is arranged at the top of the cable tower to support a main cable, the main cable saddle is provided with three cable bearing grooves which are arranged in a delta shape, an upper main cable is installed in the upper cable bearing groove, and a lower main cable is installed in the two lower cable bearing grooves.
The structure of the invention is further improved, a cable clamp is arranged between the main cable and the sling for connection, the cable clamp comprises an upper main cable clamp and a lower main cable clamp, the upper main cable clamp and the lower main cable clamp are connected by two half cable clamps which are separated from each other up and down through screws, the upper main cable clamp and the lower main cable clamp are respectively provided with an ear plate, the ear plates are provided with pin holes, the ear plate of the upper main cable clamp is directly connected with the forked ear plate of the upper sling in a pin joint mode, a transverse ear plate with a pin shaft at the top is connected between the two lower main cable clamps, two ends of the pin shaft of the transverse ear plate are inserted into the pin holes of the ear plates of the lower main cable clamp and are fixed through nuts, the transverse ear plate is provided with pin holes, and the transverse ear plate is connected with the forked ear plate of the lower sling in a pin joint mode.
As a further improvement of the structure of the invention, the transverse clear distance between the two main cables of the lower main cable is larger than the width of the cable clamp of the upper main cable, so that the lower main cable can be conveniently replaced.
As a further improvement of the structure of the invention, the lug plates of the upper main cable clamp and the lower main cable clamp are also provided with spare pin holes for mounting temporary suspension cables.
As a further improvement of the structure of the invention, the main beam is provided with lug plates on the bridge deck below the upper main cable clamp and the lower main cable clamp, and the lug plates are provided with spare pin holes for mounting temporary slings.
As the structure of the invention is further improved, the stiffening beam can be a steel box girder, a steel truss girder, a steel plate girder or other steel structure main girders, so as to reduce the dead weight.
As the structure of the invention is further improved, the long-span suspension bridge is an earth anchor type suspension bridge or a self-anchored suspension bridge, and the earth anchor type suspension bridge or the self-anchored suspension bridge can be used.
As the structure of the invention is further improved, the long-span suspension bridge adopts a single-span or double-span or multi-span arrangement form, and the single-span or double-span or multi-span arrangement form can be used.
As the structure of the invention is further improved, the structural form of the long-span suspension bridge adopts a simple support structure or a continuous structure, and the simple support structure or the continuous structure can be used.
The invention relates to a method for replacing a main cable of a long-span suspension bridge, which comprises the steps of replacing an upper main cable and replacing a lower main cable, and comprises the following specific steps;
the specific steps of the upper main cable replacement are as follows:
a. closing bridge deck traffic;
b. a temporary sling is arranged between the upper main cable clamp and the stiffening beam;
c. tensioning the temporary sling to unload the cable force of the upper sling, and then removing the upper sling;
d. gradually loosening the temporary sling to enable the upper main cable to return to an empty cable state;
e. releasing the anchors at the two ends of the upper main cable and the top of the tower, and removing the upper main cable and the cable clamp of the upper main cable;
f. erecting a new upper main cable;
g. installing a main cable clamp;
h. a temporary sling is arranged between the upper main cable clamp and the stiffening beam;
i. tensioning the temporary sling to enable the upper main cable to be in a bridge line shape;
j. installing a sling;
k. gradually loosening the temporary sling to transfer the sling force to the upper sling;
after the anticorrosion treatment of a new upper main cable is carried out, the replacement of the upper main cable is completed;
the specific steps of the lower main cable replacement are as follows:
a. closing bridge deck traffic;
b. a temporary sling is arranged between the lower main cable clamp and the stiffening beam;
c. tensioning the temporary sling, unloading the cable force of the lower sling, and then dismantling the lower sling;
d. dismantling the transverse lug plates between the lower main cable clamps;
e. gradually loosening the temporary sling to enable the lower main cable to return to an empty cable state;
f. releasing the anchors at the two ends of the lower main cable and the top of the tower, and removing the lower main cable and the lower main cable clamp;
g. erecting a new lower main cable;
h. installing a lower main cable clamp;
i. a temporary sling is arranged between the lower main cable clamp and the stiffening beam;
j. tensioning the temporary sling to enable the lower main cable to be in a bridge line shape;
k. installing a transverse lug plate between the lower main cable clamps;
l, installing a lower sling;
m, gradually loosening the temporary sling to transfer the sling force to the lower sling;
and n, after the anticorrosion treatment of the new lower main cable is carried out, the replacement of the lower main cable is completed.
Compared with the prior art, the invention has the following beneficial effects:
1. in the process of replacing the main cable of the large-span suspension bridge, the line shape of the old main cable is restored from the bridge forming line shape to the empty cable line shape when the old main cable is unloaded, the line shape of the new main cable reaches the bridge forming line shape from the empty cable line shape when the new main cable bears load, and the height difference between the empty cable line shape and the bridge forming line shape is large.
2. The invention has the advantages that the load born by the old main cable is transferred to the lower main cable when the upper main cable is replaced, and the load born by the lower main cable is transferred to the upper main cable when the lower main cable is replaced, so that the temporary main cable is not needed to be erected and the original main cable anchoring structure is not needed to be modified in the replacement process of the main cable, the construction difficulty is greatly reduced, and the cost and the construction period are reduced.
3. The cross section areas of the upper main cable and the lower main cable are designed to be equal, and the vertical surfaces of the upper main cable and the lower main cable are consistent, so that the upper main cable and the lower main cable can bear half of the load of a bridge respectively, the live load of the bridge deck is eliminated by closing bridge deck traffic in the replacement process of the main cables, the upper main cable or the lower main cable only bears the dead load of the bridge, the main cable is a steel structure main beam with light dead weight, the stress of the main cable can meet the standard requirement, and the design is scientific and reasonable.
4. The invention splits the single main cable with large diameter into three main cables, thus reducing the size of the main cables, enabling the machines for manufacturing and constructing the main cables to be miniaturized, facilitating construction and maintenance and being beneficial to improving the span of the suspension bridge.
Drawings
FIG. 1 is a schematic structural diagram of a long-span suspension bridge according to the present invention;
FIG. 2 is a schematic structural section of a main cable saddle at the top of the tower according to the present invention;
FIG. 3 is a schematic cross-sectional view of the cable construction at the point of the sling of the present invention;
FIG. 4 is a schematic cross-sectional view of the cable construction at the lower sling of the present invention;
FIG. 5 is a schematic diagram of the transverse arrangement of the stiffening beams and cable structures at the slings of the double-deck suspension bridge according to the present invention;
FIG. 6 is a schematic diagram of the transverse arrangement of the stiffening beams and the cable structure at the bottom sling of the double-deck suspension bridge according to the present invention;
FIG. 7 is a schematic diagram of the transverse arrangement of the stiffening beams and cable structures at the slings of the single-deck suspension bridge of the present invention;
FIG. 8 is a schematic diagram of the transverse arrangement of the stiffening beams and the cable structure at the sling under the single-rope suspension bridge of the present invention.
Marked as 1. upper main cable; 2. a lower main cable; 3. a cable tower; 4. a stiffening beam; 5. an upper sling; 6. a lower sling; 7. a main cable saddle; 8. an upper main cable clamp; 9. a lower main cable clamp; 10. a transverse ear plate; 11. and a nut.
Detailed Description
The invention is described in further detail below with reference to the following detailed description and accompanying drawings:
the invention provides a large-span suspension bridge with replaceable main cables and a main cable replacing method thereof.
As an embodiment of the present invention, the present invention provides a main cable-replaceable large span suspension bridge as shown in fig. 1 to 8, which includes a main cable, a cable tower 3, a stiffening beam 4 and a sling, wherein the main cable includes an upper main cable 1 and a lower main cable 2, the upper main cable 1 is a single main cable, the lower main cable 2 is two main cables having the same diameter, the sum of the cross-sectional areas of the two lower main cables 2 is equal to the cross-sectional area of the upper main cable 1, the vertical surfaces of the upper main cable 1 and the lower main cable 2 have the same line shape, and the cross-sections are arranged in an isosceles triangle shape.
The cable tower 3 is located the bridge floor both sides or in the middle of, and 3 tops of cable tower establish main cable saddle 7 and support the main push-towing rope, main cable saddle 7 is equipped with the cable groove that holds that three article font was arranged, and main push-towing rope 1 is installed to the cable groove of holding of top, and main push-towing rope 2 is down installed to two cable grooves of holding of below.
The stiffening beam 4 is a steel structure main beam, and can be a steel box girder, a steel truss girder or a steel plate girder.
The hoist cable includes upper sling 5 and lower sling 6, upper sling 5 connects upper main rope 1 and stiffening beam 4, main rope 2 and stiffening beam 4 under the 6 connection of lower sling, upper sling 5 and lower sling 6 are arranged along the equidistant interval of bridge direction.
The main cable and the sling are connected through a cable clamp, the cable clamp comprises an upper main cable clamp 8 and a lower main cable clamp 9, the upper main cable clamp and the lower main cable clamp are connected through two halves of screw rods which are separated from each other from top to bottom, the upper main cable clamp 8 and the lower main cable clamp 9 are provided with lug plates, and pin holes are formed in the lug plates. The ear plate of the upper main cable clamp 8 is directly connected with the fork ear plate of the upper sling 5 by pins, a transverse ear plate 10 with a pin shaft at the top is connected between the two lower main cable clamps 9, and the two ends of the pin shaft are inserted into the pin holes of the ear plates of the lower main cable clamps and are fixed by nuts 11. The transverse ear plates 10 are provided with pin holes, and the transverse ear plates 10 are in pin joint with the fork-shaped ear plates of the lower sling 6.
Further, the transverse clear distance between the two main cables of the lower main cable 2 is larger than the width of the upper main cable clamp 8.
Furthermore, spare pin holes for installing temporary slings are further formed in the lug plates of the upper main cable clamp 8 and the lower main cable clamp 9.
Furthermore, the main beam 4 is provided with an ear plate on the bridge deck below the upper main cable clamp 8 and the lower main cable clamp 9, and the ear plate is provided with a spare pin hole for installing a temporary sling.
Furthermore, the long-span suspension bridge can be an earth anchor type suspension bridge or a self-anchored suspension bridge.
Further, the long-span suspension bridge can adopt the arrangement forms of single span, double span, multi-span and the like, and the structural form can adopt simple support, continuity and the like.
The invention relates to a method for replacing a main cable of a long-span suspension bridge, which comprises the following specific steps of replacing the upper main cable;
a. closing bridge deck traffic;
b. a temporary sling is arranged between the upper main cable clamp 8 and the stiffening beam 4;
c. tensioning the temporary sling to unload the cable force of the upper sling 5, and then removing the upper sling 5;
d. gradually loosening the temporary sling to enable the upper main cable 1 to return to an empty cable state;
e. the anchors at the two ends of the upper main cable 1 and the top of the tower are released, and the upper main cable 1 and the upper main cable clamp 8 are removed;
f. erecting a new upper main cable 1;
g. installing a main cable clamp 8;
h. a temporary sling is arranged between the upper main cable clamp 8 and the stiffening beam 4;
i. tensioning the temporary sling to enable the upper main cable 1 to be in a bridge line shape;
j. installing a sling 5;
k. gradually loosening the temporary sling to transfer the sling force to the upper sling 5;
and l, after the anticorrosion treatment of the new upper main cable 1 is carried out, the replacement of the upper main cable 1 is completed.
The invention relates to a method for replacing a main cable of a long-span suspension bridge, which comprises the following specific steps of replacing a lower main cable;
a. closing bridge deck traffic;
b. a temporary sling is arranged between the lower main cable clamp 9 and the stiffening beam 4;
c. tensioning the temporary sling, unloading the cable force of the lower sling 6, and then dismantling the lower sling 6;
d. the transverse lug plates 10 between the lower main cable clamps 9 are removed;
e. gradually loosening the temporary sling to enable the lower main cable 2 to return to an empty cable state;
f. the two ends of the lower main cable and the anchoring of the tower top are released, and the lower main cable 2 and the lower main cable clamp 9 are detached;
g. erecting a new lower main cable 2;
h. installing a lower main cable clamp 9;
i. a temporary sling is arranged between the lower main cable clamp 9 and the stiffening beam 4;
j. tensioning the temporary sling to enable the lower main cable 2 to be in a bridge wire shape;
k. installing a transverse lug plate 10 between the lower main cable clamps 9;
l, installing a lower sling 6;
m, gradually loosening the temporary sling to transfer the sling force to the lower sling 6;
and n, after the anticorrosion treatment of the new lower main cable 2 is carried out, the replacement of the lower main cable 2 is completed.
The above description is only a preferred embodiment of the present invention, and is not intended to limit the present invention in any way, but any modifications or equivalent variations made according to the technical spirit of the present invention are within the scope of the present invention as claimed.
Claims (10)
1. The utility model provides a main push-towing rope bridge that main push-towing rope can trade, includes main push-towing rope, cable tower (3), stiffening beam (4) and hoist cable, cable tower (3) are located bridge floor both sides or middle, stiffening beam (4) are steel construction girder, its characterized in that: the main push-towing rope comprises an upper main push-towing rope (1) and a lower main push-towing rope (2), the upper main push-towing rope (1) is a single main push-towing rope, the lower main push-towing rope (2) is two main push-towing ropes with the same diameter, the sum of the cross-sectional areas of the two lower main push-towing ropes (2) is equal to the cross-sectional area of the upper main push-towing rope (1), the upper main push-towing rope (1) and the lower main push-towing rope (2) are consistent in vertical surface shape, the upper main push-towing rope (1) and the lower main push-towing rope (2) are arranged on the cross section in an isosceles triangle shape, the sling comprises an upper sling (5) and a lower sling (6), the upper main push-towing rope (1) and a stiffening beam (4) are connected by the upper sling (5), the lower main push-towing rope (2) and the stiffening beam (4).
2. A main cable replaceable large span suspension bridge according to claim 1, wherein a main cable saddle (7) is arranged at the top of the cable tower (3) for supporting the main cable, the main cable saddle (7) is provided with three cable receiving grooves arranged in a delta shape, the upper cable receiving groove is provided with the upper main cable (1), and the lower two cable receiving grooves are provided with the lower main cable (2).
3. The large-span suspension bridge with replaceable main cables as claimed in claim 1, wherein the main cables are connected with the suspension cables by cable clamps, the cable clamps comprise an upper main cable clamp (8) and a lower main cable clamp (9), the upper main cable clamp (8) and the lower main cable clamp (9) are connected by two cable clamp halves separated from each other up and down by screws, the upper main cable clamp (8) and the lower main cable clamp (9) are provided with ear plates and pin holes on the ear plates, the ear plate of the upper main cable clamp (8) is directly pin-jointed with the forked ear plate of the upper suspension cable (5), a transverse ear plate (10) with a pin shaft at the top is connected between the two lower main cable clamps (9), two ends of the pin shaft of the transverse ear plate (10) are inserted into the pin holes of the ear plates of the lower main cable clamp (9) and fixed by nuts (11), and the transverse ear plate (10) is further provided with pin holes, the transverse lug plates (10) are in pin joint with the fork-shaped lug plates of the lower sling (6).
4. A main-cable-replaceable large-span suspension bridge according to claim 1, characterized in that the transverse clear distance between two main cables of the lower main cable (2) is larger than the width of the upper main cable clamp (8).
5. The large-span suspension bridge with replaceable main cables as claimed in claims 1 and 2, wherein the lug plates of the upper main cable clamp (8) and the lower main cable clamp (9) are further provided with spare pin holes for installing temporary suspension cables, the stiffening beam (4) is provided with lug plates on the bridge floor below the upper main cable clamp (8) and the lower main cable clamp (9), and the lug plates are provided with spare pin holes for installing temporary suspension cables.
6. A main-cable-replaceable long-span suspension bridge according to claim 1, wherein the stiffening beams (4) are steel box beams or steel trussed beams or steel plate beams.
7. A main-cable-replaceable large-span suspension bridge according to claim 1, wherein the large-span suspension bridge is an earth-anchored suspension bridge or a self-anchored suspension bridge.
8. A main-cable-replaceable large-span suspension bridge according to claim 1, wherein the large-span suspension bridge is in a single-span or double-span or multi-span arrangement.
9. A main-cable-replaceable large-span suspension bridge according to claim 1, wherein the structural form of the large-span suspension bridge is a simple support structure or a continuous structure.
10. A method for replacing a main cable of a long-span suspension bridge comprises the steps of replacing an upper main cable and replacing a lower main cable, and is characterized by comprising the following specific steps;
the specific steps of the upper main cable replacement are as follows:
a. closing bridge deck traffic;
b. a temporary sling is arranged between the upper main cable clamp (8) and the stiffening beam (4);
c. tensioning the temporary sling to unload the cable force of the upper sling (5), and then removing the upper sling (5);
d. gradually loosening the temporary sling to enable the upper main cable (1) to return to an empty cable state;
e. the anchors at the two ends of the upper main cable (1) and the top of the tower are released, and the upper main cable (1) and the upper main cable clamp (8) are detached;
f. erecting a new upper main cable (1);
g. installing a main cable clamp (8);
h. a temporary sling is arranged between the upper main cable clamp (8) and the stiffening beam (4);
i. tensioning the temporary sling to enable the upper main cable (1) to be in a bridge line shape;
j. installing a sling (5);
k. gradually loosening the temporary sling to transfer the sling force to the upper sling (5);
after the new upper main cable (1) is subjected to antiseptic treatment, the upper main cable (1) is replaced;
the specific steps of the lower main cable replacement are as follows:
a. closing bridge deck traffic;
b. a temporary sling is arranged between the lower main cable clamp (9) and the stiffening beam (4);
c. tensioning the temporary sling to unload the cable force of the lower sling (6), and then removing the lower sling (6);
d. removing the transverse lug plate (10) between the lower main cable clamps (9);
e. gradually loosening the temporary sling to enable the lower main cable (2) to return to an empty cable state;
f. the two ends of the lower main cable (2) and the anchoring of the tower top are released, and the lower main cable (2) and the lower main cable clamp (9) are detached;
g. erecting a new lower main cable (2);
h. installing a lower main cable clamp (9);
i. a temporary sling is arranged between the lower main cable clamp (9) and the stiffening beam (4);
j. tensioning the temporary sling to enable the lower main cable (2) to be in a bridge line shape;
k. mounting a transverse lug plate (10) between the lower main cable clamps (9);
l, installing a lower sling (6);
m, gradually loosening the temporary sling to transfer the force of the sling to the lower sling (6);
and n, after the anticorrosion treatment of the new lower main cable (2), the replacement of the lower main cable (2) is completed.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202010885008.6A CN111851255A (en) | 2020-08-28 | 2020-08-28 | Large-span suspension bridge with replaceable main cable and main cable replacing method thereof |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202010885008.6A CN111851255A (en) | 2020-08-28 | 2020-08-28 | Large-span suspension bridge with replaceable main cable and main cable replacing method thereof |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN111851255A true CN111851255A (en) | 2020-10-30 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202010885008.6A Pending CN111851255A (en) | 2020-08-28 | 2020-08-28 | Large-span suspension bridge with replaceable main cable and main cable replacing method thereof |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113897849A (en) * | 2021-10-08 | 2022-01-07 | 张家港保税区金港建设工程质量检测有限公司 | Three-branch-shaped single main cable pedestrian suspension bridge and construction method thereof |
| CN114922047A (en) * | 2022-04-21 | 2022-08-19 | 汕头大学 | Short suspension rod for suspension bridge |
-
2020
- 2020-08-28 CN CN202010885008.6A patent/CN111851255A/en active Pending
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113897849A (en) * | 2021-10-08 | 2022-01-07 | 张家港保税区金港建设工程质量检测有限公司 | Three-branch-shaped single main cable pedestrian suspension bridge and construction method thereof |
| CN113897849B (en) * | 2021-10-08 | 2024-06-11 | 张家港保税区金港建设工程质量检测有限公司 | Three-fork single main cable pedestrian suspension bridge and construction method thereof |
| CN114922047A (en) * | 2022-04-21 | 2022-08-19 | 汕头大学 | Short suspension rod for suspension bridge |
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