CN112832144A - Pedestrian suspension bridge reinforcing structure and construction process thereof - Google Patents
Pedestrian suspension bridge reinforcing structure and construction process thereof Download PDFInfo
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- CN112832144A CN112832144A CN202110021467.4A CN202110021467A CN112832144A CN 112832144 A CN112832144 A CN 112832144A CN 202110021467 A CN202110021467 A CN 202110021467A CN 112832144 A CN112832144 A CN 112832144A
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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
Abstract
The utility model belongs to the technical field of highway bridge and culvert construction technique and specifically relates to a pedestrian suspension bridge reinforced structure and construction process thereof is related to, including earth cable subassembly, stiffening beam and floor, stiffening beam fixes on the earth cable subassembly, the floor is fixed on stiffening beam, the earth cable subassembly includes two piece at least main earth cables and an at least supplementary earth cable, supplementary earth cable is located between two adjacent main earth cables, and the both ends of each earth cable support respectively in the bridge tower bottom that corresponds, and the both ends of each earth cable are fixed in the abutment through first anchor after passing corresponding bridge tower bottom respectively, stiffening beam is including being fixed in main earth cable and the crossbeam on the supplementary earth cable and fixing the longeron on the crossbeam with the detachable mode, the floor is fixed on the longeron with the detachable mode. This application has the effect that promotes support intensity, the maintenance of being convenient for is changed.
Description
Technical Field
The application relates to the technical field of highway bridge and culvert construction, in particular to a pedestrian suspension bridge reinforcing structure and a construction process thereof.
Background
A suspension bridge, also known as a suspension bridge, is a bridge with cables (or steel chains) suspended from pylons and anchored on two banks (or two ends of the bridge) as main load-bearing members of the superstructure, and is commonly used in various scenic spots for visitors to pass through, and can also be used as one of the sight spots.
In the related art, a suspension bridge generally includes a main cable, a ground cable, a stiffening beam, a floor and a suspension rod, wherein two ends of the main cable are respectively supported on corresponding bridge towers, and two ends of the main cable are respectively fixed in bridge abutments at two ends of the bridge through anchor spindles after passing through the corresponding bridge towers, two ends of the ground cable are respectively fixed in bridge tower foundations at the bottoms of the bridge towers through the anchor spindles, the stiffening beam is fixed on the ground cable through a latch, the floor is fixed on the stiffening beam, the suspension rod is fixed between the main cable and the stiffening beam, the ground cable, the stiffening beam and the floor jointly form a bridge deck structure, and the purpose of allowing visitors to pass through the bridge deck structure is achieved by installing guardrails on two sides of the bridge in the width direction.
In view of the above-mentioned related art, the inventor believes that, because the suspension bridge needs to be maintained and reinforced after being used for a long time, especially for the bridge deck structure, the longitudinal beams and the transverse beams of the stiffening beams of the bridge deck structure in the related art both adopt angle steel structures, and are fixed by welding, so that the whole stiffening beam needs to be replaced when being maintained, and the stiffening beam is inconvenient to install and fix after being replaced.
Disclosure of Invention
In order to promote the support intensity, be convenient for maintain and change, this application provides a people's suspension bridge reinforced structure and construction process thereof.
In a first aspect, the application provides a pedestrian suspension bridge reinforced structure, which adopts the following technical scheme:
the utility model provides a pedestrian suspension bridge reinforced structure, includes ground cable subassembly, stiffening beam and floor, stiffening beam fixes on the ground cable subassembly, the floor is fixed on stiffening beam, the ground cable subassembly includes two piece at least main ground cables and an at least supplementary ground cable, supplementary ground cable is located between two adjacent main ground cables, and the both ends of each ground cable support respectively in the bridge tower bottom that corresponds, and the both ends of each ground cable pass respectively behind the bridge tower bottom that corresponds in being fixed in the abutment through first anchor spindle, stiffening beam is including being fixed in the crossbeam on main ground cable and the supplementary ground cable and fixing the longeron on the crossbeam with the mode of dismantling, the floor is fixed on the longeron with the mode of dismantling.
By adopting the technical scheme, the auxiliary ground cable is additionally arranged, so that the integral supporting strength of the suspension bridge is improved, and the stability of the suspension bridge is improved; meanwhile, the crossbeam and the longitudinal beam as well as the longitudinal beam and the floor are fixed in a detachable connection mode, so that the crossbeam and the longitudinal beam are convenient to replace and maintain.
Optionally, the ends of the main ground cable and the auxiliary ground cable are supported on a bridge tower foundation at the bottom of the bridge tower, and a first arc-shaped supporting plate for supporting the main ground cable and the auxiliary ground cable is fixed on the bridge tower foundation.
Through adopting above-mentioned technical scheme, can support main earth cable and supplementary earth cable through the bridge tower basis, improve the support effect.
Optionally, the first anchor ingot comprises a first anchor rod, one end of the first anchor rod is anchored in the abutment, the other end of the first anchor rod is fixedly connected with the main ground cable or the auxiliary ground cable, a first anchor connector is arranged on the main ground cable or the auxiliary ground cable, and the first anchor connector is located between the first anchor rod and the bridge tower foundation.
Through adopting above-mentioned technical scheme, realize the fixed to the ground cable, improve overall stability.
Optionally, the crossbeam and longeron are the channel-section steel structure, the crossbeam is the multiunit, and every group is two, and two crossbeam symmetries of every group set up and the notch back on the back mutually, through lacing plate fixed connection between two crossbeams of every group, one side pterygoid lamina of longeron is connected fixedly through one side pterygoid lamina of first retaining member and every group crossbeam.
Through adopting above-mentioned technical scheme, crossbeam and longeron adopt the channel-section steel structure, are convenient for process and manufacture, and support intensity is high.
Optionally, the floor is a wood floor, the floor is fixedly connected with the longitudinal beam through a second locking piece, and a steel plate net is laid on the top surface of the floor.
Through adopting above-mentioned technical scheme, promote the bulk strength of bridge floor, use safe and reliable.
Optionally, the pedestrian suspension bridge reinforcing structure further comprises a wind-resistant cable, one end of the wind-resistant cable is fixedly connected with the cross beam close to the midspan of the bridge, and the other end of the wind-resistant cable is fixed in the cliff wall at the side span of the bridge through a second anchor.
Through adopting above-mentioned technical scheme, through setting up anti wind cable, improve overall stability.
Optionally, the crossbeam tip internal fixation has the drawing steel bar that is used for being connected with anti-wind cable, the second anchor spindle includes the second stock, second stock one end anchor is in the bank wall of abutment department, the second stock other end and anti-wind cable one end fixed connection, the anti-wind cable other end and drawing steel bar fixed connection.
Through adopting above-mentioned technical scheme, realize that the installation of anti-wind cable is fixed, joint strength is high, uses safe and reliable.
Optionally, people's suspension bridge reinforced structure is still including setting up the jib between main push-towing rope and crossbeam, the jib is a plurality of, and a plurality of jibs set up along the length direction interval of bridge, jib one end is connected fixedly through cable clamp subassembly and main push-towing rope, and the jib other end is worn to establish and is fixed in on the crossbeam.
By adopting the technical scheme, the overall performance of the suspension bridge is improved.
Optionally, people's suspension bridge reinforced structure is still including setting up the guardrail between main push-towing rope and crossbeam, the guardrail includes the railing that a plurality of length direction intervals along the bridge set up and sets up the wire net between two adjacent railings, the position of railing is corresponding with the jib, and is located the jib inboardly, the lower extreme of railing is connected with crossbeam and longeron fixed connection respectively.
Through adopting above-mentioned technical scheme, through setting up the guardrail, can play the guard action, improve the security performance.
In a second aspect, the application provides a construction process for a pedestrian suspension bridge reinforced structure, which adopts the following technical scheme:
a construction process of a pedestrian suspension bridge reinforced structure comprises the following steps:
s1, removing a floor at an abutment of a pedestrian suspension bridge before reinforcement, and drilling an anchor hole for anchoring an auxiliary ground cable on the abutment according to the actual abutment boundary condition;
s2, loosening and reinforcing the clamping lock between the front stiffening beam and the main ground cable, installing an auxiliary ground cable, adjusting the auxiliary ground cable to reach the line shape of a designed bridge deck, and fixing two ends of the auxiliary ground cable in corresponding bridge abutments through first anchor spindles respectively after the adjustment is finished;
s3, gradually detaching and replacing the cross beam, the longitudinal beam, the floor, the guardrail and the hanging rod from the midspan to the side span of the bridge;
s4, measuring the topographic conditions of two banks of the bridge abutment, constructing wind-resistant cable access roads on the two banks, determining anchor points for anchoring the wind-resistant cables by using the wind-resistant cable access roads, and drilling anchor holes for anchoring the wind-resistant cables;
s5, installing the wind-resistant cable, and adjusting the wind-resistant cable to reach the designed bridge surface linearity to finish the reinforcing construction of the pedestrian suspension bridge.
By adopting the technical scheme, the reinforcing of the pedestrian suspension bridge is realized, the integral supporting strength and stability are improved, and the construction is convenient.
In summary, the present application includes at least one of the following beneficial technical effects:
1. the auxiliary ground cable is additionally arranged, so that the integral supporting strength of the suspension bridge is improved, and the stability of the suspension bridge is improved; meanwhile, the crossbeam and the longitudinal beam as well as the longitudinal beam and the floor are fixed in a detachable connection mode, so that the replacement and the maintenance are convenient;
2. through setting up anti wind cable, improve overall stability.
Drawings
FIG. 1 is a schematic structural diagram of an embodiment of the present application;
FIG. 2 is a partial cross-sectional view of an embodiment of the present application (without tie bars);
FIG. 3 is a schematic view of an installation structure of an auxiliary earth cable according to an embodiment of the present application;
FIG. 4 is a partial cross-sectional view of an embodiment of the present application (with tie bars);
FIG. 5 is a schematic view of an installation structure of a wind-resistant cable according to an embodiment of the present application;
FIG. 6 is a schematic view of a connection structure of a boom to a main cable and a cross member according to an embodiment of the present application;
FIG. 7 is a schematic view of a connection structure of a guardrail and a cross beam according to an embodiment of the present application;
fig. 8 is a sectional view taken along line a-a of fig. 7.
Description of reference numerals: 1. a ground cable assembly; 11. a main ground cable; 12. an auxiliary ground cable; 2. a stiffening beam; 21. a cross beam; 211. a batten plate; 212. pulling and connecting the steel bars; 22. a stringer; 3. a floor; 31. steel plate nets; 4. a first anchor ingot; 41. a first anchor rod; 42. a first anchor connector; 5. an abutment; 6. a bridge tower; 61. a first arc-shaped support plate; 7. a wind resistant cable; 71. a second anchor connector; 8. a second anchor ingot; 81. a second anchor rod; 9. a boom; 91. a cable clamp assembly; 10. a guardrail; 101. a railing; 102. and (5) steel wire meshes.
Detailed Description
The present application is described in further detail below with reference to figures 1-8.
The embodiment of the application discloses pedestrian suspension bridge reinforced structure. Referring to fig. 1 and 2, the reinforcing structure includes a ground cable assembly 1, a stiffening beam 2 and a floor 3, the stiffening beam 2 is fixed on the ground cable assembly 1 through a latch, the floor 3 is fixed on the stiffening beam 2, the ground cable assembly 1 includes at least two main ground cables 11 and at least one auxiliary ground cable 12, the auxiliary ground cable 12 is located between two adjacent main ground cables 11, both ends of each ground cable are respectively supported at the bottom of the corresponding bridge tower 6, and both ends of each ground cable are respectively fixed in the bridge abutment 5 through a first anchor 4 after passing through the bottom of the corresponding bridge tower 6, the main ground cables 11 are three in the embodiment, the suspension bridge has been installed before reinforcing, the auxiliary ground cables 12 are two, the two auxiliary ground cables 12 are respectively located between two adjacent main ground cables 11, a stress structure system is formed jointly through five ground cables, so as to play a role in reinforcing.
Referring to fig. 2, the stiffening beam 2 includes a cross beam 21 fixed to the main and auxiliary ground cables 11 and 12 and a longitudinal beam 22 detachably fixed to the cross beam 21, the floor 3 is detachably fixed to the longitudinal beam 22, and the cross beam 21 and the longitudinal beam 22 and the floor 3 may be connected by screw fasteners or locking members such as latches, etc. for easy installation and disassembly.
Specifically, crossbeam 21 and longeron 22 are the channel-section steel structure, crossbeam 21 is the multiunit, every group is two, two 21 symmetries of crossbeam of every group set up and the notch back on the other hand, through lacing plate 211 fixed connection between two crossbeams 21 of every group, lacing plate 211 respectively in this embodiment with two 21 strakes welded fastening of crossbeam, one side pterygoid lamina of longeron 22 is connected fixedly through one side pterygoid lamina of first retaining member (not shown in the figure) and every group crossbeam 21, first retaining member is the high strength bolt in this embodiment to improve joint strength.
Referring to fig. 3, the ends of the main ground cable 11 and the auxiliary ground cable 12 are supported on a pylon base at the bottom of the pylon 6, and a first arc-shaped supporting plate 61 for supporting the main ground cable 11 and the auxiliary ground cable 12 is fixed on the pylon base, wherein the bending angle of the first arc-shaped supporting plate 61 is consistent with the outlet angle of the first anchor 4 in this embodiment, so as to improve the supporting effect.
Referring to fig. 3, the first anchor 4 includes a first anchor rod 41, one end of the first anchor rod 41 is anchored in the abutment 5, and the other end of the first anchor rod 41 is fixedly connected to the main ground cable 11 or the auxiliary ground cable 12, a first anchor connector 42 is disposed on the main ground cable 11 or the auxiliary ground cable 12, the first anchor connector 42 is located between the first anchor rod 41 and the bridge tower foundation, and in this embodiment, the first anchor connector 42 is a porous peripheral suspension extrusion type connector for adjusting a pre-tightening force of the ground cable.
Referring to fig. 4, the floor 3 is a wood floor, the floor 3 is fixedly connected to the longitudinal beam 22 by a second locking member (not shown), and a steel mesh 31 is laid on the top surface of the floor 3. In this embodiment, the second locking member is a locking bolt, the floor 3 is a 6 cm pine board, the thickness of the steel plate net 31 is 2 mm, and the steel plate net 31 is fixed on the floor 3 by connecting flat steel, so that the overall strength of the bridge floor is improved, and the use is safe and reliable.
Referring to fig. 1 and 4, pedestrian suspension bridge reinforced structure still includes anti-wind cable 7, anti-wind cable 7 one end and the crossbeam 21 fixed connection who is close to bridge midspan department, and the anti-wind cable 7 other end is fixed in the cliff wall of bridge side span department through second anchor 8, and anti-wind cable 7 is provided with four groups along the length direction interval of suspension bridge in this embodiment, and every group is two, and two anti-wind cables 7 of every group set up along the width direction symmetry of suspension bridge to overcome the swing of three directions of suspension bridge, improve overall stability.
Referring to fig. 4 and 5, a tie bar 212 for connecting with the wind-resistant cable 7 is welded and fixed in the end portion of the cross beam 21, the second anchor 8 includes a second anchor rod 81, one end of the second anchor rod 81 is anchored in the quay wall of the abutment 5, the other end of the second anchor rod 81 is fixedly connected with one end of the wind-resistant cable 7, the other end of the wind-resistant cable 7 is fixedly connected with the tie bar 212, the wind-resistant cable 7 is installed and fixed, the connection strength is high, and the use is safe and reliable. In this embodiment, a second anchor connector 71 is mounted to an end of the anti-wind cable 7 adjacent to the second anchor 81, and the second anchor connector 71 is similar in structure to the first anchor connector 42 and will not be described herein.
Referring to fig. 2 and 6, the pedestrian suspension bridge reinforcing structure further comprises a plurality of suspenders 9 arranged between the main cable and the cross beam 21, the suspenders 9 are arranged at intervals along the length direction of the bridge, one end of each suspender 9 is fixedly connected with the main cable through a cable clamp assembly 91, and the other end of each suspender 9 is fixed on the cross beam 21 in a penetrating manner. Cable clamp subassembly 91 includes cable clamp and cable clamp fixing bolt in this embodiment, the cable clamp is formed by two crescent steel sheet bendings, the main push-towing rope is worn to locate in the cable clamp and fixed through cable clamp fixing bolt, cable clamp lower extreme and jib 9 upper end welded fastening, the jib lower extreme has the screw thread section, this screw thread section is worn to locate in the clearance between two crossbeams 21 of a set of crossbeam 21 that corresponds, through lock nut and packing ring and crossbeam 21 fixed connection, thereby promote the wholeness ability of suspension bridge, and be convenient for install and remove.
Referring to fig. 7 and 8, pedestrian suspension bridge reinforced structure is still including setting up guardrail 10 between main push-towing rope and crossbeam 21, and guardrail 10 includes the railing 101 that a plurality of length direction intervals along the bridge set up and sets up the wire net 102 between two adjacent railings 101, and the position of railing 101 is corresponding with jib 9, and is located jib 9 inboard, and the lower extreme of railing 101 respectively with crossbeam 21 and longeron 22 welded fastening, through setting up guardrail 10, can play the guard action, improve the security performance.
The embodiment of the application also discloses a construction process of the pedestrian suspension bridge reinforced structure, which comprises the following steps:
s1, removing a floor 3 at an abutment 5 of the pedestrian suspension bridge before reinforcement, drilling an anchor hole for anchoring an auxiliary ground cable 12 on the abutment 5 according to the actual boundary condition of the abutment 5, controlling vibration during drilling, and reducing the risk of cracking of other areas of the abutment 5.
S2, loosening and reinforcing the clamping lock between the front stiffening girder 2 and the main ground cable 11, installing the auxiliary ground cable 12, adjusting the auxiliary ground cable 12 to reach the shape of a designed bridge deck, and fixing the two ends of the auxiliary ground cable 12 in the corresponding bridge abutment 5 through the first anchor 4 respectively after the adjustment is finished so as to finish the anchor construction of the auxiliary ground cable 12. Before the first anchor rod 41 is anchored, a pulling resistance test is carried out, and after the pulling resistance of the anchor rod reaches the design strength, construction can be continued, if the geological conditions do not accord with the design, a designer is informed to adjust the design. In the process of erecting the auxiliary ground cable 12, lofting is strictly carried out according to the construction lofting axis coordinate, and the line shape of the state of the empty cable is strictly controlled and adjusted according to design, namely the mid-span sag of the auxiliary ground cable 12 is strictly controlled to ensure that the designed line shape is reached when a bridge is formed. Since the steel cables used for the main and auxiliary cables 11, 12 will be permanently elongated by a certain amount during use, the auxiliary cables 12 are pre-tensioned according to their stress before being erected, so that they are deformed. In this embodiment, the auxiliary ground cable 12 is pre-tensioned at 60% ps (ps being the standard strength of the steel cable) and is loaded for 24 hours to eliminate its inelastic deformation, which makes it easier to control the vector of the main cable and ground cable assembly during spanning after erection.
S3, gradually detaching and replacing the cross beam 21, the longitudinal beam 22, the floor 3, the guardrail 10 and the hanger rod 9 from the midspan to the side span of the bridge, constructing by taking 4 meters as a unit according to the detaching and replacing suggestions, and simultaneously performing anticorrosion and antirust treatment on the exposed steel members.
S4, measuring the topographic conditions of two banks of the abutment, constructing a wind-resistant cable 7 access road on the two banks, determining an anchor point for anchoring the wind-resistant cable 7 by using the wind-resistant cable 7 access road, drilling an anchor hole for anchoring the wind-resistant cable 7, performing an anti-pulling test before an anchor spindle of a second anchor rod 81, and continuing construction after the anti-pulling force of the anchor spindle reaches the design strength, if the geological conditions are not accordant with the design, informing a design party to adjust the design.
S5, installing the wind-resistant cable 7, adjusting the wind-resistant cable 7 to reach the linear shape of the designed bridge deck, finishing the reinforcing construction of the pedestrian suspension bridge, and operating the pedestrian suspension bridge.
The above embodiments are preferred embodiments of the present application, and the protection scope of the present application is not limited by the above embodiments, so: all equivalent changes made according to the structure, shape and principle of the present application shall be covered by the protection scope of the present application.
Claims (10)
1. The utility model provides a people's suspension bridge reinforced structure, includes ground cable subassembly (1), stiffening beam (2) and floor (3), stiffening beam (2) are fixed on ground cable subassembly (1), floor (3) are fixed on stiffening beam (2), its characterized in that: the utility model discloses a stiffening beam, including stiffening beam (2), stiffening beam (2) is including being fixed in crossbeam (21) on main earth cable (11) and supplementary earth cable (12) with can dismantle the mode and fix on longeron (22) on crossbeam (21), floor (3) are fixed on longeron (22) with can dismantle the mode, the ground cable subassembly (1) is including two piece at least main earth cable (11) and an at least supplementary earth cable (12), supplementary earth cable (12) are located between two adjacent main earth cable (11), and the both ends of each earth cable support respectively in bridge tower (6) bottom that correspond, and the both ends of each earth cable are passed respectively and are fixed in abutment (5) through first anchor (4) behind bridge tower (6) bottom that correspond, stiffening beam (2) are fixed in longeron (22) on crossbeam (21) with can.
2. The pedestrian suspension bridge reinforcement structure of claim 1, wherein: the ends of the main ground cable (11) and the auxiliary ground cable (12) are supported on a bridge tower foundation at the bottom of the bridge tower (6), and a first arc-shaped supporting plate (61) for supporting the main ground cable (11) and the auxiliary ground cable (12) is fixed on the bridge tower foundation.
3. The pedestrian suspension bridge reinforcement structure according to claim 2, wherein: the first anchor ingot (4) comprises a first anchor rod (41), one end of the first anchor rod (41) is anchored in the abutment (5), the other end of the first anchor rod is fixedly connected with the main ground cable (11) or the auxiliary ground cable (12), a first anchor connector (42) is arranged on the main ground cable (11) or the auxiliary ground cable (12), and the first anchor connector (42) is located between the first anchor rod (41) and the foundation of the bridge tower (6).
4. The pedestrian suspension bridge reinforcement structure of claim 1, wherein: crossbeam (21) and longeron (22) are the channel-section steel structure, crossbeam (21) are the multiunit, and every group is two, and two crossbeam (21) symmetries of every group set up and the notch back on the back mutually, through lacing plate (211) fixed connection between two crossbeam (21) of every group, one side pterygoid lamina of longeron (22) is connected fixedly through one side pterygoid lamina of first retaining member and every group crossbeam (21).
5. The pedestrian suspension bridge reinforcement structure of claim 4, wherein: floor (3) are the timber apron, and floor (3) are connected fixedly through second retaining member and longeron (22), steel sheet net (31) have been laid to floor (3) top surface.
6. The pedestrian suspension bridge reinforcement structure of claim 4, wherein: the pedestrian suspension bridge reinforcing structure further comprises a wind-resistant cable (7), one end of the wind-resistant cable (7) is fixedly connected with a cross beam (21) close to the midspan of the bridge, and the other end of the wind-resistant cable (7) is fixed in a cliff wall at the side span of the bridge through a second anchor (8).
7. The pedestrian suspension bridge reinforcement structure of claim 6, wherein: crossbeam (21) tip internal fixation has drawing to connect reinforcing bar (212) that is used for being connected with anti-wind cable (7), second anchor (8) include second stock (81), second stock (81) one end anchor in the bank wall of abutment (5) department, the second stock (81) other end and anti-wind cable (7) one end fixed connection, anti-wind cable (7) other end and drawing to connect reinforcing bar (212) fixed connection.
8. The pedestrian suspension bridge reinforcement structure of claim 4, wherein: pedestrian suspension bridge reinforced structure is still including setting up jib (9) between main push-towing rope and crossbeam (21), jib (9) are a plurality of, and length direction interval along the bridge sets up a plurality of jibs (9), jib (9) one end is passed through cable clamp subassembly (91) and is connected fixedly with the main push-towing rope, and jib (9) other end is worn to establish and is fixed in on crossbeam (21).
9. The pedestrian suspension bridge reinforcement structure of claim 4, wherein: pedestrian suspension bridge reinforced structure is still including setting up guardrail (10) between main push-towing rope and crossbeam (21), guardrail (10) include railing (101) that a plurality of length direction intervals along the bridge set up and wire net (102) of setting between two adjacent railings (101), the position and jib (9) of railing (101) are corresponding, and are located jib (9) inboard, the lower extreme of railing (101) is connected with crossbeam (21) and longeron (22) fixed connection respectively.
10. A process for constructing a reinforcing structure for a pedestrian suspension bridge according to any one of claims 1 to 9, comprising the steps of:
s1, removing a floor (3) at an abutment (5) of a pedestrian suspension bridge before reinforcement, and drilling an anchor hole for anchoring an auxiliary ground cable (12) on the abutment (5) according to the actual abutment (5) boundary condition;
s2, loosening and reinforcing the clamping lock between the front stiffening girder (2) and the main ground cable (11), installing an auxiliary ground cable (12), adjusting the auxiliary ground cable (12) to reach the designed bridge deck line shape, and fixing two ends of the auxiliary ground cable (12) in corresponding bridge abutments (5) through first anchor stocks (4) respectively after the adjustment is finished;
s3, gradually detaching and replacing the cross beam (21), the longitudinal beam (22), the floor (3), the guardrail (10) and the hanging rod (9) from the midspan to the side span of the bridge;
s4, measuring the topographic conditions of two banks of the bridge abutment (5), constructing access roads of the wind-resistant cables (7) on the two banks, determining anchor points for anchoring the wind-resistant cables (7) by using the access roads of the wind-resistant cables (7), and drilling anchor holes for anchoring the wind-resistant cables (7);
s5, installing the wind-resistant cable (7), and adjusting the wind-resistant cable (7) to reach the linear shape of the designed bridge floor, so that the reinforcing construction of the pedestrian suspension bridge can be completed.
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN113389134A (en) * | 2021-06-07 | 2021-09-14 | 中建三局第一建设工程有限责任公司 | Steel plate strip suspension bridge and construction method thereof |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN113389134A (en) * | 2021-06-07 | 2021-09-14 | 中建三局第一建设工程有限责任公司 | Steel plate strip suspension bridge and construction method thereof |
| WO2022258080A1 (en) * | 2021-06-07 | 2022-12-15 | 中建三局第一建设工程有限责任公司 | Steel plate belt suspension bridge and construction method therefor |
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