Construction method of full-beam integral work frame for maintenance construction of railway bridges on operating lines

Abstract

The present invention proposes a construction method of a fully enclosed beam integral work frame for the maintenance and construction of an operating line railway bridge, comprising the following steps: removing the outermost walking board of the railway bridge sidewalk to expose the surface of the angle steel brackets of the sidewalks on both sides; laying a longitudinal full-length tube on the angle steel brackets of the sidewalks on both sides; hanging a plurality of hangers on the longitudinal full-length tubes on both sides, and the hangers on both sides correspond to each other; connecting the two corresponding hangers on the left and right through the bottom cross bar of the beam, the bottom cross bar of the beam abuts against the horseshoe bottom surface of the two T beams upward, and hanging on the T beam through the hanging assembly; installing the frame cross bar and the frame vertical bar on both sides of the railway bridge, so that they cooperate with the hanger and the bottom cross bar of the beam, so as to form a "well"-shaped frame structure on both sides of the railway bridge; laying pads in the longitudinal direction between the upper frames of each "well"-shaped frame structure on each side, so as to form an operating layer on both sides of the railway bridge. The present invention effectively alleviates the pressure of skylight demand and achieves the purpose of reducing costs and increasing efficiency.

Description

Technical Field

[0001] The invention relates to the technical field of railway bridge maintenance construction, and in particular to a construction method of a fully-wrapped integral work frame for maintenance construction of railway bridges on operating lines. Background Art

[0002] With the continuous construction and development of national railways, some old railway lines have deteriorated with the baptism of time. Due to the normal operation of trains on the operating line railway, according to the relevant railway safety regulations, the bridge contact network column can only be included in the off-point construction 2m outside, so the replacement of sidewalk angle steel brackets, walking boards, sidewalk railings, avoidance platforms and other facilities does not meet the off-point construction conditions, and all must be included in the skylight point construction. Skylight construction time is short, manpower and material resources are large, the overall construction period is long, and the construction efficiency is high, which greatly increases the construction cost. Therefore, at present, railway bridges also often use full-height scaffolding construction or small slings on both sides for maintenance work. The full-height scaffolding has large manpower and material investment, a long overall construction period, low construction efficiency, and is greatly affected by the environment. The small slings on both sides are independent structures with poor frame stability, small operating space, and low safety factor. Summary of the invention

[0003] In view of the problems existing in the above-mentioned prior art, the present invention aims to provide a construction method of a fully-wrapped integral working frame for the maintenance construction of operating railway bridges, which can effectively alleviate the pressure of skylight demand and achieve the purpose of reducing costs and increasing efficiency while ensuring personal safety and driving safety.

[0004] In order to achieve the above-mentioned object, the present invention proposes a construction method of a fully enclosed beam integral work frame for maintenance construction of an operating line railway bridge, comprising the following steps:

[0005] S1. Remove the outermost walking board of the railway bridge sidewalk to expose the surface of the angle steel brackets on both sides of the sidewalk;

[0006] S2. Lay a longitudinal full-length pipe on the angle steel brackets of the sidewalks on both sides;

[0007] S3, a plurality of suspension rods are respectively hung on the longitudinal through-length tubes on both sides, and the plurality of suspension rods are arranged at intervals along the longitudinal direction, and the suspension rods on both sides correspond to each other one by one;

[0008] S4, connecting the two corresponding hangers on the left and right through the bottom cross bar of the beam, the bottom cross bar of the beam abuts against the horseshoe bottom surfaces of the two T beams upward, and is hung on the T beam through a hanging assembly;

[0009] S5. Install frame cross bars and frame vertical bars on both sides of the railway bridge respectively, so that they cooperate with the hanger rods and the cross bars at the bottom of the beam, thereby forming a "well"-shaped frame structure on both sides of the railway bridge;

[0010] S6. Pads are laid longitudinally between the upper frames of the “well”-shaped frame structures on each side, and the pads are transversely limited between the hangers and the frame uprights, thereby forming a working layer on both sides of the railway bridge.

[0011] In the above scheme: the hanging assembly includes a longitudinal connecting pipe arranged in the middle of the beam bottom cross bar, connecting all the beam bottom cross bars together, the longitudinal connecting pipe is connected to a plurality of beam center bars, the plurality of beam center bars are arranged at intervals along the longitudinal direction, the upper end of each beam center bar is connected to a beam center cross bar, the beam center cross bar is clamped between the horseshoes of the two T beams. The two ends of the beam center cross bar are cut with a 45° bevel, and the bevel surface coincides with the slope surface of the side end of the T beam horseshoe to ensure stability. The spacing between the first three beam center cross bars at both ends of the bridge is 0.5m, and the remaining spacing is not more than 1.5m.

[0012] In the above scheme: a frame cross bar is connected to the middle of each suspension rod, and the frame cross bars on both sides are inwardly abutted against the web of the corresponding side T beam, and a frame vertical bar is connected to the middle of each frame cross bar, the upper end of the frame vertical bar is abutted against the T beam wing plate, and the lower end of the frame vertical bar is connected to the cross bar at the bottom of the beam, thereby forming a "well"-shaped frame structure on both sides of the railway bridge. This structure restricts the horizontal and vertical displacement of the frame by arranging the frame cross bars inwardly abutting against the web of the T beam and the frame vertical bars upwardly abutting against the T beam wing plate, thereby ensuring the stability of the frame.

[0013] In the above scheme: an anti-fall net is fully laid longitudinally between the lower frames of each "well"-shaped frame structure on each side, and the anti-fall net is laterally limited between the hanger and the frame uprights, thereby forming an anti-fall layer below the working layer, fully ensuring the personal safety of construction workers and reducing construction safety risks.

[0014] In the above scheme: fence nets are arranged on both sides of the working layer, and the fence nets are fixed on corresponding hangers or frame uprights, so as to fully ensure the personal safety of construction workers and reduce construction safety risks.

[0015] In the above scheme: the longitudinal full-length tube is a double-piece steel tube, and a wooden square is placed between the longitudinal full-length tube and the sidewalk angle steel bracket. The wooden square can be tied with wire and fixed to the sidewalk angle steel bracket to prevent it from falling off due to train vibration. The wooden square can be used to level the longitudinal full-length tube and separate the longitudinal full-length tube from the sidewalk angle steel bracket to facilitate the replacement of the sidewalk angle steel bracket (remove one and install one), so as to avoid the new sidewalk angle steel bracket being affected by the limit of the longitudinal full-length tube when being installed.

[0016] In the above scheme: the longitudinal full-length tube, beam bottom cross bar, hanger rod, frame cross bar, frame vertical bar, longitudinal connecting tube, beam middle vertical bar and beam middle cross bar are all steel pipes, and the corresponding two connected steel pipes are connected by steel pipe fasteners, so that the integral work frame is easy to disassemble and assemble and can be reused.

[0017] In the above scheme: the longitudinal connecting pipe is hung on the transverse partition through a gate-type hanger, the gate-type hanger is hung on the transverse partition along the longitudinal direction, and the bottom of the gate-type hanger is fixed on the longitudinal connecting pipe. By increasing the fixing points of the longitudinal connecting pipe and the railway bridge, the structural stability of the work frame is further improved. The gate-type hanger can be composed of three steel pipes connected in a gate shape, and the three steel pipes are also connected by steel pipe fasteners.

[0018] In the above plan: before the walking board is removed, a full-length auxiliary safety rope is first laid at both ends of the railway bridge. The full-length auxiliary safety rope uses a 10.5mm rope. Both ends of the full-length auxiliary safety rope are connected around the bottom of the rail and the joint of the sleepers. When removing the walking board, the workers need to fasten their safety belts and hang the safety belts on the full-length auxiliary safety rope. After the skylight construction is completed, the full-length auxiliary safety rope will be removed to fully protect the personal safety of the construction workers and reduce construction safety risks.

[0019] In the above scheme: a work safety rope is set every 4 to 6 meters on the railway bridge, and the two ends of the work safety rope are fixed on the corresponding sidewalk angle steel bracket. When working at the bottom of the beam, the operator needs to wear a safety belt and hang the safety belt on the work safety rope to fully protect the personal safety of the construction personnel and reduce the safety risk of construction. The work at the bottom of the beam includes the installation of the frame crossbars and frame vertical poles.

[0020] The beneficial effects of the present invention are as follows: the frame is erected by using the hangers on both sides of the beam and the hanging components in the beam as the load-bearing points, and the frame crossbars and frame vertical poles are installed to cooperate with the hangers and the crossbars at the bottom of the beam, thereby forming a "well"-shaped frame structure on both sides of the railway bridge to constrain the horizontal and vertical displacement of the frame and ensure the stability of the frame; the entire work frame is a fully enclosed beam integral work frame, which has a larger operating space, stronger frame stability and higher safety than the construction of a small hanging bag work frame on one side; compared with the construction of a full-floor scaffolding work platform, the manpower and material resources are nearly doubled, greatly shortening the renovation period; the operator can directly complete the replacement of facilities such as sidewalk angle steel brackets and sidewalk railings on the working layer of the work frame, reducing the demand for skylights. In short, the present invention effectively alleviates the pressure of skylight demand on the premise of ensuring personal safety and driving safety, and achieves the purpose of reducing costs and increasing efficiency. BRIEF DESCRIPTION OF THE DRAWINGS

[0021] Figure 1 It is a structural schematic diagram of the present invention.

[0022] Figure 2 This is a schematic diagram of the underside of a railway bridge.

[0023] Figure 3 It is a structural diagram of the hanging assembly.

[0024] Figure 4 yes Figure 1 A magnified schematic diagram of center A. DETAILED DESCRIPTION

[0025] like Figure 1 As shown in FIG. 4 , a construction method of a fully enclosed integral work frame for maintenance construction of an operating line railway bridge is provided. The railway bridge comprises two T-beams 2 arranged side by side in a transverse manner and a plurality of transverse diaphragms 3 arranged between the two T-beams 2. The plurality of transverse diaphragms 3 are arranged at intervals. The construction method mainly comprises the following steps:

[0026] S1. Remove the outermost walking board of the railway bridge sidewalk to expose the surface of the angle steel brackets 1 of the sidewalk on both sides.

[0027] S2. Lay a longitudinal full-length pipe 4 on the sidewalk angle brackets 1 on both sides.

[0028] S3. A plurality of suspension rods 5 are respectively hung on the longitudinal through-length tubes 4 on both sides. The plurality of suspension rods 5 are arranged at intervals along the longitudinal direction, and the suspension rods 5 on both sides correspond to each other one by one.

[0029] S4. Connect the two corresponding hangers 5 on the left and right through the beam bottom cross bar 6. The beam bottom cross bar 6 is upwardly abutted against the horseshoe bottom surfaces of the two T beams 2 and is hung on the T beam 2 through a hanging assembly.

[0030] S5. Install frame cross bars 7 and frame vertical bars 8 on both sides of the railway bridge respectively, so that they cooperate with the hanger rods 5 and the bottom cross bars 6 of the beam, thereby forming a "well"-shaped frame structure on both sides of the railway bridge.

[0031] S6. Pads 9 are fully laid longitudinally between the upper frames of the "well"-shaped frame structures on each side, and the pads 9 are limited transversely between the hanger 5 and the frame uprights 8, so as to form working layers on both sides of the railway bridge.

[0032] Preferably, the hanging assembly includes a longitudinal connecting pipe 10 arranged in the middle of the beam bottom cross bar 6, connecting all the beam bottom cross bars 6 together, and a plurality of beam center bars 11 are connected to the longitudinal connecting pipe 10, and the plurality of beam center bars 11 are arranged at intervals in the longitudinal direction, and the upper end of each beam center bar 11 is connected to a beam center cross bar 12, and the beam center cross bar 12 is clamped between the horseshoes of the two T beams 2. The two ends of the beam center cross bar 12 are cut with a 45° bevel, and the bevel surface coincides with the slope surface of the horseshoe side end of the T beam 2 to ensure stability. The spacing between the first three beam center cross bars 6 at both ends of the bridge is 0.5m, and the remaining spacing is not more than 1.5m.

[0033] Preferably, a frame cross bar 7 is connected to the middle of each hanger 5, and the frame cross bars 7 on both sides are inwardly abutted against the web of the corresponding side T-beam 2, and a frame vertical bar 8 is connected to the middle of each frame cross bar 7, the upper end of the frame vertical bar 8 is abutted against the wing plate of the T-beam 2, and the lower end of the frame vertical bar 8 is connected to the bottom cross bar 6 of the beam, thereby forming a "well" shaped frame structure on both sides of the railway bridge.

[0034] At multiple positions in the longitudinal direction of the railway bridge, the present invention arranges the frame cross bars 7 on both sides to abut inwardly on the webs of the corresponding T-beams 2, arranges the frame vertical bars 8 on both sides to abut upward on the wing plates of the corresponding T-beams 2, arranges the bottom cross bars 6 to abut upward on the horseshoe bottom surfaces of the two T-beams 2, arranges two hangers 5 to be hung on the corresponding sidewalk angle steel brackets 1, and arranges the bottom cross bars 6 to be hung on the T-beams 2 through the hanging components, thereby forming a five-abutment and three-hanging fully-inclusive bridge integral structure, and the cooperation of each abutment point and hanging point can constrain the horizontal and vertical displacement of the frame to ensure the stability of the frame.

[0035] Preferably, an anti-fall net 15 is fully laid along the longitudinal direction between the lower frames of each "well"-shaped frame structure on each side, and the anti-fall net 15 is laterally limited between the hanger 5 and the frame uprights 8, thereby forming an anti-fall layer below the working layer, fully ensuring the personal safety of construction workers and reducing construction safety risks.

[0036] Preferably, fence nets 16 are arranged on both sides of the working layer, and the fence nets 16 are fixed on the corresponding suspension rods 5 or frame uprights 8 to fully protect the personal safety of construction workers and reduce construction safety risks.

[0037] Preferably, the longitudinal full-length tube 4 is a double-piece steel tube, and a wooden square 14 is provided between the longitudinal full-length tube 4 and the sidewalk angle steel bracket 1. The wooden square 14 can be tied and fixed to the sidewalk angle steel bracket 1 with wire to prevent it from falling off due to train vibration. The wooden square 14 can be used to level the longitudinal full-length tube 4 and to separate the longitudinal full-length tube 4 from the sidewalk angle steel bracket 1, so as to facilitate the replacement of the sidewalk angle steel bracket 1 (removing one and installing one), and avoid the new sidewalk angle steel bracket 1 being affected by the limit of the longitudinal full-length tube 4 when installing.

[0038] Preferably, the longitudinal through-length tube 4, the bottom cross bar 6, the hanger 5, the frame cross bar 7, the frame uprights 8, the longitudinal connecting tube 10, the beam middle uprights 11 and the beam middle cross bar 12 are all steel pipes, and the corresponding two connected steel pipes are connected by steel pipe fasteners, so that the integral work frame is easy to disassemble and assemble and can be reused.

[0039] Preferably, the longitudinal connecting pipe 10 is hung on the diaphragm 3 through a gate-shaped hanger 13, and the gate-shaped hanger 13 is hung on the diaphragm 3 longitudinally. The bottom of the gate-shaped hanger 13 is fixed on the longitudinal connecting pipe 10. By increasing the fixing points of the longitudinal connecting pipe 10 and the railway bridge, the structural stability of the work frame is further improved. The gate-shaped hanger 13 can be composed of three steel pipes connected in a gate shape, and the three steel pipes are also connected by steel pipe fasteners.

[0040] It is best to first lay a full-length auxiliary safety rope at both ends of the railway bridge before removing the walking board. The full-length auxiliary safety rope uses a 10.5mm rope. The two ends of the full-length auxiliary safety rope are connected around the bottom of the rail and the joint of the sleepers. When removing the walking board, the workers need to fasten their safety belts and hang the safety belts on the full-length auxiliary safety rope. After the skylight construction is completed, the full-length auxiliary safety rope will be removed to fully protect the personal safety of the construction workers and reduce construction safety risks.

[0041] Preferably, a work safety rope is set every 4 to 6 meters on the railway bridge, and both ends of the work safety rope are fixed on the corresponding sidewalk angle steel bracket 1. When working at the bottom of the beam, the operator needs to wear a safety belt and hang the safety belt on the work safety rope to fully protect the personal safety of the construction personnel and reduce the safety risk of construction. The work at the bottom of the beam includes installing the frame cross bar 7, the frame vertical bar 8, etc.

Claims

1. A construction method for a fully enclosed integral work frame for the maintenance and construction of an operating railway bridge, characterized in that: The following steps are involved: S1. Remove the outermost walking board of the railway bridge sidewalk to expose the surface of the sidewalk angle steel brackets (1) on both sides; S2, laying a longitudinal full-length pipe (4) on each sidewalk angle steel bracket (1); S3, a plurality of suspension rods (5) are respectively hung on the longitudinal through-length tubes (4) on both sides, the plurality of suspension rods (5) are arranged at intervals along the longitudinal direction, and the suspension rods (5) on both sides correspond to each other one by one; S4, connecting the two corresponding suspension rods (5) on the left and right through the beam bottom cross bar (6), the beam bottom cross bar (6) abuts upward against the horseshoe bottom surfaces of the two T beams (2), and is hung on the T beam (2) through a hanging assembly; S5, respectively installing frame cross bars (7) and frame vertical bars (8) on both sides of the railway bridge, so that they cooperate with the suspension rods (5) and the bottom cross bars (6) of the beam, thereby forming a "well"-shaped frame structure on both sides of the railway bridge; S6. Pads (9) are fully laid longitudinally between the upper frames of each "well"-shaped frame structure on each side, and the pads (9) are transversely limited between the hanger (5) and the frame uprights (8), thereby forming working layers on both sides of the railway bridge.

2. The construction method of the all-beam integral work frame for the maintenance and construction of the operating line railway bridge according to claim 1 is characterized by: The hanging assembly comprises a longitudinal connecting pipe (10) arranged in the middle of the beam bottom cross bar (6) and connecting all the beam bottom cross bars (6) together; a plurality of beam middle bars (11) are connected to the longitudinal connecting pipe (10); the plurality of beam middle bars (11) are arranged at intervals in the longitudinal direction; the upper end of each beam middle bar (11) is connected to a beam middle cross bar (12); the beam middle cross bar (12) is clamped between the horseshoes of the two T beams (2).

3. The construction method of the all-beam integral work frame for the maintenance and construction of the operating line railway bridge according to claim 1 is characterized by: A frame cross bar (7) is connected to the middle of each suspension rod (5), and the frame cross bars (7) on both sides are inwardly abutted against the web of the corresponding side T-beam (2). A frame vertical bar (8) is connected to the middle of each frame cross bar (7), and the upper end of the frame vertical bar (8) is abutted against the wing plate of the T-beam (2), and the lower end of the frame vertical bar (8) is connected to the bottom cross bar (6), thereby forming a "well"-shaped frame structure on both sides of the railway bridge.

4. The construction method of the all-beam integral work frame for the maintenance and construction of the operating line railway bridge according to claim 1 is characterized by: An anti-falling net (15) is fully laid along the longitudinal direction between the lower frames of each "well"-shaped frame structure on each side, and the anti-falling net (15) is laterally limited between the suspension rod (5) and the frame upright pole (8), thereby forming an anti-falling layer below the working layer.

5. The construction method of the all-beam integral work frame for the maintenance and construction of the operating line railway bridge according to claim 1 is characterized by: Fence nets (16) are arranged on both sides of the working layer, and the fence nets (16) are fixed on corresponding suspension rods (5) or frame uprights (8).

6. The construction method of the all-beam integral work frame for the maintenance and construction of the operating line railway bridge according to claim 1 is characterized by: The longitudinal full-length tube (4) is a double-jointed steel tube, and a wooden square (14) is provided between the longitudinal full-length tube (4) and the sidewalk angle steel bracket (1).

7. The construction method of the all-beam integral work frame for the maintenance and construction of the operating line railway bridge according to claim 2 is characterized by: The longitudinal through-length tube (4), the beam bottom cross bar (6), the suspension rod (5), the frame cross bar (7), the frame vertical bar (8), the longitudinal connecting tube (10), the beam middle vertical bar (11) and the beam middle cross bar (12) are all steel pipes, and the corresponding two connected steel pipes are connected by steel pipe fasteners.

8. The construction method of the all-beam integral work frame for the maintenance and construction of the operating line railway bridge according to claim 2 is characterized by: The longitudinal connecting pipe (10) is hung on the transverse partition (3) via a door-shaped hanger (13); the door-shaped hanger (13) is hung on the transverse partition (3) in the longitudinal direction; and the bottom of the door-shaped hanger (13) is fixed on the longitudinal connecting pipe (10).

9. The construction method of the all-beam integral work frame for the maintenance and construction of the operating line railway bridge according to claim 1 is characterized by: Before removing the walking board, first lay a full-length auxiliary safety rope at both ends of the railway bridge. The full-length auxiliary safety rope uses a 10.5mm rope. Both ends of the full-length auxiliary safety rope are connected around the bottom of the rail and the joint of the sleepers. When removing the walking board, the workers need to fasten their safety belts and hang the safety belts on the full-length auxiliary safety rope. After the skylight construction is completed, the full-length auxiliary safety rope will be removed.

10. The construction method of the all-beam integral work frame for the maintenance and construction of the operating line railway bridge according to claim 1 is characterized by: On the railway bridge, an operation safety rope is arranged every 4 to 6 meters. Both ends of the operation safety rope are fixed to the corresponding sidewalk angle steel bracket (1). When working at the bottom of the beam, the operator needs to wear a safety belt and hang the safety belt on the operation safety rope.

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