CN109505200B - Reinforcing construction process for railway anti-transverse-movement-free pile line passing through under large-span skew frame structure bridge - Google Patents
Reinforcing construction process for railway anti-transverse-movement-free pile line passing through under large-span skew frame structure bridge Download PDFInfo
- Publication number
- CN109505200B CN109505200B CN201811570921.6A CN201811570921A CN109505200B CN 109505200 B CN109505200 B CN 109505200B CN 201811570921 A CN201811570921 A CN 201811570921A CN 109505200 B CN109505200 B CN 109505200B
- Authority
- CN
- China
- Prior art keywords
- rail
- transverse
- cross beam
- railway
- construction
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Active
Links
Images
Classifications
-
- E—FIXED CONSTRUCTIONS
- E01—CONSTRUCTION OF ROADS, RAILWAYS, OR BRIDGES
- E01B—PERMANENT WAY; PERMANENT-WAY TOOLS; MACHINES FOR MAKING RAILWAYS OF ALL KINDS
- E01B1/00—Ballastway; Other means for supporting the sleepers or the track; Drainage of the ballastway
- E01B1/002—Ballastless track, e.g. concrete slab trackway, or with asphalt layers
- E01B1/005—Ballastless track, e.g. concrete slab trackway, or with asphalt layers with sleeper shoes
Landscapes
- Engineering & Computer Science (AREA)
- Architecture (AREA)
- Civil Engineering (AREA)
- Structural Engineering (AREA)
- Bridges Or Land Bridges (AREA)
Abstract
The invention provides a reinforcing construction process for a railway anti-transverse-moving-free pile line passing through a large-span skew frame structure bridge, and belongs to the technical field of road and bridge construction. The support frame mainly bears the weight of the track and the train transmitted by the line reinforcing cross beam in the jacking process, and is favorable for keeping the stability of the system. In addition, all tool parts are arranged outside the working face, so that the hidden engineering is few, and the quality control and the field maintenance and adjustment are facilitated. Because the anti-transverse moving piles and the crown beams are not required to be preset, the erection of the support frame only occupies extremely short construction time, and can be carried out simultaneously with other work of line reinforcement, the characteristic of long construction period of a cast-in-place reinforced concrete structure is effectively avoided, the influence of intersection with railway construction is reduced, the line reinforcement construction period is shortened, and the construction progress is greatly accelerated. Meanwhile, the original cast-in-situ reinforced concrete structure is replaced by turnover materials such as a disc buckle type bracket and I-shaped steel, and the construction cost is greatly reduced. The process has remarkable economic benefit and construction period benefit and great popularization value.
Description
Technical Field
The invention belongs to the technical field of road and bridge construction, and particularly relates to a reinforcing construction process for a railway anti-transverse-movement-free pile line passing through a large-span skew frame structure bridge.
Background
At present, with the vigorous development of the expressway in China, the intersection of a newly-built expressway and an existing railway line is inevitable, and the construction of the frame bridge jacking through the underpass railway is more and more widely applied. The existing railway needs to be reinforced before jacking construction, and a common method for reinforcing the railway is to adopt an H-shaped steel longitudinal beam matched with an I-shaped steel transverse beam arranged by a transverse lifting and longitudinal picking method, a protective pile, a support pile and an anti-moving pile to form a railway reinforcing system so as to prevent the railway track from moving transversely. The anti-shifting pile is positioned in the jacking and positioning direction, is parallel to the existing line and is arranged in a straight line next to the existing line. The railway rail is reinforced by adopting a longitudinal and transverse steel beam transverse lifting and longitudinal picking method, then the transverse beam is connected with the anti-moving pile, and the longitudinal beam is used for reinforcing the transverse beam.
The core of the mode is to preset the anti-moving pile, but the pile forming period and the construction cost of the anti-moving pile are higher, and after the jacking construction is finished, the anti-moving pile loses the function, so that the anti-moving pile is abandoned, and the resource waste is caused.
Disclosure of Invention
The invention aims to provide a reinforcing construction process for a railway crossing-under large-span oblique crossing frame structure bridge anti-transverse moving pile-free line, which aims to solve the technical problems of prolonged construction period and increased construction cost caused by driving anti-transverse moving piles in the prior art.
In order to achieve the purpose, the invention adopts the technical scheme that: the reinforcing construction process for the railway anti-transverse-moving-free pile line passing through the underside of the large-span oblique crossing frame structure bridge comprises the following steps:
B. setting a hardening working surface on the front side of the rail;
C. erecting a disc buckle type support frame and a top I-shaped steel cross brace on the ground at the front side of the rail;
D. penetrating a cross beam between sleepers of the rail, connecting the front end part of the cross beam with a support frame, and connecting the rear end part of the cross beam with a pulley;
F. connecting the middle part of the cross beam with a rail, connecting the rear end of the cross beam with the front end of the traction equipment, and connecting the rear end of the traction equipment with a frame culvert to be jacked;
G. carrying out jacking construction, driving a traction device along with jacking of the frame culvert to keep the straightness of the rail, observing the transverse moving condition of the rail, and driving the traction device to pull back the rail to recover the straight condition if the transverse moving of the rail exceeds a preset range until one stage of jacking construction is completed;
H. and G, repeating the step G until the jacking construction is completed.
Further, in the construction process for reinforcing the railway anti-transverse-movement-free pile line passing through the railway under the large-span oblique crossing frame structure bridge, the method further comprises the following steps:
A. construction preparation;
E. the longitudinal beams are arranged on the cross beams and are firmly connected;
I. dismantling the longitudinal beam, the traction equipment, the pulley, the cross beam and the support frame;
step a precedes step B, step E is between step D and step F, and step I follows step H.
Further, in the construction process for reinforcing the railway anti-transverse-moving pile line passing through the railway under the large-span oblique crossing frame structure bridge, the support frame comprises: a stent body; the bracket is arranged on the support body and is used for supporting the cross beam; and the limiting frame is arranged on the bracket body, and one side of the limiting frame is used for being abutted against the end part of the cross beam.
Further, in the reinforcing construction process for the railway anti-transverse-moving-free pile line penetrating through the railway under the large-span oblique crossing frame structure bridge, the step of penetrating the cross beam between the sleepers of the railway in the step D specifically comprises the following steps: the front side of the rail is provided with a digging machine abutting limiting frame, the rear side of the rail is provided with another digging machine which abuts against one end of the cross beam to penetrate the cross beam into the lower part of the rail until the front end part of the cross beam contacts with the limiting frame.
Further, in the aforementioned construction technology for reinforcing a railway anti-transverse-movement pile line passing through under a large-span oblique crossing frame structure bridge, the support body includes: the disc buckle bracket is arranged on the working surface; the supporting beam is arranged at the upper part of the disc buckle bracket and is used for connecting the bracket and the limiting frame; the inclined support is arranged on the working surface and is abutted against the other side of the limiting frame; the inclined support is provided with a telescopic mechanism for adjusting the length of the inclined support; the bracket is fixedly connected with the bracket body, and the limiting frame is connected with the bracket through a split bolt.
Further, in the construction process for reinforcing the anti-transverse-movement pile-free line of the long-span obliquely-crossed frame structure bridge underpass railway, in the step G, if the transverse movement of the rail exceeds a preset range, the pulling equipment, the telescopic mechanism and the counter-pulling bolt are adjusted to return the rail to the original position.
Further, in the reinforcing construction process of the railway anti-transverse-movement-free pile line penetrating through the large-span oblique crossing frame structure bridge, the cross beam is provided with a rail limiting part used for being abutted against the side part of the rail.
Further, in the reinforcing construction process for the railway anti-transverse-movement-free pile line penetrating through the large-span oblique crossing frame structure bridge, the step of connecting the middle part of the cross beam with the rail in the step F specifically comprises the following steps: an interlayer is arranged between the cross beam and the rail and is tightly plugged by a wood wedge, and the side part of the rail is tightly clamped by a rail limiting part.
Further, in the reinforcing construction process of the anti-transverse-moving pile-free line of the underpass railway of the large-span oblique crossing frame structure bridge, in the step G, if the transverse movement of the rail is detected to exceed the preset range, and the pulling equipment is driven to pull the rail for the preset time, and the transverse movement of the rail still exceeds the preset range, the jacking construction is suspended, and the pulling equipment is continuously driven to pull the rail back, and then the jacking construction is continued.
Further, in the construction process for reinforcing the railway anti-transverse-movement-free pile line passing through the railway under the large-span oblique crossing frame structure bridge, the drawing equipment comprises: the embedded fixing piece is embedded in the working surface at the rear side of the rail; one end of the pull rope is connected with the cross beam, and the other end of the pull rope is connected with the embedded fixing piece; and the chain block is arranged on the pull rope and is used for tightening the pull rope.
The reinforcing construction process for the railway anti-transverse-movement-free pile line passing through the underside of the large-span oblique crossing frame structure bridge, provided by the invention, has the beneficial effects that: compared with the prior art, the anti-sideslip pile line solidification system is formed by replacing the anti-sideslip piles and the crown beam with the anti-sideslip pile support frame which is a disc buckle type support and a top I-shaped steel support and is more convenient and rapid to construct. And the pulley is auxiliary, and the traction equipment is used for traction in the jacking process, so that the track line is prevented from transversely moving. Because the anti-shifting pile is not required to be preset, the cast-in-place reinforced concrete structure is replaced by the anti-shifting support frame, the characteristic of long construction period of the cast-in-place structure is avoided, the construction crossing time with the railway is shortened, the construction progress is greatly accelerated, and meanwhile, the cast-in-place reinforced concrete structure is replaced by the turnover materials such as the disc buckle type support and the I-shaped steel, and the construction cost is greatly reduced. The support frame mainly receives the gravity of rail and train that the circuit consolidates the crossbeam transmission, is favorable to keeping the stability of system, sets up the coaster moreover again, can reduce the friction, reduces the resistance when advancing the construction for can more conveniently control the sideslip of track circuit in advancing the in-process. In addition, all tool parts are arranged outside the working face, so that the hidden engineering is few, and the quality control and the field maintenance and adjustment are facilitated.
Drawings
In order to more clearly illustrate the technical solutions in the embodiments of the present invention, the drawings needed to be used in the embodiments or the prior art descriptions will be briefly described below, and it is obvious that the drawings in the following description are only some embodiments of the present invention, and it is obvious for those skilled in the art to obtain other drawings based on these drawings without inventive exercise.
Fig. 1 is a schematic top view of a reinforcing system for a long-span skew frame structure bridge underpass railway anti-transverse-movement pile-free line, according to an embodiment of the present invention;
fig. 2 is a schematic structural view of a reinforcing system of a long-span skew frame structure bridge underpass railway anti-transverse-movement-free pile line applied in an embodiment of the invention;
FIG. 3 is an enlarged view of a portion I of FIG. 1;
FIG. 4 is an enlarged view of a portion II of FIG. 2;
FIG. 5 is an enlarged view of a portion of FIG. 1 at III;
FIG. 6 is a schematic view of a part of the enlarged structure at IV in FIG. 2;
FIG. 7 is a schematic side view of the sled portion (bottom and middle split);
fig. 8 is a schematic front view of a reinforcing system for a non-lateral-movement-resistant pile line of a long-span cross-frame structure bridge passing through a railway under a bridge according to another embodiment of the invention;
fig. 9 is a schematic side view of a reinforcing system for a non-lateral-movement-resistant pile line of a long-span cross-frame structure bridge passing through a railway under the bridge according to another embodiment of the invention.
Wherein, in the figures, the respective reference numerals:
10-a stent body;
11-coiling buckle support; 12-a support beam; 13-inclined support; 14-a bracket connection; 15-oil cylinder;
20-a bracket;
30-a limiting frame; 31-a top plate; 32-a first card slot; 33-a plug;
40-a pulling apparatus; 41-pre-burying a fixing piece; 42-a pull rope; 43-chain block;
50-a pulley;
51-a sliding seat; 511-seat body; 512-a rolling wheel; 513-a notch; 514-concave holes; 515-a bump;
52-a support;
53-limiting seat; 531-backplane; 532-limiting plate; 533-a fastener;
60-U-bolt assembly; 61-a second card slot; 62-split bolts;
70-a cross beam; 71-stay cord hole; 72-rail limit stop;
80-longitudinal beams;
90-a working surface; 91-a rail; 92-frame culvert construction; 93-jacking means.
Detailed Description
In order to make the technical problems, technical solutions and advantageous effects to be solved by the present invention more clearly apparent, the present invention is further described in detail below with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are merely illustrative of the invention and are not intended to limit the invention.
Referring to fig. 1 and 2 and fig. 8 and 9 together, a reinforcing system for a large-span skew frame structure bridge underpass railway anti-transverse-movement pile line provided by the invention will now be described. The railway anti-transverse-movement-free pile line reinforcing system for the long-span skew frame structure bridge passing through the railway comprises a cross beam 70, a supporting frame and a reinforcing frame, wherein the cross beam 70 is used for penetrating between sleepers of a rail 91 and supporting the rail 91; a bracket body 10 provided at one end of the cross beam 70; a bracket 20 disposed on the support body 10 and supporting the beam 70; a limiting frame 30 which is arranged on the bracket body 10, and one side of the limiting frame 30 is used for being abutted against the end part of the cross beam 70; a pulling device 40 connected to the other end of the beam 70 and configured to pull the beam 70; and a trolley 50 connected to the other end of the cross beam 70 (i.e., the end away from the bracket body 10) and adapted to slide on the working surface 90.
Compared with the prior art, the anti-transverse-movement-free pile line reinforcing system for the long-span cross-frame structure bridge underpass railway provided by the invention has the advantages that the traditional anti-transverse-movement pile is replaced by the arrangement of the support body 10, the bracket 20, the limiting frame 30, the traction equipment 40 and the pulley 50, the transverse movement of the track line can be avoided by the jacking action of the limiting frame 30 and the traction action of the traction equipment 40 during jacking construction, the anti-transverse-movement pile does not need to be preset, the cast-in-situ reinforced concrete structure is replaced by the anti-transverse-movement-free support frame, the characteristic of long construction period of the cast-in-situ structure is avoided, the construction crossing time with the railway is shortened, the construction progress is greatly accelerated, meanwhile, the cast-in-situ reinforced concrete structure is replaced by turnover materials such as a disc support, I. The support frame mainly receives the gravity of rail and train that the circuit strengthened crossbeam transmitted, is favorable to keeping the stability of system, sets up coaster 50 again moreover, can reduce the friction, reduces the resistance when advancing the construction for can more conveniently control the sideslip of track circuit in advancing the in-process. In addition, all tool parts are arranged outside the working face, so that the hidden engineering is few, and the quality control and the field maintenance and adjustment are facilitated.
The invention forms a reinforcing construction system for the anti-sideslip-free pile line by adopting a coiled buckle type support and a top cross brace of the anti-sideslip-free pile support frame which is more convenient and rapid in construction. Specifically, exempt from anti sideslip stake circuit to consolidate, specifically refer to and get rid of anti sideslip stake and crown beam, replace and set up in original position and exempt from anti sideslip stake support frame "dish knot formula support + top I-steel stull", the pre-buried spacing pull ring of frame structure top afterbody, at the in-process tractive circuit of advancing in the top, avoid the track to take place the sideslip, the coaster is supplementary simultaneously, reduces the friction on frame structure top, reduces the resistance of advancing in the top.
Further, referring to fig. 1, fig. 3 and fig. 5 together, as an embodiment of the line strengthening system for the anti-sideslip pile of the long-span cross-frame structure bridge underpass railway provided by the present invention, the pulling device 40 includes: the pull chain type combined lifting device comprises an embedded fixing piece 41 embedded on a working surface 90, a pull rope 42 with one end connected with a cross beam 70 and the other end connected with the embedded fixing piece 41, and a chain block 43 arranged on the pull rope 42 and used for tightening the pull rope 42.
Further, referring to fig. 1, fig. 3 and fig. 5 together, as a specific embodiment of the line strengthening system for the anti-sideslip pile of the long-span skew-frame structure bridge underpass railway provided by the present invention, one end of the cross beam 70 is provided with a pull rope hole 71 for connecting with the pull rope 42, and the periphery of the pull rope hole 71 is provided with a reinforcing plate.
Further, referring to fig. 1 and fig. 2 together, as an embodiment of the line strengthening system of the large-span skew-framed structure bridge underpass railway without anti-lateral-movement piles, a rail limiting member 72 is disposed on the cross beam 70, and the rail limiting member 72 abuts against a side portion of the rail 91, so as to facilitate pushing the rail 91 to move by the cross beam 70. Spacers such as battens may be provided between the rail stoppers 72 and the rails 91.
Referring to fig. 1, 2 and 5 to 7 together, an auxiliary jacking trolley (i.e., a trolley 50) for reinforcing a downward-crossing railway jacking construction line according to the present invention will now be described. The auxiliary jacking trolley for reinforcing the underpass railway jacking construction line comprises a sliding seat 51 used for sliding on a working surface 90 and a supporting body 52 arranged on the sliding seat 51 and used for being connected with one end of a cross beam 70.
Compared with the prior art, the auxiliary jacking jigger for reinforcing the jacking construction line of the underpass railway has the advantages that the cross beam 80 is supported by the support body 52, so that the cross beam 80 and the rail 91 are separated from the lower frame structure, one end of the cross beam 80 can slide by utilizing the sliding seat 51, sliding friction is replaced by rolling friction, friction among the cross beam, the rail and the lower frame structure culvert or soil body can be reduced, and other construction operations such as traction and the like are facilitated.
Further, referring to fig. 5 to 7 together, as an embodiment of the reinforced auxiliary jacking trolley for the jacking construction line of the underpass railway provided by the present invention, the sliding seat 51 comprises: the seat body 511 is used for connecting with the support body 52 and is internally provided with a cavity; and a rolling wheel 512 which is rotatably arranged in the cavity and protrudes out of the lower part of the seat body 511 for rolling on the working surface 90.
Further, referring to fig. 6 and 7 together, as an embodiment of the auxiliary jacking trolley for reinforcing the jacking construction line of the underpass railway, a plurality of rolling wheels 512 are arranged in the cavity and are parallel to each other.
Further, referring to fig. 7, as a specific embodiment of the reinforcing auxiliary jacking trolley for the downward-through railway jacking construction line provided by the invention, a notch 513 is arranged on a side wall of the cavity in a direction perpendicular to a rotating shaft of the rolling wheel 512.
Further, referring to fig. 7, as a specific embodiment of the reinforced auxiliary jacking trolley for the jacking construction line of the underpass railway provided by the present invention, a height adjusting mechanism for adjusting the height of the supporting body 52 is provided on the supporting body 52. The support 52 comprises a jack or a plurality of sequentially stacked blocks.
Further, referring to fig. 6 and 7 together, as an embodiment of the auxiliary jacking trolley for reinforcing the jacking construction line of the underpass railway, a sliding seat 51 is rotatably connected with a supporting body 52. Specifically, the sliding seat 51 is provided with a concave hole 514, and the supporting body 52 is provided with a protrusion 515 for placing in the concave hole.
Further, referring to fig. 1, fig. 2 and fig. 5 to fig. 7 together, as an embodiment of the reinforced auxiliary jacking trolley for the downward-crossing railway jacking construction line provided by the present invention, the reinforced auxiliary jacking trolley further comprises: and a limiting seat 53 arranged on the support body 52 and used for limiting and connecting with one end part of the cross beam 70.
Further, referring to fig. 5 to 7 together, as an embodiment of the reinforced auxiliary jacking trolley for the jacking construction line of the underpass railway provided by the present invention, the limiting seat 53 includes: a bottom plate 531, the lower part of which is used for connecting with the supporting body 52 and the upper part of which is used for supporting the beam 70; and a limit plate 532 disposed at a position corresponding to both sides of the cross beam 70 on the bottom plate 531 for limiting the cross beam 70.
Further, referring to fig. 5 to 7 together, as an embodiment of the reinforced auxiliary jacking trolley for the jacking construction line of the underpass railway provided by the present invention, the limiting seat 53 further includes: and a fastener 533 disposed on the limiting plate 532 and configured to tightly support the beam 70.
Further, referring to fig. 5 to 7 together, as an embodiment of the reinforcing system for a line of a crossing-over railway anti-transverse-movement-free pile under a large-span skew frame structure bridge provided by the present invention, the limiting seat 53 includes: a bottom plate 531, the lower part of which is used for connecting with the supporting body 52 and the upper part of which is used for supporting the beam 70; the limiting plates 532 are arranged on the bottom plate 531 at positions corresponding to the two sides of the cross beam 70 and used for limiting the cross beam 70; and a fastening member 533 provided on the stopper plate 532 and configured to abut against the cross member 70.
Referring to fig. 1 to 4 together, a fastening type support frame (i.e., a support frame) for reinforcing a coil of a circuit of a frame bridge of a run-through railway according to the present invention will now be described. Underpass railway frame structure bridge circuit reinforcing dish knot formula support frame, including the stake body, set up on the stake body and be used for the bracket of bearing crossbeam and set up on the stake body and spacing frame that spacing frame one side was used for with the butt of crossbeam tip.
According to the reinforcing disc buckle type support frame for the underpass railway frame bridge circuit, the support body, the bracket and the limiting frame are matched, so that the cross beam 70 can be directly abutted against the limiting frame in the inserting process and the jacking construction process of the cross beam 70, when a single cross beam 70 is subjected to a large jacking force, the jacking force can be transmitted to the whole support body through the limiting frame, the whole support body is utilized to resist shearing force, and the support frame is prevented from collapsing due to local deformation.
Further, referring to fig. 1 to 4 together, as a specific embodiment of the fastening type support frame for reinforcing the coil of the underpass railway frame bridge circuit provided by the present invention, a top plate 31 is disposed on the limiting frame 30, and a first clamping groove 32 for clamping with the cross beam 70 is disposed on the top plate.
Further, referring to fig. 1 to 4 together, as an embodiment of the fastening type support frame for reinforcing the coil of the underpass railway frame bridge circuit provided by the present invention, the bracket 20 and/or the limiting frame 30 are provided with U-bolt assemblies 60 for connecting with the cross beam 70. The longitudinal beams 80 and the cross beams 70 can also be connected by the U-shaped bolt assemblies 60.
Further, referring to fig. 3, as a specific embodiment of the fastening type support frame for reinforcing the coil of the underpass railway frame bridge circuit provided by the present invention, the bracket 20 and/or the limiting frame 30 are provided with a second locking groove 61 for locking with the U-bolt assembly 60.
Further, referring to fig. 1 to 4 together, as an embodiment of the buckle type support frame for reinforcing the disk of the underpass railway frame bridge circuit provided by the present invention, the support frame body includes: the disc buckle bracket 11 is arranged on the working surface 90; the supporting beam 12 is arranged at the upper part of the disc buckle bracket 11 and is used for being connected with the bracket 20 and the limiting frame 30; and the inclined support 13 is arranged on the working surface and is abutted against the other side of the limiting frame 30. The support beam 12 is perpendicular to the cross beam 70, and the bracket 20 and the limiting frame 30 are both perpendicular to the support beam 12.
Further, referring to fig. 2, as a specific embodiment of the reinforcing disc buckle type support frame for the underpass railway frame bridge line provided by the present invention, a telescopic mechanism for adjusting the length of the inclined strut 13 is disposed on the inclined strut 13. Specifically, the telescopic mechanism may include an oil cylinder 15 provided on the diagonal support 13.
Further, referring to fig. 1 to fig. 4 together, as a specific embodiment of the fastening disc type supporting frame for the underpass railway frame bridge circuit provided by the present invention, the inclined support 13 is provided with a jack, and the limiting frame 30 is provided with a plug 33 for plugging with the jack.
Further, referring to fig. 1 to 4 together, as an embodiment of the buckle type support frame for reinforcing the disc of the underpass railway frame bridge circuit provided by the present invention, the support body further includes: and the bracket connecting piece 14 is embedded in the hardened working surface 90 and is used for being connected with the disc buckle bracket 11 and the inclined support 13. The bracket coupler may be an anchor bolt.
Further, referring to fig. 1 to 4 together, as an embodiment of the fastening type support frame for reinforcing the coil of the underpass railway frame bridge circuit provided by the present invention, the bracket 20 is fixedly connected with the support body 10, and the limiting frame 30 is connected with the bracket 20 through the split bolt 62.
Referring to fig. 1 and fig. 2 together, a reinforcing construction process of a non-anti-transverse-movement pile line of a long-span cross frame structure bridge passing through a railway under a bridge provided by the invention will be described. The construction process for reinforcing the railway anti-transverse-movement-free pile line passing through the railway under the large-span oblique crossing frame structure bridge comprises the following steps:
B. a hardening working surface 90 is arranged on the front side of the rail 91;
C. erecting a support frame on a working surface 90 at the front side of a rail 91;
D. a cross beam 70 penetrates between the sleepers of the rail 91, the front end part of the cross beam 70 is connected with the support frame, and the rear end part is connected with the pulley 50;
F. connecting the middle part of the cross beam 70 with a rail 91, connecting the rear end of the cross beam 70 with the front end of the traction equipment 40, and connecting the rear end of the traction equipment 40 with a frame culvert 92 to be jacked;
G. carrying out jacking construction, driving the traction equipment 40 along with jacking of the frame culvert 92 to keep the rail 91 straight, synchronously observing the transverse movement condition of the rail 91, and driving the traction equipment 40 to pull back the rail 91 if the transverse movement of the rail 91 exceeds a preset range until one stage of jacking construction is finished;
H. and G, repeating the step G until the jacking construction is completed. Forward in the direction of jacking.
Compared with the prior art, the construction process for reinforcing the railway line without the anti-transverse-movement piles of the long-span obliquely-crossed frame structure bridge underpass railway provided by the invention has the advantages that the anti-transverse-movement piles are replaced by the supporting frames which are more convenient to construct, and the transverse movement of the track line is avoided in jacking construction by matching with the traction of the pulley 50 and the traction equipment 40. Because the anti-transverse moving pile and the crown beam are not required to be preset, the characteristic of long construction period of the cast-in-place reinforced concrete structure is avoided, the erection of the support frame, the arrangement of the tool parts such as the pulley 50 and the traction equipment 40 only occupy extremely short time, the construction can be carried out simultaneously with other work of line reinforcement, the construction period is greatly shortened, and the construction cost is reduced. Meanwhile, the support frame is mainly subjected to the gravity of the rail 91 and the train transmitted by the cross beam 70, so that the stability of the system is kept, and the auxiliary pulley 50 is arranged, so that the friction can be reduced, the resistance in jacking construction can be reduced, and the transverse movement of the track line can be controlled more conveniently in the jacking process. In addition, all tool parts are arranged outside the working face, so that the hidden engineering is few, and the quality control and the field maintenance and adjustment are facilitated.
Further, as a specific implementation manner of the reinforcing construction process for the railway anti-transverse-moving-free pile line under the large-span oblique crossing frame structure bridge provided by the invention, the reinforcing construction process further comprises the following steps:
A. construction preparation;
E. the longitudinal beams 80 are arranged on the cross beams 70 and are firmly connected;
I. dismantling the longitudinal beam 80, the traction equipment 40, the pulley 50, the cross beam 70 and the support frame;
step a precedes step B, step E is between step D and step F, and step I follows step H.
Further, as a specific implementation manner of the reinforcing construction process of the railway anti-transverse-moving-free pile line under the large-span oblique crossing frame structure bridge provided by the invention, the support frame comprises: a stent body 10; a bracket 20 disposed on the support body 10 and supporting the beam 70; and a stopper 30 provided on the holder body 10 and having one side of the stopper 30 abutting against the end of the cross beam 70. The step of "penetrating the cross beam 70 between the sleepers of the rail 91" in the step D specifically includes: a digging machine is arranged at the front side of the rail 91 to tightly push the limiting frame 30, another digging machine is arranged at the rear side of the rail 91 to push one end of the beam 70 to penetrate the beam 70 into the lower part of the rail 91 until the end part of the beam 70 is contacted with the limiting frame 30.
Further, as a specific implementation manner of the reinforcing construction process of the railway anti-transverse-movement-free pile line under the large-span oblique crossing frame structure bridge provided by the invention, the support body comprises: the disc buckle bracket 11 is arranged on the working surface 90; the supporting beam 12 is arranged at the upper part of the disc buckle bracket 11 and is used for being connected with the bracket 20 and the limiting frame 30; the inclined support 13 is arranged on the working surface and is abutted against the other side of the limiting frame 30; the inclined support 13 is provided with a telescopic mechanism for adjusting the length of the inclined support 13; the bracket 20 is fixedly connected with the bracket body 10, and the limiting frame 30 is connected with the bracket 20 through a split bolt 62. In step G, if the rail 91 has traversed beyond the predetermined range, the pulling device 40, the telescopic mechanism and the split bolt 62 are adjusted to return the rail 91 to the original position.
Further, as a specific embodiment of the reinforcing construction process of the anti-transverse-moving pile-free line of the long-span skew frame structure bridge underpass railway provided by the invention, the cross beam 70 is provided with a rail limiting piece 72 for abutting against the side of the rail 91. In step F, "connecting the middle of the cross beam 70 with the rail 91" specifically includes: a partition layer is arranged between the cross beam 70 and the rail 91 and is tightly plugged by a wooden wedge, and the side part of the rail 91 is clamped by the rail limiting part 72.
Further, as a specific implementation manner of the reinforcing construction process of the anti-transverse-moving pile-free line of the long-span cross frame structure bridge underpass railway, in the step G, if the transverse movement of the rail 91 is observed to exceed the predetermined range, the driving of the pulling device 40 to pull the rail 91 is accelerated, and when the sign that the transverse movement of the rail 91 is not recovered is found, the jacking construction is suspended, the pulling device 40 is continuously driven to pull back the rail 91, and the jacking construction is continued.
Specifically, a specific embodiment of the reinforcing construction process for the anti-transverse-moving pile-free line of the long-span obliquely-crossed frame structure bridge underpass railway provided by the invention is as follows.
Construction preparation:
1. the prefabrication and maintenance of the frame culvert are finished, and the strength reaches the design requirement; pile foundation engineering such as protective piles, supporting piles and the like is completed; after the grouting reinforcement construction of the roadbed is finished, the bearing capacity meets the requirement through inspection.
2. The optical cable and the electric cable are manually detected, and the moving and the transformation or the pipe penetration protection are completed. An obvious safety signboard is arranged. The safety protection work is in place.
3. The method has the advantages that railway conditions, track gauges, tie spacings, traffic flow, cargo carrying capacity, busy hours and idle hours and the like are fully investigated, a line strengthening scheme and strengthening time are determined, and the method is fully communicated with railway departments to reach a consensus.
4. The line reinforcement material, machinery, personnel are in place. The safety and the technology are handed over on site. And (4) carrying out compliance inspection and acceptance inspection after materials such as longitudinal beams, transverse beams, coil buckle type steel pipe frames and the like used for reinforcing the lines enter the field, and detecting to be qualified.
And (3) penetrating and arranging transverse I-shaped steel:
1. the cross beams 70 are I45 (B-shaped) I-shaped steel and are arranged perpendicular to the line direction, the space between existing line concrete sleepers is 0.6m, the cross beams 70 are inserted between the existing sleepers, and the insertion of the cross beams 70 adopts a 'six-space-one-insertion method' for circular insertion. The cross beam 70 is arranged at intervals of 5-0-5 inside the frame structure (5 inserted with one hole), and arranged at intervals of 2-0-2 outside the frame structure (2 inserted with one hole). The I-steel joints are arranged in a splint shape by adopting two steel plates with the thickness of 20mm, the M20mm high-strength bolts are connected, the joints are arranged in a staggered way, and the joints are prevented from being positioned under the track.
2. Supporting points of the frame inner beam 70: the in-place end is supported on the I-shaped steel at the top of the steel pipe bracket, and the jacking end is supported on the top surface of the frame structure and supported by a pulley and a wood base plate; supporting points of the frame structure outer beam 70: and the support is supported on the crown beams of the line protection piles at the two sides.
3. The penetration of the I-steel is carried out simultaneously in two groups from two ends of the line, the manual grooving of the existing sleepers by adopting a 'six-insertion-one-spacing method' is adopted, and then the insertion is assisted by a crane and manual work. The groove bottom is arranged at the outer side below the track, short sleepers are buried in the groove bottom, transverse I-shaped steel is supported, the I-shaped steel and the track are separated by a bamboo plywood and are tightly tied by wood wedges. And (3) inserting one I-shaped steel, returning the ballast in time, tamping tightly, and performing the penetrating construction of the next I-shaped steel. The outside of the track is provided with a short square wood and angle steel limiting device.
Erecting longitudinal beam I-shaped steel:
in order to increase rigidity and stability, 2 long longitudinal beams are arranged on two side road shoulders, wherein each beam of the two side road shoulders is composed of 2 XHN 900 X300 X16 X28 steel longitudinal beams. Joints in each longitudinal beam are arranged in a staggered mode, the I-steel joints are arranged in a splint mode by two 32mm thick steel plates, and are connected by M30mm high-strength bolts. The longitudinal beam is arranged on the cross beam 70 and is lifted by a crane and positioned in place by manual matching, the longitudinal beam and the cross beam 70 are connected by a U-shaped card, and the two ends and the middle of the longitudinal beam are supported by sleeper piles at intervals.
The transverse movement resistance of the line:
1. the anti-moving pile and the crown beam at the position end of the line are eliminated, and the coil buckle type steel pipe frame and the top I-shaped steel are replaced. One end of the line reinforcing beam 70 is lapped on the top surface of the frame structure, and the other end is lapped on the I-shaped steel on the top of the steel pipe frame. The disc buckle type steel pipe frame and the top I-shaped steel are subjected to diagonal bracing reinforcement, and a circuit supporting effect is achieved.
2. And (5) hardening the concrete of the bracket substrate. The support is erected, 6 rows of support bodies are transversely arranged, the longitudinal length is consistent with the reinforcing width of the line, the transverse and longitudinal intervals are 0.6m, the height is calculated downwards by transverse I-shaped steel, the height of the frame body is obtained by deducting the height of the I-shaped steel, and the cloth distance is 1.2 m.
3. The top of the bracket is firstly provided with 15H-shaped steel one by one in the bracket jacking along the jacking direction according to the transverse interval of 0.6m of the bracket. The top surfaces of the 15I-beams are provided with 45b I-beams in a straight line shape along the line direction, the two rows are arranged in the front and the back, and the height dislocation is made into an L shape.
4. After the i-beam is installed, the line-reinforcing cross beam 70 is fixed to the crown beam. And each intersection point of the transverse I-shaped steel and the crown beam I-shaped steel is respectively connected and fixed by two U-shaped cards. The gap of the backing plate on the top surface of the U-shaped card is tightly inserted by a wood plate. When the crown beam I-steel is pushed in, a specially-assigned person observes the straightening condition of the crown beam I-steel, and the tightness of the joint is checked and reinforced. And (5) finding the abnormality, and timely processing or suspending jacking.
5. And anchoring steel bar pull rings are arranged at the tail part of the frame top plate every 3 m, 5-ton chain blocks are uniformly adopted, 20 steel wire ropes are used for tensioning a line reinforcing system, and a command and a special person command are uniformly carried out during jacking, and the line is tensioned along with jacking. In order to reduce the friction between the frame culvert and the cross beam 70, a pulley 50 is placed between the cross beam 70 and the top plate of the frame culvert.
Trial jacking inspection:
after the cross beam 70 and the longitudinal beam are installed, the steel pipe bracket and the top I-shaped steel are installed, the two ends of the line reinforcing cross beam 70 are firmly supported, the pull ring line is tensioned, an operator is in place, and trial jacking is carried out after all the parts are ready. And (3) while jacking, dispatching a specially-assigned person to observe the straightening condition of the track and the straightening condition of the I-shaped steel at the top of the bracket in the whole process, and commanding the rear part to accelerate or decelerate the tensioning speed of the individual hoist. When the phenomenon that the individual points of the line slightly deform towards the direction of the jacking front end is found, the tensioning speed of the point hoist cannot meet the requirement of the anti-transverse movement of the line, and the tensioning speed needs to be increased. In the whole process, a specially-assigned person commands to ensure that the line is straight by adjusting the tensioning speed of the individual chain block. When the adjustment speed is found, the bending deformation does not have a reduction trend, the interphone is required to be busy to inform the jacking construction background to suspend jacking, the reason is found, and the interphone is jacked again. When the vehicle comes, the vehicle is temporarily jacked in, a worker goes to avoid the vehicle, and the lower support of the cross beam 70 is tightly tied by a wood wedge. At the end of each jacking stroke, the transverse and longitudinal beams and the bracket parts are checked to ensure that the transverse and longitudinal beams do not bend and deform and work normally.
The above description is only for the purpose of illustrating the preferred embodiments of the present invention and is not to be construed as limiting the invention, and any modifications, equivalents and improvements made within the spirit and principle of the present invention are intended to be included within the scope of the present invention.
Claims (9)
1. A construction process for reinforcing a railway anti-transverse-movement-free pile line passing through a railway under a large-span oblique crossing frame structure bridge is characterized by comprising the following steps:
B. setting a hardening working surface on the front side of the rail;
C. erecting a transverse movement-free support frame on a working surface at the front side of the rail;
D. penetrating a cross beam between sleepers of the rail, connecting the front end part of the cross beam with the support frame, and connecting the rear end part of the cross beam with a pulley;
F. connecting the middle part of the cross beam with the rail, connecting the rear end of the cross beam with the front end of the traction equipment, and connecting the rear end of the traction equipment with a frame culvert to be jacked;
G. carrying out jacking construction, driving the traction equipment along with jacking of the frame culvert so as to keep the railway straight, observing the straight condition of the railway, and commanding the traction equipment to tighten the line along with jacking;
H. repeating the step G until the jacking construction is completed;
the support frame includes:
a stent body;
the bracket is arranged on the support body and is used for supporting the cross beam; and
the limiting frame is arranged on the support body, and one side of the limiting frame is used for being abutted against the end part of the cross beam;
the stent body includes:
the disc buckle bracket is arranged on the working surface;
the supporting beam is arranged at the upper part of the disc buckle support and is used for being connected with the bracket and the limiting frame; and
and the inclined support is arranged on the working surface and is abutted against the other side of the limiting frame.
2. The reinforcing construction process of the underpass railway anti-transverse-moving pile-free line of the large-span oblique crossing frame structure bridge as claimed in claim 1, further comprising the following steps:
A. construction preparation;
E. the longitudinal beams are arranged on the cross beams and are firmly connected;
I. dismantling the longitudinal beam, the traction equipment, the pulley, the cross beam and the support frame;
said step a is before said step B, said step E is between said step D and said step F, and said step I is after said step H.
3. The reinforcing construction process for the underpass railway anti-transverse-moving pile-free line of the large-span oblique crossing frame structure bridge as claimed in claim 1, wherein the step of penetrating the cross beam between the sleepers of the rail in the step D specifically comprises the following steps:
and arranging one excavator on the front side of the rail to tightly push the limiting frame, arranging another excavator on the rear side of the rail to push one end of the cross beam to penetrate the cross beam into the lower part of the rail until the front end part of the cross beam is contacted with the limiting frame.
4. The reinforcing construction process for the railway anti-transverse-moving pile-free line under the large-span oblique crossing frame structure bridge as claimed in claim 1, wherein a telescopic mechanism for adjusting the length of the oblique support is arranged on the oblique support; the bracket is fixedly connected with the bracket body, and the limiting frame is connected with the bracket through a split bolt.
5. The reinforcing construction process of the railway under-passing anti-transverse-moving pile line of the large-span oblique crossing frame structure bridge as claimed in claim 4, characterized in that: and G, if the transverse movement of the rail exceeds a preset range, adjusting the traction equipment, the telescopic mechanism and the split bolt to return the rail to the original position.
6. The reinforcing construction process of the underpass railway anti-transverse-moving pile line of the large-span oblique crossing frame structure bridge as claimed in claim 1, characterized in that: and the cross beam is provided with a rail limiting part which is used for being abutted against the side part of the rail.
7. The reinforcing construction process of the underpass railway anti-transverse-moving pile-free line of the large-span oblique crossing frame structure bridge as claimed in claim 6, wherein the step of connecting the middle part of the cross beam with the rail in the step F specifically comprises the following steps:
and a partition layer is arranged between the cross beam and the rail, and is tightly plugged by a wood wedge, and the side part of the rail is clamped by the rail limiting part.
8. The reinforcing construction process of the underpass railway anti-transverse-moving pile line of the large-span oblique crossing frame structure bridge as claimed in claim 1, characterized in that: and G, if the situation that the transverse movement of the rail exceeds the preset range is detected, the traction of the traction equipment on the rail is accelerated, and after the preset time, the transverse movement of the rail still exceeds the preset range, the jacking construction is suspended, the traction equipment is continuously driven to pull back the rail, and the jacking construction is continued.
9. The reinforcing construction process for the underpass railway anti-transverse-moving pile line of the large-span oblique crossing frame structure bridge as claimed in claim 1, wherein the pulling equipment comprises:
the embedded fixing piece is embedded in the working surface at the rear side of the rail;
one end of the pull rope is connected with the cross beam, and the other end of the pull rope is connected with the embedded fixing piece; and
and the chain block is arranged on the pull rope and is used for tightening the pull rope.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201811570921.6A CN109505200B (en) | 2018-12-21 | 2018-12-21 | Reinforcing construction process for railway anti-transverse-movement-free pile line passing through under large-span skew frame structure bridge |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201811570921.6A CN109505200B (en) | 2018-12-21 | 2018-12-21 | Reinforcing construction process for railway anti-transverse-movement-free pile line passing through under large-span skew frame structure bridge |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN109505200A CN109505200A (en) | 2019-03-22 |
| CN109505200B true CN109505200B (en) | 2020-10-09 |
Family
ID=65754234
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201811570921.6A Active CN109505200B (en) | 2018-12-21 | 2018-12-21 | Reinforcing construction process for railway anti-transverse-movement-free pile line passing through under large-span skew frame structure bridge |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN109505200B (en) |
Families Citing this family (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110939065B (en) * | 2019-12-05 | 2021-12-17 | 中铁二十二局哈尔滨铁路建设集团有限责任公司 | Method for jacking bridge by using temporary steel support auxiliary frame |
| CN111576111A (en) * | 2020-05-29 | 2020-08-25 | 中铁六局集团有限公司 | Frame bridge jacking railway turnout reinforcement construction method |
| CN114318979B (en) * | 2021-12-31 | 2023-08-18 | 中铁六局集团石家庄铁路建设有限公司 | Automatic penetrating and pulling system and method for frame bridge jacking line reinforcement I-steel |
Family Cites Families (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| IT1226391B (en) * | 1988-07-12 | 1991-01-15 | Impresa Costruzioni Falciola A | Procedure for creating underpasses, particularly in road and rail embankments, as well as monoliths for its implementation |
| CN1210180A (en) * | 1997-08-29 | 1999-03-10 | 张强 | Method for lines for railway prefabricated bridges and culverts |
| CN103726451B (en) * | 2014-01-16 | 2015-10-07 | 中铁六局集团有限公司 | A kind of existing railway tears the construction method of beam bridge original position jacking framed bridge open |
| CN106567345A (en) * | 2015-10-09 | 2017-04-19 | 中铁十八局集团第四工程有限公司 | Jacking construction method for shallow-buried long-span oblique-crossing frame-shaped culvert of existing railway |
-
2018
- 2018-12-21 CN CN201811570921.6A patent/CN109505200B/en active Active
Also Published As
| Publication number | Publication date |
|---|---|
| CN109505200A (en) | 2019-03-22 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN109505200B (en) | Reinforcing construction process for railway anti-transverse-movement-free pile line passing through under large-span skew frame structure bridge | |
| CN100441779C (en) | Space-precasting translation-emplacing method for bridge construction | |
| CN101265690B (en) | Method for dismantling arch bridge for protection | |
| CN102979041B (en) | Soft overhead reinforcing jacking method for construction of span box bridge of jacking block of underpass turnout group of railway | |
| CN102758387B (en) | Reinforcing construction method for H-shaped steel line | |
| CN107620261B (en) | Based on the horizontal existing railway track reinforcement means for holding formula just beam | |
| CN111676819A (en) | Jacking construction method for combined type temporary beam continuous reinforced line large-span frame structure bridge | |
| CN111764286B (en) | Frame bridge jacking construction method | |
| CN105239510A (en) | Dismounting beam support used for high pier small-radius curve cast-in-situ box beam and construction method | |
| CN112267369A (en) | Non-span upright post steel trestle structure, pushing installation device and construction method | |
| CN111576111A (en) | Frame bridge jacking railway turnout reinforcement construction method | |
| CN108517795A (en) | Railroad bridge protecting canopy frame structure and its construction method | |
| CN209537958U (en) | Undercrossing tunnel jacking construction track strengthening assists jacking jigger | |
| CN110029653B (en) | Method for treating steel pipe pile foundation of riprap seabed foundation | |
| CN103590839B (en) | Subway station cast-in-place structural portal support construction technology | |
| CN214573260U (en) | Interim river steel landing stage of striding of construction | |
| CN209537947U (en) | Large-span oblique crossing Frame Bridge undercrossing tunnel exempts to resist traversing anchoring wire road hardened system | |
| CN218712202U (en) | Device for placing middle cross beam on tie beam of tied arch bridge | |
| CN112144418A (en) | Rapid construction method of small and medium span assembled I-shaped beam bridge | |
| CN113565522B (en) | Tunnel Boring Machine (TBM) station-passing bracket between mountain tunnels and station-passing method | |
| NL9201777A (en) | Elevated train track and method for its construction | |
| CN209537948U (en) | A kind of undercrossing tunnel frame core-tube system track strengthening disk button support frame | |
| CN211006761U (en) | Mounting structure of circulating water pipe | |
| CN219361836U (en) | Movable storage bracket for reinforcement cage | |
| CN217517597U (en) | Compound supporting construction of deep basal pit |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PB01 | Publication | ||
| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| GR01 | Patent grant | ||
| GR01 | Patent grant |