CN115094752A - Linear box-shaped bridge curve rail groove structure and manufacturing method thereof - Google Patents
Linear box-shaped bridge curve rail groove structure and manufacturing method thereof Download PDFInfo
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- CN115094752A CN115094752A CN202210878748.6A CN202210878748A CN115094752A CN 115094752 A CN115094752 A CN 115094752A CN 202210878748 A CN202210878748 A CN 202210878748A CN 115094752 A CN115094752 A CN 115094752A
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- 238000004519 manufacturing process Methods 0.000 title claims abstract description 24
- 229910000831 Steel Inorganic materials 0.000 claims abstract description 87
- 239000010959 steel Substances 0.000 claims abstract description 87
- 238000000034 method Methods 0.000 claims abstract description 10
- 238000005096 rolling process Methods 0.000 claims description 14
- 239000000725 suspension Substances 0.000 claims description 14
- 230000005540 biological transmission Effects 0.000 claims description 9
- 239000012528 membrane Substances 0.000 claims description 8
- 239000004567 concrete Substances 0.000 claims description 6
- 230000009471 action Effects 0.000 claims description 4
- 230000036541 health Effects 0.000 claims description 4
- 230000000149 penetrating effect Effects 0.000 claims description 4
- 238000007789 sealing Methods 0.000 claims description 4
- 238000003860 storage Methods 0.000 claims description 4
- 238000012546 transfer Methods 0.000 claims description 4
- 230000000712 assembly Effects 0.000 claims description 3
- 238000000429 assembly Methods 0.000 claims description 3
- 238000009499 grossing Methods 0.000 claims description 3
- 230000002787 reinforcement Effects 0.000 claims description 3
- 238000006073 displacement reaction Methods 0.000 abstract description 2
- 238000013461 design Methods 0.000 description 11
- 238000010276 construction Methods 0.000 description 8
- 238000009415 formwork Methods 0.000 description 8
- 239000011513 prestressed concrete Substances 0.000 description 3
- 244000208734 Pisonia aculeata Species 0.000 description 2
- 238000010586 diagram Methods 0.000 description 2
- 238000002360 preparation method Methods 0.000 description 2
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000002146 bilateral effect Effects 0.000 description 1
- 238000012423 maintenance Methods 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000004321 preservation Methods 0.000 description 1
- 230000008569 process Effects 0.000 description 1
- 230000000750 progressive effect Effects 0.000 description 1
- 238000005507 spraying Methods 0.000 description 1
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 1
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- E—FIXED CONSTRUCTIONS
- E01—CONSTRUCTION OF ROADS, RAILWAYS, OR BRIDGES
- E01D—CONSTRUCTION OF BRIDGES, ELEVATED ROADWAYS OR VIADUCTS; ASSEMBLY OF BRIDGES
- E01D19/00—Structural or constructional details of bridges
- E01D19/12—Grating or flooring for bridges; Fastening railway sleepers or tracks to bridges
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- E—FIXED CONSTRUCTIONS
- E01—CONSTRUCTION OF ROADS, RAILWAYS, OR BRIDGES
- E01D—CONSTRUCTION OF BRIDGES, ELEVATED ROADWAYS OR VIADUCTS; ASSEMBLY OF BRIDGES
- E01D2/00—Bridges characterised by the cross-section of their bearing spanning structure
- E01D2/04—Bridges characterised by the cross-section of their bearing spanning structure of the box-girder type
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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
- E01D21/00—Methods or apparatus specially adapted for erecting or assembling bridges
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- E—FIXED CONSTRUCTIONS
- E01—CONSTRUCTION OF ROADS, RAILWAYS, OR BRIDGES
- E01D—CONSTRUCTION OF BRIDGES, ELEVATED ROADWAYS OR VIADUCTS; ASSEMBLY OF BRIDGES
- E01D2101/00—Material constitution of bridges
- E01D2101/20—Concrete, stone or stone-like material
- E01D2101/24—Concrete
- E01D2101/26—Concrete reinforced
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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
- E01D2101/00—Material constitution of bridges
- E01D2101/20—Concrete, stone or stone-like material
- E01D2101/24—Concrete
- E01D2101/26—Concrete reinforced
- E01D2101/28—Concrete reinforced prestressed
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Abstract
The invention relates to a curved rail groove structure of a linear box-shaped bridge and a manufacturing method thereof, wherein the curved rail groove structure comprises a linear box-shaped bridge body, two integrally formed curved rail grooves are arranged on the top surface of the linear box-shaped bridge body and can be used for a turning road section; the linear box-shaped bridge is manufactured by adopting an adjusting bracket and a post-tensioning prestressing method. The adjusting support comprises a frame, a plurality of door-shaped supports and a push-pull linkage assembly, the push-pull linkage assembly comprises a pushing and pulling back cross rod, an inner transverse stay bar and an outer transverse stay bar, and the pushing and pulling back cross rod, the inner transverse stay bar and the outer transverse stay bar are all acted on the steel rail groove template. The adjusting bracket can apply force to the steel rail groove template in the lateral direction, so that the steel rail groove template deforms under the stress; the deformation radian of the steel rail groove template is controlled by adjusting the transverse displacement of the pushing and pulling cross rod, so that the curve radius of the steel rail groove template is adjusted; the door-shaped support is not adjustable and is just matched with the steel film of the linear box-shaped bridge, and the door-shaped support and the steel film are matched together, so that the linear box-shaped bridge with the curved rail groove can be quickly manufactured.
Description
Technical Field
The invention relates to the technical field of track bridges, in particular to a curved rail groove structure of a linear box-shaped bridge and a manufacturing method thereof.
Background
Railroad bridges are structures that railways cross rivers, lakes, straits, valleys, or other obstacles, and are constructed to achieve grade crossings of a railroad line with a railroad line or road.
The traditional railway bridge is usually constructed by firstly constructing the bridge, then installing a prefabricated track plate on a plate girder, and finally installing steel rails on the track plate. In the railway bridge with the structure, the track plate is a track plate, and the plate beam is a plate beam, so that the structure is complex, the construction method is complicated, the construction period is long, and the construction cost is high.
Aiming at the problems of the traditional railroad bridge, the Chinese patent document with the publication number of CN110607736A discloses a pile foundation rail plate beam structure and a construction method, wherein the pile foundation rail plate beam structure comprises a pile column, a rail plate beam and a cover beam transversely arranged at the top of the pile column, the rail plate beam is longitudinally laid and comprises a prestressed concrete plate beam, and two ends of the prestressed concrete plate beam are respectively supported on one cover beam; the top surface of the prestressed concrete slab beam is provided with two rail bearing grooves, and the steel rails are directly paved in the rail bearing grooves. The pile foundation rail plate girder structure of this structure unites two into one the track function and bridge function, constitutes simply, can simplify construction process, shortens construction cycle, reduces construction cost.
However, railway lines often have curved turnaround sections, so that two support grooves for laying rails need to accommodate the line curve. However, in the prior art, the rail bearing grooves on the rail plate beam are all straight grooves, and are difficult to be used in turning road sections.
Secondly, the rail plate beam is usually manufactured by adopting a post-tensioning prestressing method, and the rail plate beam manufactured by the post-tensioning prestressing method is a linear beam. How to form curved rail grooves on a linear beam becomes another problem to be solved. Thirdly, different lines and different positions have different curvatures, and how to provide a steel rail groove template manufacturing tool capable of adjusting the curvature according to different requirements is a problem to be considered.
Disclosure of Invention
The application provides a curved rail groove structure of a linear box-shaped bridge and a manufacturing method thereof, which mainly solves the technical problem that the conventional rail bearing grooves are all linear grooves and are difficult to be used in turning road sections; secondly, the problem of how to form a curved rail bearing groove on the linear beam is solved, and finally the problem of how to adjust the curvature of the steel rail groove to manufacture the template according to different requirements is solved.
The application is realized by the following technical scheme:
the application provides a straight line box bridge curve rail groove structure, including straight line box bridge body, straight line box bridge body top surface has two curved rail grooves of integrated into one piece.
The application provides a manufacturing method of a curve rail groove structure of a linear box-shaped bridge, which comprises the following steps:
hanging and binding the bottom plate ribs and the web ribs of the bridge into the external mold of the bridge;
hoisting the box-shaped bridge inner membrane and installing a bridge end mould;
hanging and binding the top plate rib and the curved steel rail groove rib of the bridge;
presetting two steel rail groove templates, wherein each steel rail groove template comprises two groove vertical plates and a groove bottom plate,
hoisting and installing a pre-adjusted steel rail groove template;
the pre-adjusted steel rail groove template and the curved steel rail groove rib on the bridge surface are matched, and then fine adjustment and fixation are carried out;
the post-tensioned prestressed steel bar pipeline penetrates through the post-tensioned prestressed steel bar pipeline and is fixed with the end die;
pouring box girder concrete and trowelling and smoothing the bridge surface and the track surface;
preserving health;
removing the steel rail groove template, the end mould and the box-shaped bridge inner membrane;
the box girder is lifted out of the bridge production platform and transported to a girder yard for storage;
and (5) carrying out post-tensioned prestressed reinforcement bar penetrating, tensioning, anchor sealing and secondary curing.
Optionally, in order to solve the problem of adjusting the curvature of the steel rail groove manufacturing template according to different requirements, an adjusting bracket is adopted in the step of pre-adjusting the steel rail groove template, the adjusting bracket comprises a plurality of adjusting bracket bodies, and the plurality of adjusting bracket bodies are arranged at intervals along the two steel rail groove templates;
the adjusting support body comprises a door-shaped support and a push-pull linkage assembly, the door-shaped support comprises a cross beam and supporting legs on two sides, two steel rail groove templates are positioned between the supporting legs on the two sides of the door-shaped support, and the door-shaped support is matched with the outer bridge mold;
the push-pull linkage assembly comprises two push-pull back cross rods, two inner transverse support rods and two outer transverse support rods, the two push-pull back cross rods correspond to the two rail groove templates one by one, the push-pull back cross rods are screw rods, the two push-pull back cross rods are respectively installed in horizontal threaded holes of a supporting leg on one side of the portal support, and one end of each push-pull back cross rod is connected to a groove vertical plate of the corresponding rail groove template from the outer side;
the two inner transverse supporting rods are respectively positioned in one of the rail groove templates, two ends of each inner transverse supporting rod respectively prop against two groove vertical plates of the corresponding rail groove template, and the inner transverse supporting rods can stretch or cannot stretch;
the outer transverse supporting rods are positioned between the two steel rail groove templates and respectively prop against the groove vertical plates of the corresponding steel rail groove templates from the outer sides, and the outer transverse supporting rods are or are not fixed long rods; the steel rail groove template and the outer transverse supporting rod are movably connected with the cross beam.
The pre-adjusting two steel rail groove templates specifically comprise: adjusting the pushing and pulling cross rods on two sides simultaneously, wherein the outer cross support rods are propped against the two steel rail groove templates, and the two pushing and pulling cross rods respectively generate pushing force and pulling force on the steel rail groove templates; two pushing and pulling linkage rod pieces formed by the two pushing and pulling transverse rods, the two inner transverse supporting rods and the outer transverse supporting rods enable the two steel rail groove templates to be synchronously linked; the rail groove templates are deformed through the combined action of the push-pull linkage assemblies at a plurality of point positions to form the rail groove templates with required curve radiuses, and at the moment, the two rail groove templates and the adjusting bracket are fastened into a whole; then hoisting the pre-adjusted steel rail groove template and the adjusting bracket into the steel rail groove template; when the steel rail groove templates are removed, the two steel rail groove templates and the adjusting bracket are removed together as a whole.
Optionally, an in-groove component is placed in the rail groove template, the in-groove component is located below the inner transverse supporting rod, and the two groove vertical plates of the rail groove template are separated from the groove bottom plate; the in-groove assembly comprises an inner pushing dowel bar, a connecting vertical bar and a sucker, wherein two ends of the inner pushing dowel bar are respectively propped against the two groove vertical plates, the sucker is sucked on the groove bottom plate, and the inner pushing dowel bar is telescopic or not telescopic; the inner pushing dowel bar is connected with the cross beam through or without a connecting rope.
Particularly, the pushing and pulling cross rod, the inner transverse stay bar, the outer transverse stay bar and the inner pushing and pushing dowel bar are respectively connected with the groove vertical plate through U-shaped fasteners, and the U-shaped fasteners are fixedly connected with the groove vertical plate; one end of the pushing and pulling cross rod is connected with a plate head, the two ends of the inner transverse stay bar, the outer transverse stay bar and the inner pushing and pulling force transmission rod are connected with the plate head, and the plate head is sleeved in the U-shaped fastener; a side plate of the U-shaped fastener is provided with or not provided with a strip-shaped notch, the opening of the strip-shaped notch does not face downwards, and the inner transverse supporting rod, the outer transverse supporting rod and the inner pushing force transmission rod are arranged in the strip-shaped notch.
Optionally, the two steel rail groove templates are respectively connected with the beam through template hanging devices; the template hanging device comprises a transverse supporting rod and a vertical plate moving suspension rod, wherein two ends of the transverse supporting rod are respectively in threaded connection with two groove vertical plates of the steel rail groove template, the lower end of the vertical plate moving suspension rod is connected with the transverse supporting rod, and the upper end of the vertical plate moving suspension rod is in linear sliding connection or rolling connection with the cross beam; the outer transverse supporting rod is connected with the cross beam through at least one hanging rod, the lower end of the hanging rod is connected with the outer transverse supporting rod, and the upper end of the hanging rod is linearly connected with the cross beam in a sliding or rolling mode.
Particularly, the hanger rod and the vertical plate moving hanger rod are respectively connected with the cross beam through rolling bearings; the cross beam comprises two transverse rectangular tubes which are arranged side by side at intervals, and two ends of the rolling bearing are respectively supported on one of the transverse rectangular tubes; or the tops of the suspender and the vertical plate moving suspender are respectively connected with a sliding block, the beam is provided with a linear slide rail, and the sliding block is connected with the linear slide rail in a sliding manner.
Particularly, the adjusting bracket also comprises a bottom frame matched with the bridge outer mold, the door-shaped brackets of the adjusting bracket bodies are arranged at intervals along the straight line of the bottom frame, and the supporting legs at two sides of the door-shaped brackets are fixedly connected with the frames at two sides of the bottom frame.
Compared with the prior art, the method has the following beneficial effects:
the straight-line box-shaped bridge is provided with a curve rail groove and can be used for turning road sections;
2, two curved rail grooves are formed on the linear box-shaped bridge by adopting a post-tensioning prestressing method;
3, the adjusting bracket can apply force to the steel rail groove template in a lateral direction, so that the steel rail groove template deforms under stress; the deformation radian of the steel rail groove template is controlled by adjusting the transverse displacement of the pushing and pulling cross rod, so that the curve radius of the steel rail groove template is adjusted; the door-shaped support is not adjustable and is just matched with the steel membrane of the linear box-shaped bridge, and the door-shaped support and the steel membrane are matched together, so that the linear box-shaped bridge with the curved rail groove can be quickly manufactured.
Drawings
The accompanying drawings, which are included to provide a further understanding of the embodiments of the invention and are incorporated in and constitute a part of this application, illustrate embodiments of the invention and together with the description serve to explain the principles of the invention.
FIG. 1 is a sectional view of a straight box bridge body according to an embodiment;
FIG. 2 is a top view of the rectilinear box-shaped bridge body of the embodiment;
FIG. 3 is a flow chart of a method for manufacturing a curved rail groove structure of a straight-line box-shaped bridge according to an embodiment;
FIG. 4 is a schematic diagram of a template for manufacturing a curved rail groove structure of a linear box-shaped bridge in the embodiment;
FIG. 5 is a schematic view of a rail groove formwork in an embodiment;
FIG. 6 is a front view of the adjustment bracket body and rail groove form in an embodiment;
figure 7 is a three-dimensional view of a plurality of door-shaped supports of the embodiment fixed with a bottom frame;
FIG. 8 is a front view of the bottom frame and a plurality of adjustable stand bodies of the present embodiment;
FIG. 9 is a three-dimensional view of an in-slot assembly of an embodiment;
FIG. 10 is a three-dimensional view of an embodiment of an inner cross brace and an inner push dowel;
FIG. 11 is a three-dimensional view of the rail groove form assembled together with the form hanger, inner cross braces, inner push transfer bars and rail groove forms of the embodiment;
FIG. 12 is a three-dimensional view of one of the portal frames of the embodiments;
FIG. 13 is a three-dimensional view of the rail channel form suspended from the cross member in the embodiment;
FIG. 14 is a three-dimensional view of another portal frame of the present embodiment;
FIG. 15 is a three-dimensional view of the rail groove forms assembled together with the form hanger, inner cross braces, inner push transfer bars, push pullback bars, and the embodiment of the present invention;
FIG. 16 is an enlarged view of a portion of FIG. 10 at A;
FIG. 17 is a schematic view of an embodiment of the U-shaped fastener with the opening oriented horizontally forward/rearward;
FIG. 18 is a three dimensional view of a U-shaped fastener of the embodiment;
FIG. 19 is a schematic diagram of the adjustment bracket adjusting the curve of the rail groove in this embodiment;
FIG. 20 is a schematic view of a straight box bridge constructed using the alignment brackets;
FIG. 21 is a plan view of the straight box girder according to the present embodiment when the adjustment amount of the radius of the curve is large;
fig. 22 is a cross-sectional view taken at B-B in fig. 21.
Detailed Description
In order to make the objects, technical solutions and advantages of the present invention clearer, the technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments. It is to be understood that the described embodiments are only a few embodiments of the present invention, and not all embodiments. The components of embodiments of the present invention generally described and illustrated in the figures herein may be arranged and designed in a wide variety of different configurations.
Thus, the following detailed description of the embodiments of the present invention, presented in the figures, is not intended to limit the scope of the invention, as claimed, but is merely representative of selected embodiments of the invention. All other embodiments, which can be obtained by a person skilled in the art without any inventive step based on the embodiments of the present invention, are within the scope of the present invention.
In addition, the embodiments of the present invention and the features of the embodiments may be combined with each other without conflict. It should be noted that, in the present specification, the embodiments are all described in a progressive manner, each embodiment focuses on differences from other embodiments, and the same and similar parts among the embodiments may be referred to each other.
It should be noted that: like reference numbers and letters refer to like items in the following figures, and thus, once an item is defined in one figure, it need not be further defined and explained in subsequent figures.
In the description of the present invention, it should be noted that the terms "upper", "lower", "inside", "outside", and the like indicate orientations or positional relationships based on the orientations or positional relationships shown in the drawings, or orientations or positional relationships that are conventionally arranged when the products of the present invention are used, or orientations or positional relationships that are conventionally understood by those skilled in the art, which are merely used for convenience of description and simplification of description, and do not indicate or imply that the devices or elements that are referred to must have a specific orientation, be constructed in a specific orientation, and be operated, and thus, should not be construed as limiting the present invention.
In the description of the present invention, it should also be noted that, unless otherwise explicitly stated or limited, the terms "disposed," "mounted," "connected," and "connected" are to be construed broadly and may be, for example, fixedly connected, detachably connected, or integrally connected; can be mechanically or electrically connected; they may be connected directly or indirectly through intervening media, or they may be interconnected between two elements. The specific meanings of the above terms in the present invention can be understood in specific cases to those skilled in the art.
As shown in fig. 1 and 2, the curved rail groove structure of the linear box-shaped bridge disclosed in this embodiment includes a linear box-shaped bridge body 100, and two curved rail grooves 200 integrally formed on the top surface of the linear box-shaped bridge body 100.
It should be noted that the dimensions of the linear box-shaped bridge body 100 and the curved rail groove 200 may be appropriately set as required. In one possible design, the linear box bridge body 100 is 3m wide and 20m long; the width of the curved rail groove 200 is 200mm, the depth is 150mm, and the center distance of the two curved rail grooves 200 is 1435 mm.
As shown in fig. 3 and 4, the method for manufacturing the curved rail groove structure of the linear box bridge specifically includes the following steps:
s1, construction preparation;
s2, manufacturing bridge steel bars;
s3, fixing the bridge outer die 92 on the bridge template outer bracket 91;
s4, hanging and binding the bottom plate ribs and the web ribs of the bridge into the external bridge mold 92;
s5, hoisting a box-shaped bridge inner membrane 93, and installing a bridge end mould;
s6, hoisting and binding the top plate ribs and the curved steel rail groove ribs of the bridge;
s7, pre-adjusting the rail groove template 1; as shown in fig. 5, the rail groove mold plate 1 includes two groove standing plates 11 and a groove bottom plate 12, and the groove standing plates 11 and the groove bottom plate 12 form the rail groove mold plate 1. It is worth noting that the dimensions of the channel floor 11 and the channel floor 12 are set according to the dimensions of the curved rail channel 200;
s8, hoisting and installing the pre-adjusted steel rail groove template 1;
s9, the pre-adjusted steel rail groove template 1 and the bridge surface curve steel rail groove rib are matched, and then fine adjustment and fixation are carried out;
s10, penetrating through the post-tensioned pre-stressed steel bar pipeline which is fixed with the end mould;
s11, pouring box girder concrete and troweling and smoothing the bridge surface and the track surface;
s12, fully sealing the tarpaulin, and performing steam temperature control and health preservation;
s13, removing the steel rail groove template 1, the end mould and the box-shaped bridge inner membrane 93;
s14, lifting the box girder out of the bridge production platform and moving the box girder to a girder storage field;
s15, performing post-tensioned prestressed reinforcement bar penetrating, tensioning, anchor sealing and water spraying maintenance in a beam storage field;
and S16, marking the mark after the health preserving is finished, and storing the mark to be transported to a standby state.
In order to facilitate the adjustment of the curvature of the rail groove formwork 1, in one possible design, an adjusting bracket is further provided, as shown in fig. 6-8, and includes a bottom frame 8 and a plurality of adjusting bracket bodies, and the adjusting bracket bodies include a door type bracket 2 and a push-pull linkage assembly 3. The plurality of gate brackets 2 are linearly arranged along the length direction of the bottom frame 8 at intervals.
The bottom frame 8 and the door-shaped support 2 mainly play a supporting role, and the bottom frame 8 is matched with a bridge steel film. The door-shaped support 2 comprises a cross beam 22 and two side support legs 21, the two side support legs 21 of the door-shaped support 2 are fixedly connected with two side frames of the bottom frame 8, and the door-shaped supports 2 of a plurality of adjusting support bodies are fixedly connected into a whole through the bottom frame 8, so that the use is more convenient. In particular, the bottom frame 8 is a rectangular frame.
It is worth to be noted that the inner diameter length of the bottom frame 8 is slightly longer than the actual box girder length and is matched with the length of the box girder steel mold. The inner diameter width of the bottom frame 8 can be smaller than the actual box girder width, and the maximum lateral adjustment amount of the push-pull linkage assembly 3 can be reasonably satisfied. Of course, the width of the bottom frame 8 can be larger than the width of the actual box girder, so that the whole adjusting bracket is more stable.
Two rail groove formworks 1 are hung on the cross beam 22 and positioned between the support legs 21 on two sides of the door-shaped support 2. The push-pull linkage component 3 is mainly used for applying force to the rail groove template 1 from the side direction so as to centralize the rail groove template 1 and adjust the curvature of the rail groove template according to the requirement
The push-pull linkage assembly 3 comprises two pushing and pulling crossbars 31, two inner transverse supporting rods 32 and an outer transverse supporting rod 33. The two pushing and pulling back cross rods 31 correspond to the two rail groove templates 1 one by one, the pushing and pulling back cross rods 31 are screw rods, the two pushing and pulling back cross rods 31 are respectively installed in the horizontal threaded holes 23 of the supporting legs 21 on one side of the door-shaped support 2, and one end of each pushing and pulling back cross rod 31 is connected to the groove vertical plate 11 of the corresponding rail groove template 1 from the outer side.
The two inner transverse supporting rods 32 are respectively positioned in one of the rail groove templates 1, and two ends of each inner transverse supporting rod 32 are respectively propped against the two groove vertical plates 11 of the corresponding rail groove template 1. The outer transverse supporting rods 33 are positioned between the two rail groove templates 1, and the outer transverse supporting rods 33 are respectively propped against the groove vertical plates 11 of the corresponding rail groove templates 1 from the outer sides. The rail channel template 1 and the outer cross brace 33 are movably connected with the cross beam 22 and can move linearly along the cross beam 22. The steel rail groove template 1 and the outer transverse supporting rods 33 are connected with the cross beams 22, and the cross beams 22 generate vertical acting force on the cross beams, so that the overall strength and stability can be enhanced.
As shown in fig. 9-11, the two channel risers 11 of the rail channel formwork 1 are separated from the channel floor 12. The groove vertical plate 11 and the groove bottom plate 12 are independent long laths and can be bent in a jacking or stretching mode more flexibly, so that different curve radiuses can be formed conveniently. And splicing the groove vertical plate 11 and the groove bottom plate 12 into the steel rail groove template 1. An in-groove component 5 is placed in the steel rail groove template 1, the in-groove component 5 comprises an inner pushing dowel bar 51, a connecting vertical bar 52 and a sucker 53, the inner pushing dowel bar 51 is located below the inner transverse supporting bar 32, two ends of the inner pushing dowel bar 51 respectively push against the two groove vertical plates 11, and the sucker 53 is sucked on the groove bottom plate 12.
The connecting rod 52 can be a screw, and a nut is embedded in the suction cup 53, and the two are connected together through threads. In one possible design, the inner push dowel 51 is connected to the cross beam 22 by a connecting cord 54.
Optionally, two steel plate strips with the thickness of 20m × 0.3m × 5mm are used as the groove vertical plates 11; a 20m by 0.2m by 5mm plastic strip was used as the cell floor 12. The suction cup 53 may be a gel cup for easy suction by the suction cup 53.
In order to facilitate demoulding after the concrete is hardened, the inner transverse supporting rod 32 and the inner jacking dowel bar 51 can be extended and contracted. Normally, both ends of the inner cross brace 32 and the inner push dowel bar 51 are pressed against the groove vertical plate 11 of the rail groove formwork 1, so that the concrete is shortened when being demolded. In particular, the inner cross brace 32 and the inner push dowel bar 51 are both threaded telescopic bars. In one possible design, as shown in fig. 10, the inner cross brace 32 and the inner push transmission rod 51 each include a threaded cylinder 351 and two threaded rods 532 disposed at both ends of the threaded cylinder 351, the threaded cylinder 351 has two opposite threads, and the two threaded rods 532 are respectively in threaded connection with one of the two sections. Preferably, the inner cross brace 32 and the inner push transfer rod 51 extend to a longest dimension that is the rail groove gauge dimension.
In a possible design, the two steel rail groove templates 1 are respectively connected with the cross beam 22 through template hanging devices 6, the lower ends of the template hanging devices 6 are connected with the two groove vertical plates 11 of the steel rail groove templates 1, and the upper ends of the template hanging devices 6 are linearly connected with the cross beam 22 in a sliding or rolling manner; the outer transverse supporting rod 33 is connected with the cross beam 22 through at least one suspension rod 34, the lower end of the suspension rod 34 is connected with the outer transverse supporting rod 33, and the upper end of the suspension rod 34 is linearly connected with the cross beam 22 in a sliding or rolling mode.
Specifically, as shown in fig. 11, the template hanging device 6 includes a transverse support rod 61 and a vertical plate moving hanger rod 62, two ends of the transverse support rod 61 are respectively connected with two groove vertical plates 11 of the rail groove template 1 by screw threads, the lower end of the vertical plate moving hanger rod 62 is connected with the transverse support rod 61, and the upper end of the vertical plate moving hanger rod 62 is linearly connected with the cross beam 22 in a sliding manner or in a rolling manner; the outer cross brace 33 is connected to the cross beam 22 by two hanger rods 34.
In particular, the outer transverse stay 33 is a fixed-length rod to ensure that the two rail grooves are always kept parallel. The transverse supporting rod 61 is a fixed long rod, only two ends of the transverse supporting rod are provided with threads, the transverse supporting rod penetrates through the corresponding through hole on the groove vertical plate 11, and the inner side and the outer side of the transverse supporting rod are fixed by nuts. The main functions of the transverse struts 61 are: when the groove vertical plate 11 is adjusted to move, the fixed width size of the rail groove is ensured to be unchanged.
In one possible design, shown in fig. 11-13, the hanger rods 34 and the formwork hangers 6 are each connected to the cross-member 22 by rolling bearings 7; the cross beam 22 comprises two transverse rectangular tubes 121 which are arranged side by side and at intervals, and two ends of the rolling bearing 7 are respectively supported on one transverse rectangular tube 121. The vertical plate moving suspension rod 62 and the suspension rod 34 are both rotationally connected with the rolling bearing 7. In one possible design, to facilitate the connection of the connecting rope 54 to the cross beam 22, as shown in fig. 14, the cross beam 22 further includes two longitudinal rectangular pipes 222, two ends of each longitudinal rectangular pipe 222 are connected to one of the transverse rectangular pipes 121, and the upper end of the connecting rope 54 is connected to the longitudinal rectangular pipe 222.
In one possible design, the top of the hanger bar 34 and the top of the template hanger 6 are respectively connected with a slide block, a linear slide rail is arranged on the cross beam 22, the slide block is arranged in the linear slide rail, and a groove can be formed on the cross beam 22 to form the linear slide rail.
In one possible design, as shown in fig. 15-18, the push pull-back cross bar 31, the inner cross brace 32, the outer cross brace 33 and the inner push transmission bar 51 are respectively connected to the channel plate 11 through U-shaped fasteners 111, and the U-shaped fasteners 111 are fixedly connected to the channel plate 11.
Specifically, a U-shaped fastener 111 is fixedly connected to the outer side wall of the groove vertical plate 11; the inside wall of groove riser 11 is fixed with two upper and lower U type fasteners 111. One end of the pushing and pulling cross rod 31 is connected with a plate head 311, and the plate head 311 is sleeved in the U-shaped fastener 111, so that the pushing and pulling cross rod 31 can push and pull the groove vertical plate 11. The two ends of the inner transverse supporting rod 32, the outer transverse supporting rod 33 and the inner pushing force transmission rod 51 are connected with the plate heads 311, and the plate heads 311 are sleeved in the U-shaped fasteners 111, so that the two ends of the inner transverse supporting rod 32, the outer transverse supporting rod 33 and the inner pushing force transmission rod 51 are supported and prevented from sliding downwards; meanwhile, the inner transverse supporting rod 32 and the outer transverse supporting rod 33 can be adjusted to extend to abut against the groove vertical plates 11 on two sides and can be shortened so as to be convenient for demoulding after the concrete is hardened.
In particular, in order to facilitate the plate head 311 to be inserted into the U-shaped fastener 111, as shown in fig. 18, a side plate of the U-shaped fastener 111 is provided with a strip-shaped notch 112, and the pushing and pulling cross bar 31, the inner cross bar 32, and the inner pushing and pushing force transmission bar 51 are installed in the strip-shaped notch 112. It should be noted that the opening of the strip-shaped notch 112 is not downward, but can be oriented in the horizontal direction, preferably upward, to prevent the rod from falling off under the action of its own weight. In particular, the plate head 311 is a circular plate head with a diameter larger than the width of the strip-shaped notch 112.
In one possible design, step S7 is specifically: the adjusting bracket is arranged on the platform, the pushing and pulling-back cross rods 31 on two sides are adjusted at the same time, and the outer cross brace 33 is propped against the two rail groove templates 1 and can move along with the adjustment of the pushing and pulling-back cross rods 31; the two rail groove formworks 1 can be synchronously linked by a push-pull linkage rod 3 consisting of two push-pull transverse rods 31, two inner transverse supporting rods 32 and two outer transverse supporting rods 33. The rail groove template 1 is deformed through the combined action of the push-pull linkage assemblies 3 at a plurality of point positions, and finally the adjustment of the curve of the rail groove can be realized, so that the rail groove template forms the required curve radius rail groove model shape, as shown in fig. 19.
Step S8 specifically includes: and integrally hoisting the pre-adjusted steel rail groove template and the adjusting bracket.
Step S9 specifically includes: the bottom frame 8 is arranged on the bridge template outer support 91 and the bridge outer mold 92, the pre-adjusted steel rail groove template 1 and the bridge surface curve steel rail groove rib are matched, and then fine adjustment and fixation are carried out, as shown in figure 20.
In step S13, the adjusting bracket, the end form of the rail groove form 1, and the inner film 93 of the box bridge are removed together.
In one possible design, the adjustment bracket body is provided every other meter. Take the length of the rail groove formwork 1 as 20m as an example. If the curve radius adjustment amount is less than 150mm, the two curve rail grooves 200 are arranged in bilateral symmetry relative to the central line of the straight box-shaped bridge body 100; as shown in fig. 1 and 2.
If the curve radius adjustment is larger than 150mm, the two curve rail grooves 200 are eccentrically arranged, as shown in fig. 21 and 22. In particular, the maximum adjustment absolute value of the 20m long curved rail groove 200 is 251mm, and the corresponding radius is 100 m.
The application of force can be carried out the side direction to the rail groove template to the adjustment support to make rail groove template atress warp, thereby adjust the curve radius of rail groove template, make the straight line box bridge of preparation have the curve rail groove, can be used to the turn highway section.
The above embodiments are provided to explain the objects, technical solutions and advantages of the present invention in further detail, and it should be understood that the above embodiments are merely exemplary embodiments of the present invention and are not intended to limit the scope of the present invention, and any modifications, equivalents, improvements and the like made within the spirit and principle of the present invention should be included in the scope of the present invention.
Claims (10)
1. The utility model provides a straight line box bridge curve rail groove structure, includes straight line box bridge body (100), its characterized in that: the top surface of the straight-line box-shaped bridge body (100) is provided with two integrally-formed curve rail grooves (200).
2. The curved rail groove structure of a linear box bridge according to claim 1, wherein: the width of the curve rail groove (200) is 200mm, and the depth of the curve rail groove is 150 mm.
3. The method for manufacturing the curved rail groove structure of the linear box-shaped bridge as claimed in claim 1 or 2, wherein: the method comprises the following steps:
hanging the bottom plate ribs and the web ribs of the bridge into an external bridge mold (92) and binding;
hoisting the box-shaped bridge inner membrane (93) and installing a bridge end mould;
hoisting and binding the top plate rib and the curved steel rail groove rib of the bridge;
presetting two steel rail groove templates (1), wherein each steel rail groove template (1) comprises two groove vertical plates (11) and a groove bottom plate (12),
hoisting and installing a pre-adjusted steel rail groove template (1);
the pre-adjusted steel rail groove template (1) and the curved steel rail groove rib on the bridge surface are matched, and then fine adjustment and fixation are carried out;
the post-tensioned prestressed steel bar pipeline penetrates through the post-tensioned prestressed steel bar pipeline and is fixed with the end mold;
pouring box girder concrete and trowelling and smoothing the bridge surface and the track surface;
preserving health;
dismantling the steel rail groove template (1), the end mould and the box-shaped bridge inner membrane (93);
the box girder is lifted out of the bridge production platform and transported to a girder yard for storage;
and (5) carrying out post-tensioned prestressed reinforcement bar penetrating, tensioning, anchor sealing and secondary curing.
4. The method of manufacturing according to claim 3, wherein: the step of pre-adjusting the steel rail groove template (1) adopts an adjusting bracket, wherein the adjusting bracket comprises a plurality of adjusting bracket bodies, and the plurality of adjusting bracket bodies are arranged at intervals along the two steel rail groove templates (1);
the adjustment support body includes:
the portal support (2) comprises a cross beam (22) and supporting legs (21) on two sides, the two steel rail groove templates (1) are positioned between the supporting legs (21) on two sides of the portal support (2), and the portal support (2) is matched with the bridge outer mold (92);
push-pull linkage assembly (3) comprising:
the two pushing and pulling-back cross rods (31) correspond to the two steel rail groove templates (1) one by one, the pushing and pulling-back cross rods (31) are screw rods, the two pushing and pulling-back cross rods (31) are respectively arranged in horizontal threaded holes (23) of supporting legs (21) on one side of the portal support (2), and one ends of the pushing and pulling-back cross rods (31) are connected to groove vertical plates (11) of the corresponding steel rail groove templates (1) from the outer side;
the two inner transverse supporting rods (32) are respectively positioned in one rail groove template (1), two ends of each inner transverse supporting rod (32) are respectively propped against the two groove vertical plates (11) of the corresponding rail groove template (1), and each inner transverse supporting rod (32) can stretch or cannot stretch;
the outer transverse supporting rods (33) are positioned between the two rail groove templates (1), the outer transverse supporting rods (33) are respectively propped against the groove vertical plates (11) of the corresponding rail groove templates (1) from the outer sides, and the outer transverse supporting rods (33) are or are not fixed-length rods;
the steel rail groove template (1) and the outer transverse stay bar (33) are movably connected with the cross beam (22);
the pre-adjusting two steel rail groove templates (1) are specifically as follows: simultaneously adjusting the pushing and pulling cross rods (31) at two sides, wherein the outer cross brace rods (33) are propped against the two rail groove templates (1), and the two pushing and pulling cross rods (31) respectively generate pushing force and pulling force on the rail groove templates (1); a push-pull linkage rod piece (3) consisting of two push-pull back cross rods (31), two inner transverse supporting rods (32) and an outer transverse supporting rod (33) enables the two steel rail groove templates (1) to synchronously link; under the combined action of the push-pull linkage assemblies (3) at a plurality of point positions, the steel rail groove template (1) is deformed to form the steel rail groove template (1) with the required curve radius, and at the moment, the two steel rail groove templates (1) and the adjusting bracket are fastened into a whole;
then hoisting the pre-adjusted steel rail groove template (1) and the adjusting bracket into the steel rail groove template;
when the rail groove templates (1) are removed, the two rail groove templates (1) and the adjusting bracket are removed together as a whole.
5. The method of manufacturing according to claim 4, wherein: an in-groove component (5) is arranged in the steel rail groove template (1), the in-groove component (5) is positioned below the inner transverse stay bar (32), and two groove vertical plates (11) of the steel rail groove template (1) are separated from a groove bottom plate (12);
the in-groove assembly (5) comprises an inner pushing dowel bar (51), a connecting vertical bar (52) and a sucker (53), two ends of the inner pushing dowel bar (51) are respectively propped against the two groove vertical plates (11), the sucker (53) is sucked on the groove bottom plate (12), and the inner pushing dowel bar (51) can stretch or not stretch;
the inner top pushing dowel bar (51) is connected with the cross beam (22) through or without a connecting rope (54).
6. The method of manufacturing according to claim 5, wherein: the inner transverse supporting rod (32) and the inner top pushing force transfer rod (51) are both threaded telescopic rods.
7. The manufacturing method according to claim 5 or 6, characterized in that: the pushing and pulling cross rod (31), the inner cross rod (32), the outer cross rod (33) and the inner pushing and force transferring rod (51) are respectively connected with the groove vertical plate (11) through U-shaped fasteners (111), and the U-shaped fasteners (111) are fixedly connected with the groove vertical plate (11);
one end of the pushing and pulling-back cross rod (31) is connected with a plate head (311), two ends of the inner transverse stay bar (32), the outer transverse stay bar (33) and the inner pushing and pushing force transmission rod (51) are connected with the plate head (311), and the plate head (311) is sleeved in the U-shaped fastener (111);
a strip-shaped notch (112) is formed in the side plate of the U-shaped fastener (111) or not, the opening of the strip-shaped notch (112) does not face downwards, and the inner transverse supporting rod (32), the outer transverse supporting rod (33) and the inner pushing force transmission rod (51) are arranged in the strip-shaped notch (112).
8. The manufacturing method according to claim 5 or 6, characterized in that: the two steel rail groove templates (1) are respectively connected with the cross beam (22) through template hanging devices (6); the template hanging device (6) comprises a transverse supporting rod (61) and a vertical plate moving suspension rod (62), two ends of the transverse supporting rod (61) are respectively in threaded connection with two groove vertical plates (11) of the steel rail groove template (1), the lower end of the vertical plate moving suspension rod (62) is connected with the transverse supporting rod (61), and the upper end of the vertical plate moving suspension rod (62) is in linear sliding connection or rolling connection with the cross beam (22);
the outer transverse supporting rod (33) is connected with the cross beam (22) through at least one suspension rod (34), the lower end of the suspension rod (34) is connected with the outer transverse supporting rod (33), and the upper end of the suspension rod (34) is in linear sliding connection or rolling connection with the cross beam (22).
9. The method of manufacturing according to claim 8, wherein: the hanger rod (34) and the vertical plate moving hanger rod (62) are respectively connected with the cross beam (22) through a rolling bearing (7); the cross beam (22) comprises two transverse rectangular tubes (121) which are arranged side by side at intervals, and two ends of the rolling bearing (7) are respectively supported on one transverse rectangular tube (121);
or the tops of the hanger rods (34) and the vertical plate moving hanger rods (62) are respectively connected with a slide block, a linear slide rail is arranged on the cross beam (22), and the slide block is connected with the linear slide rail in a sliding manner.
10. The method of manufacturing according to any one of claims 3 to 6, 9, wherein: the adjusting bracket also comprises a bottom frame (8) matched with the bridge outer mold (92), the door-shaped brackets (2) of the adjusting bracket bodies are linearly arranged at intervals along the bottom frame (8), and the supporting legs (21) at two sides of the door-shaped brackets (2) are fixedly connected with the frames at two sides of the bottom frame (8).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202210878748.6A CN115094752A (en) | 2022-07-25 | 2022-07-25 | Linear box-shaped bridge curve rail groove structure and manufacturing method thereof |
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| Application Number | Priority Date | Filing Date | Title |
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| CN202210878748.6A CN115094752A (en) | 2022-07-25 | 2022-07-25 | Linear box-shaped bridge curve rail groove structure and manufacturing method thereof |
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