CN112609588A - Lower-support adjustable sound barrier beam cast-in-situ bridge deck supporting device and cast-in-situ construction method - Google Patents
Lower-support adjustable sound barrier beam cast-in-situ bridge deck supporting device and cast-in-situ construction method Download PDFInfo
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- CN112609588A CN112609588A CN202011516308.3A CN202011516308A CN112609588A CN 112609588 A CN112609588 A CN 112609588A CN 202011516308 A CN202011516308 A CN 202011516308A CN 112609588 A CN112609588 A CN 112609588A
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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
- E01D19/00—Structural or constructional details of bridges
- E01D19/12—Grating or flooring for bridges; Fastening railway sleepers or tracks to bridges
- E01D19/125—Grating or flooring for bridges
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Abstract
The invention discloses a lower-support adjustable sound barrier beam cast-in-place bridge deck plate supporting device, which comprises a plurality of main supporting frame units arranged along the length direction of a bridge body and distribution beams erected on the main supporting frame units, wherein each main supporting frame unit comprises a plurality of steel trusses arranged on the side wall of the upper part of the bridge body, the roots of the steel trusses are tightly attached to a web plate of the bridge body, and the inner ends of the steel trusses are fixed on the sides of the bridge body through finish-rolled deformed steel bars; the outer end of each steel truss is fixed with a fixing pile, an adjusting beam is arranged above each steel truss, the outer end of each adjusting beam is clamped at the upper end of the corresponding fixing pile, a plurality of adjusting screws are vertically arranged on the upper portion of each steel truss along the width direction of the bridge body, the upper ends of the adjusting screws are propped against the adjusting beams, and a plurality of distributing beams are erected at the top of each steel truss along the length direction of the bridge body. The invention also discloses a cast-in-place construction method for the cast-in-place bridge deck of the sound barrier beam by using the device. The invention can effectively improve the appearance quality and the construction efficiency of the bridge deck in the construction process.
Description
Technical Field
The invention belongs to the technical field of cast-in-place bridge deck slab construction, and particularly relates to a lower support adjustable type sound barrier beam cast-in-place bridge deck slab supporting device and a cast-in-place construction method.
Background
The cast-in-place bridge deck of the sound barrier beam is a bridge deck slab form which generally exists in railway traffic construction, and the existing cast-in-place bridge deck of the sound barrier beam is cast and formed in an I-shaped steel overhanging type mode. Adopt I-steel construction mode of encorbelmenting to pour decking, have following problem:
(1) the whole bridge deck is controlled by upward lifting of an I-shaped steel cantilever, errors are easy to generate, the integral lines of the cast cantilever type sound barrier beam cast-in-place bridge deck are fluctuated up and down, a protective layer is cast, the upper part and the lower part of a pavement of the bridge deck are uneven, and the drainage effect cannot be achieved;
(2) the construction of the bridge girder erection machine conflicts with the construction of the existing highway and railway dual-purpose bridge girder erection machine, and after the I-steel is threaded, the highway bridge girder erection machine cannot pass through the bridge girder erection machine, so that the construction of the bridge girder erection machine is influenced;
(3) u-shaped steel bars are embedded in wet joints to fix the I-shaped steel, so that the construction of a wet joint protective layer is influenced during the construction of the bridge deck, and waterproof coiled materials cannot be laid;
(4) the I-shaped steel cantilever type support is not firm, heavy, inconvenient to install and low in construction efficiency.
Disclosure of Invention
The invention aims to overcome the defects in the prior art, provides the lower support adjustable type sound barrier beam cast-in-place bridge deck supporting device which is simple in structure, reasonable in design and convenient to install, can effectively improve the appearance quality of a bridge deck in the construction process, improves the construction efficiency, and has wide popularization and application values in the construction of the sound barrier beam cast-in-place bridge deck.
In order to achieve the purpose, the invention adopts the technical scheme that: the utility model provides a cast-in-place decking strutting arrangement of sound barrier roof beam with adjustable hold in palm down which characterized in that: the distribution beam is erected on the main support frame unit to integrate the main support frame units, the main support frame unit comprises a plurality of steel trusses arranged on the side wall of the upper part of the bridge body, the steel trusses are arranged at intervals along the length direction of the bridge body, the root parts of the steel trusses are tightly attached to a web plate of the bridge body, and the inner end parts of the steel trusses are fixed on the side of the bridge body through finish-rolled threaded steel; every the equal vertical spud pile that is fixed with of outer tip of steel truss, every the top of steel truss is provided with the regulation crossbeam, the outer end card of adjusting the crossbeam is in the spud pile upper end that corresponds, the upper portion of steel truss is along the vertical a plurality of adjusting screw that are provided with of width direction of bridge roof beam body, and is a plurality of adjusting screw all is located between spud pile and the finish rolling screw-thread steel, adjusting screw's upper end top is on adjusting the crossbeam, many the top at every steel truss is set up along the length direction of bridge roof beam body to the distributive girder.
The cast-in-place decking strutting arrangement of sound barrier roof beam with adjustable foretell lower support, its characterized in that: the upper portion of finish rolling deformed steel bar is provided with the load-bearing piece, the load-bearing piece includes load-bearing plate and four spinal branch legs, the load-bearing plate is the cuboid structure, open at the center of load-bearing plate has the round hole, four spinal branch legs are fixed respectively on four angles in the bottom of load-bearing plate.
The cast-in-place decking strutting arrangement of sound barrier roof beam with adjustable foretell lower support, its characterized in that: the upper end of the finish rolling deformed steel bar penetrates through the round hole, the lower end of the finish rolling deformed steel bar is provided with a first locking nut which locks and fixes the finish rolling deformed steel bar on the steel truss, the upper end of the finish rolling deformed steel bar is provided with a second locking nut which locks and fixes the bearing block on the bridge body, the supporting legs are all supported at the top of the bridge body, and the second locking nut is located at the top of the bearing plate.
The cast-in-place decking strutting arrangement of sound barrier roof beam with adjustable foretell lower support, its characterized in that: corrugated pipes are sleeved on the outer sides of the supporting legs and the outer sides of the finish-rolled deformed steel bars and between the top surface of the bridge body and the bottom surface of the bearing plate.
The cast-in-place decking strutting arrangement of sound barrier roof beam with adjustable foretell lower support, its characterized in that: every the outer end top of steel truss all is fixed with the protection network stand, evenly open along length direction on the protection network stand has protection wire rope eyelet, and two adjacent wire rope wear to be equipped with between the protection wire rope eyelet that corresponds on the protection network stand, hang between two adjacent wire rope and be equipped with interim protection network.
The cast-in-place decking strutting arrangement of sound barrier roof beam with adjustable foretell lower support, its characterized in that: and the plurality of steel trusses are uniformly distributed at intervals along the length direction of the bridge body.
The cast-in-place decking strutting arrangement of sound barrier roof beam with adjustable foretell lower support, its characterized in that: and the upper part of each steel truss is provided with three adjusting screw rods, and the three adjusting screw rods are uniformly arranged on the bridge body.
The cast-in-place decking strutting arrangement of sound barrier roof beam with adjustable foretell lower support, its characterized in that: and a plurality of the distribution beams are uniformly arranged.
The cast-in-place decking strutting arrangement of sound barrier roof beam with adjustable foretell lower support, its characterized in that: the steel truss is a channel steel truss, the adjusting beam is a channel steel beam, and the distributing beam is a square steel beam.
Meanwhile, the invention also discloses a cast-in-place construction method for the cast-in-place bridge deck of the sound barrier beam by using the device, which is characterized by comprising the following steps:
firstly, marking the position of an opening on the outer side of a bridge body with pouring conditions in advance, and drilling a round hole in the marked position of the opening by using a water drill; if the position of the round hole is coincident with the position of the embedded steel bar on the bridge body, the position of the round hole is adjusted, and the embedded steel bar on the bridge body is not damaged;
step two, hoisting a steel truss to the outer side of the bridge body by using a 1T hoisting machine, placing the position of a bearing block, and installing corrugated pipes at four support legs of the bearing block and the round hole drilled in the step one;
thirdly, adjusting the position of the steel truss until the root of the steel truss is attached to and perpendicular to the web plate of the bridge girder, enabling the finish-rolled deformed steel bar to pass through the bottom of the round hole, fixing the bottom of the finish-rolled deformed steel bar and the steel truss through a first locking nut, and locking and fixing the force bearing block on the bridge girder through a second locking nut;
fourthly, clamping an opening at the end part of the adjusting cross beam at the upper end of the fixing pile to prevent the adjusting cross beam from moving, and pushing the upper end of the adjusting lead screw at the bottom of the adjusting cross beam to finish the assembly of each main support frame unit;
step five, after the main support frame unit is installed, installing distribution beams, after the distribution beams are installed, operating personnel fixedly connect the bamboo plywood bottom die to the upper parts of the distribution beams, and after each distribution beam is installed, adjusting the flatness of the bamboo plywood bottom die through adjusting a lead screw, and installing one adjustment block;
and step six, after the installation of the bottom die of the bamboo plywood is finished, installing an outer die and an inner die, finally installing a temporary protective net on the outer side of the steel truss, and pouring and molding the bridge deck after the installation is finished.
Compared with the prior art, the invention has the following advantages:
1. compared with an I-steel cantilever type, the supporting device overcomes the conflict with a highway-railway dual-purpose bridge girder erection machine in the existing construction, does not block a girder erection channel, has strong practicability, and has wide popularization and application values in the construction of a sound barrier beam cast-in-place bridge deck.
2. The supporting device is simple in structure and reasonable in design, and can remarkably improve the quality and efficiency in the construction process.
3. The support device is easy to set up, convenient to use and operate and high in practicability, and can effectively improve the pouring quality and the manual efficiency, so that the economic benefit is improved.
4. The steel truss of the template bottom supporting structure of the supporting device is made of square steel, a framework is not added on the bamboo plywood model any more, and the safety is high.
5. In the process of installing the template, the flatness of the template is adjusted in time through the adjusting beam, so that all adjusting bolts are ensured to be closely attached to the distribution beam, the stress is uniform, and the deformation is prevented; the root of the steel truss is closely attached to the web of the bridge body, so that the problems that a template is unstable and is easy to sink in the previous construction process are solved.
6. The construction method of the invention uses the adjustable device of the lower support of the steel truss girder, thereby greatly reducing the danger coefficient of high-altitude operation, but still needs to tie the safety belt according to the requirement, and makes corresponding protective measures, and when constructing the road-crossing, protective personnel need to be provided.
7. The construction method overcomes the conflict between the existing construction method and a highway and railway dual-purpose bridge girder erection machine, and the highway bridge girder erection machine cannot operate girder erection on the bridge floor after track laying; the phenomenon that the lines of the cast-in-place rear bridge deck fluctuate up and down improves the appearance quality of the bridge deck; secondly, this strutting arrangement installation is simple and easy, reduces the human labor, improves efficiency of construction and economic benefits.
In conclusion, the supporting device is simple in structure, reasonable in design and strong in practicability, can effectively improve the quality, the labor efficiency and the economic benefit in the pouring process, and has wide popularization and application values in the construction of the sound barrier beam cast-in-place bridge deck.
The invention is described in further detail below with reference to the figures and examples.
Drawings
Fig. 1 is a using state diagram of the support device for the cast-in-place bridge deck of the lower support adjustable sound barrier beam of the present invention.
Fig. 2 is an enlarged view of fig. 1 at a.
Fig. 3 is an enlarged view of fig. 1 at B.
Fig. 4 is a schematic structural view of a main support frame unit of the support device for a cast-in-place bridge deck of an under-support adjustable sound barrier beam of the present invention.
Fig. 5 is a top view of a steel truss of the cast-in-place deck slab supporting device of the lower support adjustable sound barrier beam of the present invention.
Fig. 6 is a schematic structural view of an adjusting beam of the support device for a cast-in-place bridge deck of a bottom-support adjustable sound barrier beam according to the present invention.
Fig. 7 is a sectional view of a bearing block of the support device for the cast-in-place bridge deck of the lower support adjustable sound barrier beam of the present invention.
Fig. 8 is a top view of a bearing block of the support device for the cast-in-place bridge deck of the lower support adjustable sound barrier beam of the present invention.
Fig. 9 is a schematic view of a position relationship between two adjacent protective net columns, a temporary protective net between the two protective net columns, and a steel wire rope of the lower-support adjustable sound barrier beam cast-in-situ bridge deck supporting device of the present invention.
Description of reference numerals:
1-steel truss; 2, adjusting a screw rod; 3, fixing the pile;
4, adjusting the cross beam; 5, a bearing block; 5-1-bearing plate;
5-2-legs; 5-3-round hole; 6, distributing beam;
7-finish rolling the deformed steel bar; 8, a protective net upright post; 8-1-protecting the steel wire rope eyelet;
8-2-steel wire rope; 8-3-temporary protective net; 9-bridge beam body;
10-a first lock nut; 11-a second lock nut; 12-a bellows;
and 13, pouring the cast-in-place bridge deck.
Detailed Description
As shown in fig. 1 to 6, the cast-in-place bridge deck supporting device for the lower support adjustable sound barrier beam comprises a plurality of main supporting frame units arranged along the length direction of a bridge body 9 and a distribution beam 6 erected on the main supporting frame units to integrate the main supporting frame units into a whole, wherein each main supporting frame unit comprises a plurality of steel trusses 1 arranged on the upper side wall of the bridge body 9, the steel trusses 1 are arranged at intervals along the length direction of the bridge body 9, the root parts of the steel trusses 1 are tightly attached to the web plate of the bridge body 9, and the inner end parts of the steel trusses 1 are fixed on the side of the bridge body 9 through finish-rolled threaded steel 7; every the equal vertical spud pile 3 that is fixed with of outer tip of steel truss 1, every the top of steel truss 1 is provided with adjusting beam 4, adjusting beam 4's outer end card is in the upper end of the spud pile 3 that corresponds, the upper portion of steel truss 1 is along the vertical a plurality of adjusting screw 2 that are provided with of width direction of bridge girder body 9, and is a plurality of adjusting screw 2 all is located between spud pile 3 and the finish rolling screw-thread steel 7, adjusting screw 2's upper end top is on adjusting beam 4, many distributing beam 6 sets up the top at every steel truss 1 along the length direction of bridge girder body 9.
The main body stress structure is a steel truss 1, the whole-hole beams are arranged along the line direction at intervals of 1700 mm-2000 mm, the steel truss 1 is fixed on a bridge beam body 9 through finish rolling deformed steel bars 7, and a bearing block 5 is arranged on the beam surface of the bridge beam body 9 for fixing.
The steel truss 1 is a channel steel truss, namely the steel truss 1 is formed by assembling and welding channel steel and is a main bearing structure, so that the transverse partition wall is avoided, and the root of the steel truss 1 is closely attached to a beam web.
The adjusting screw rod 2 is made of channel steel with the width of 80mm, the height of 43mm and the thickness of 5mm, the length of an opening at the end part is 700mm, the width of the opening is 50mm, and the opening is clamped on the fixing pile 3 so as to prevent the distribution beam 6 from moving. The adjusting beam 4 is a channel steel beam, the adjusting beam 4 is connected with the steel truss 1 through a phi 30 lead screw, and the height and the level of the adjusting beam 4 are adjusted through the adjusting lead screw 2.
The distributing beam 6 is a square steel beam, namely the distributing beam 6 is made of square steel with the width of 100mm, the height of 50mm and the thickness of 1.5mm, the distributing beam 6 is arranged on the adjusting beam 4, and the distance between the distributing beams 6 is 0.4 m.
The finish-rolled deformed steel bar 7 is the finish-rolled deformed steel bar with the diameter phi 36, and the steel truss 1 is fixed on the side of the bridge body 9.
As shown in fig. 1, 2, 3, 7 and 8, a bearing block 5 is arranged at the upper part of the finish rolling deformed steel bar 7, the bearing block comprises a bearing plate 5-1 and four support legs 5-2, the bearing plate 5-1 is of a cuboid structure, a round hole 5-3 is formed in the center of the bearing plate 5-1, and the four support legs 5-2 are respectively fixed at four corners of the bottom of the bearing plate 5-1.
The bearing block is formed by welding 1 steel plate with the thickness of 20mm and 4 round steels with the diameter of phi 30, a round hole with the diameter of phi 40mm is arranged in the middle of the bearing plate 5-1, and the bearing plate 5-1 is a main bearing block.
As shown in fig. 1, 2 and 3, the upper end of the finish-rolled deformed steel bar 7 penetrates through the circular hole 5-3, the lower end of the finish-rolled deformed steel bar 7 is provided with a first locking nut 10 for locking and fixing the finish-rolled deformed steel bar 7 on the steel truss 1, the upper end of the finish-rolled deformed steel bar 7 is provided with a second locking nut 11 for locking and fixing the bearing block on the bridge beam body 9, the four support legs 5-2 are all supported on the top of the bridge beam body 9, and the second locking nut 11 is located on the top of the bearing plate 5-1.
As shown in FIG. 3, corrugated pipes 12 are sleeved on the outer sides of the supporting legs 5-2 and the finish rolled deformed steel bars 7 and between the top surface of the bridge girder 9 and the bottom surface of the bearing plate 5-1.
As shown in fig. 9, a protective net upright 8 is fixed at the top of the outer end of each steel truss 1, protective steel wire rope holes 8-1 are uniformly formed in the protective net upright 8 along the length direction, a steel wire rope 8-2 penetrates through the protective steel wire rope holes 8-1 corresponding to two adjacent protective net upright 8, and a temporary protective net 8-3 is hung between two adjacent steel wire ropes 8-2.
The protective net stand columns 8 are made of No. 4 angle steel, the bottoms of the protective net stand columns 8 are fixedly connected with the steel truss 1 through screws, the distance between the protective net stand columns 8 is 2m, protective steel wire rope holes 8-1 are drilled in the protective net stand columns 8 every 30cm, four protective steel wire ropes 8-2 are arranged, the steel wire ropes are No. 8 plastic-coated steel wire ropes, and temporary protective nets 8-3 are hung between the steel wire ropes 8-2.
In this embodiment, a plurality of the steel trusses 1 are uniformly arranged at intervals along the length direction of the bridge girder 9.
As shown in fig. 1, 2 and 4, three adjusting screw rods 2 are arranged at the upper part of each steel truss 1, and the three adjusting screw rods 2 are uniformly arranged on a bridge beam body 9.
In this embodiment, the distribution beams 6 are uniformly arranged.
The support device for the cast-in-place bridge deck of the sound barrier beam with the adjustable lower support is used to abut against a beam body, and the bridge deck is fixed by finish-rolled deformed steel bars, so that the support device has the advantages of stability and firmness. The method has wide popularization and application values in the construction of the sound barrier beam cast-in-place bridge deck. Meanwhile, the supporting device is simple and convenient to install, the control of the whole lines of the sound barrier beam cast-in-place bridge deck is realized, the control does not conflict with a bridge girder erection machine, the pouring speed can be effectively improved, the quality of the cast-in-place bridge deck is improved, the economic benefit is improved, and the cost is saved. In addition, compared with the prior cantilever type structure, the lower supporting type supporting device is not firm, and the cantilever type structure is heavy and inconvenient to install; this kind of installation of lower support formula strutting arrangement is easier, and it is also faster to be under construction moreover, can improve the efficiency of construction like this.
The cast-in-place construction method of the cast-in-place bridge deck of the sound barrier beam shown in fig. 1 comprises the following steps:
step one, marking the position of an opening on the outer side of a bridge body 9 with pouring conditions in advance, and drilling a round hole in the marked position of the opening by using a water drill; if the position of the round hole is coincident with the position of the embedded steel bar on the bridge girder body 9, the position of the round hole is adjusted, and the embedded steel bar on the bridge girder body 9 is not damaged;
the hole opening position is generally at a position 325mm away from the outer side of the bridge beam body 9, the diameter of the round hole is generally phi 40, the distance from the round hole at the end part to the end of the bridge beam body 9 (the bridge beam body 9 is a precast beam formed in a precast mode) is 600mm, and the distance between every two adjacent round holes is 1700 mm-2000 mm.
Step two, hoisting the steel truss 1 to the outer side of the bridge body 9 by using a 1T hoisting machine, placing the position of the bearing block 5, and installing corrugated pipes 12 at four support legs 5-2 of the bearing block 5 and the round hole drilled in the step one;
thirdly, adjusting the position of the steel truss 1 until the root of the steel truss 1 is attached to and perpendicular to the web of the bridge girder 9, enabling the finish-rolled deformed steel bar 7 to penetrate through the bottom of the circular hole, fixing the bottom of the finish-rolled deformed steel bar 7 and the steel truss 1 through a first locking nut 10, and locking and fixing the bearing block on the bridge girder 9 through a second locking nut 11;
fourthly, clamping an opening at the end part of the adjusting cross beam 4 at the upper end of the fixed pile 3 to prevent the adjusting cross beam 4 from moving, and enabling the upper end of the adjusting screw rod 2 to be propped against the bottom of the adjusting cross beam 4 to finish the assembly of each main support frame unit;
and step two to step four, the main support frame unit is installed, the installation process is completed by the cooperation of three operators, one operator fastens a safety belt, the steel truss 1 is adjusted outside the bridge body 9, the other operator controls the lifting of the 1T lifting machine, and the other operator installs the specially-made bearing block 5 and the finish rolling deformed steel bar 7. The personnel of installation load block 5 put the position in advance, lay the bellows in four fulcrums and hole middle part position department, make things convenient for later stage to demolish, repair. And (3) after the root of the steel truss 1 is attached to the web plate of the bridge girder body 9 and is adjusted to be vertical, the finish-rolled deformed steel bar penetrates through the hole and is fixed through a matched nut, and after the bottom is fixed, bridge deck operators are fixed through a wrench.
Fifthly, mounting the distribution beams 6 after the main support frame unit is mounted, fixedly connecting the bamboo plywood bottom die to the upper parts of the distribution beams 6 by an operator after the distribution beams 6 are mounted, adjusting the flatness of the bamboo plywood bottom die through the adjusting screw rod 2 after each distribution beam 6 is mounted, and mounting one adjustment block;
the spacing between the distribution beams 6 is usually 0.4m, the thickness of the bottom die of the bamboo plywood is usually 15mm, and operators need to fasten safety belts when adjusting the flatness of the bottom die of the bamboo plywood.
And step six, after the installation of the bottom mould of the bamboo plywood is finished, installing an external mould and an internal mould, finally installing a temporary protective net 8-3 on the outer side of the steel truss 1, and pouring and molding the bridge deck after the installation is finished.
The bottom die of the bamboo plywood can adopt high-quality bamboo plywood, and the length of the high-quality bamboo plywood is 1.2 meters. The side forms can adopt the customization steel mould, and the side forms is 2m long steel system model, fixes out the side forms position at the bridge both ends before the installation, adopts the mode of acting as go-between to carry out assistance-localization real-time, ensures that the model lines are smooth-going. Side forms bottom and bamboo plywood die block carry out fixed connection through the bolt, and the back is accomplished in the installation, installs fixed U type bolt, and U type bolt mounted position needs to accord with the designing requirement regulation, and the installation of centre form is carried out to the bolt installation back, fixes through the reinforcing bar between interior outer mould and the centre form, prevents to pour in-process model and runs the position. 13, the cast-in-place bridge deck slab is poured, and the line property is good after construction.
The above description is only a preferred embodiment of the present invention, and is not intended to limit the present invention, and all simple modifications, changes and equivalent structural changes made to the above embodiment according to the technical spirit of the present invention still fall within the protection scope of the technical solution of the present invention.
Claims (10)
1. The utility model provides a cast-in-place decking strutting arrangement of sound barrier roof beam with adjustable hold in palm down which characterized in that: the steel truss structure comprises a plurality of main support frame units arranged along the length direction of a bridge body (9) and a distribution beam (6) arranged on the main support frame units to integrate the main support frame units, wherein each main support frame unit comprises a plurality of steel trusses (1) arranged on the side wall of the upper part of the bridge body (9), the steel trusses (1) are arranged at intervals along the length direction of the bridge body (9), the root parts of the steel trusses (1) are tightly attached to a web plate of the bridge body (9), and the inner end parts of the steel trusses (1) are fixed on the side of the bridge body (9) through finish-rolled threaded steel (7); every the equal vertical spud pile (3) that is fixed with of outer tip of steel truss (1), every the top of steel truss (1) is provided with adjusts crossbeam (4), the outer end card of adjusting crossbeam (4) is in the upper end of corresponding spud pile (3), the upper portion of steel truss (1) is along the vertical a plurality of adjusting screw (2) that are provided with of width direction of bridge girder body (9), and is a plurality of adjusting screw (2) all are located between spud pile (3) and finish rolling screw-thread steel (7), the upper end top of adjusting screw (2) is on adjusting crossbeam (4), and is many distributing beam (6) are taken along the length direction of bridge girder body (9) and are established at the top of every steel truss (1).
2. The lower support adjustable sound barrier beam cast-in-place bridge deck supporting device according to claim 1, wherein: the upper portion of the finish rolling deformed steel bar (7) is provided with a bearing block (5), the bearing block comprises a bearing plate (5-1) and four supporting legs (5-2), the bearing plate (5-1) is of a cuboid structure, a round hole (5-3) is formed in the center of the bearing plate (5-1), and the four supporting legs (5-2) are respectively fixed on four corners of the bottom of the bearing plate (5-1).
3. The lower support adjustable sound barrier beam cast-in-place bridge deck supporting device according to claim 2, wherein: the upper end of the finish rolling deformed steel bar (7) penetrates through the round hole (5-3), the lower end of the finish rolling deformed steel bar (7) is provided with a first locking nut (10) for locking and fixing the finish rolling deformed steel bar (7) on the steel truss (1), the upper end of the finish rolling deformed steel bar (7) is provided with a second locking nut (11) for locking and fixing the bearing block on the bridge beam body (9), the four supporting legs (5-2) are all supported at the top of the bridge beam body (9), and the second locking nut (11) is located at the top of the bearing plate (5-1).
4. The lower support adjustable sound barrier beam cast-in-place bridge deck supporting device according to claim 2, wherein: corrugated pipes (12) are sleeved on the outer sides of the supporting legs (5-2) and the outer sides of the finish-rolled deformed steel bars (7) and are positioned between the top surface of the bridge body (9) and the bottom surface of the bearing plate (5-1).
5. The lower support adjustable sound barrier beam cast-in-place bridge deck supporting device according to claim 1, wherein: the top of the outer end of each steel truss (1) is fixed with a protective net upright post (8), protective steel wire rope holes (8-1) are uniformly formed in the protective net upright posts (8) along the length direction, steel wire ropes (8-2) penetrate between the corresponding protective steel wire rope holes (8-1) in every two adjacent protective net upright posts (8), and a temporary protective net (8-3) is hung between every two adjacent steel wire ropes (8-2).
6. The lower support adjustable sound barrier beam cast-in-place bridge deck supporting device according to claim 1, wherein: the steel trusses (1) are uniformly distributed at intervals along the length direction of the bridge beam body (9).
7. The lower support adjustable sound barrier beam cast-in-place bridge deck supporting device according to claim 1, wherein: each upper portion of the steel truss (1) is provided with three adjusting screw rods (2), and the three adjusting screw rods (2) are uniformly arranged on a bridge body (9).
8. The lower support adjustable sound barrier beam cast-in-place bridge deck supporting device according to claim 1, wherein: the distribution beams (6) are uniformly arranged.
9. The lower support adjustable sound barrier beam cast-in-place bridge deck supporting device according to claim 1, wherein: the steel truss (1) is a channel steel truss, the adjusting beam (4) is a channel steel beam, and the distributing beam (6) is a square steel beam.
10. A cast-in-place construction method for a cast-in-place bridge deck of a sound barrier beam by using the apparatus of claim 4, comprising the steps of:
firstly, marking the position of an opening on the outer side of a bridge body (9) with pouring conditions in advance, and drilling a round hole in the marked position of the opening by using a water drill; if the position of the round hole is coincident with the position of the embedded steel bar on the bridge girder body (9), the position of the round hole is adjusted, and the embedded steel bar on the bridge girder body (9) is not damaged;
secondly, hoisting the steel truss (1) to the outer side of a bridge body (9) by using a 1T hoisting machine, placing the position of a bearing block (5), and installing corrugated pipes (12) at four support legs (5-2) of the bearing block (5) and the round hole drilled in the step one;
thirdly, adjusting the position of the steel truss (1) until the root of the steel truss (1) is attached to and perpendicular to a web plate of the bridge girder body (9), enabling the finish-rolled deformed steel bar (7) to penetrate through the bottom of the round hole, fixing the bottom of the finish-rolled deformed steel bar (7) and the steel truss (1) through a first locking nut (10), and locking and fixing the bearing block on the bridge girder body (9) through a second locking nut (11);
fourthly, clamping an opening at the end part of the adjusting cross beam (4) at the upper end of the fixed pile (3) to prevent the adjusting cross beam (4) from moving, and enabling the upper end of the adjusting lead screw (2) to be propped against the bottom of the adjusting cross beam (4) to complete the assembly of each main support frame unit;
fifthly, mounting distribution beams (6) after the main support frame unit is mounted, fixedly connecting a bamboo plywood bottom die to the upper parts of the distribution beams (6) by an operator after the distribution beams (6) are mounted, and adjusting the flatness of the bamboo plywood bottom die by adjusting a lead screw (2) after each distribution beam (6) is mounted, and mounting one adjustment beam;
and step six, after the installation of the bottom die of the bamboo plywood is finished, installing an outer die and an inner die, finally installing a temporary protective net (8-3) on the outer side of the steel truss (1), and pouring and molding the bridge deck after the installation is finished.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202011516308.3A CN112609588A (en) | 2020-12-21 | 2020-12-21 | Lower-support adjustable sound barrier beam cast-in-situ bridge deck supporting device and cast-in-situ construction method |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202011516308.3A CN112609588A (en) | 2020-12-21 | 2020-12-21 | Lower-support adjustable sound barrier beam cast-in-situ bridge deck supporting device and cast-in-situ construction method |
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| CN112609588A true CN112609588A (en) | 2021-04-06 |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN115491988A (en) * | 2022-09-23 | 2022-12-20 | 中铁六局集团有限公司 | Railway sound barrier beam bridge deck slab underpinning type support cast-in-situ construction method |
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2020
- 2020-12-21 CN CN202011516308.3A patent/CN112609588A/en active Pending
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN115491988A (en) * | 2022-09-23 | 2022-12-20 | 中铁六局集团有限公司 | Railway sound barrier beam bridge deck slab underpinning type support cast-in-situ construction method |
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