CN114808746B - Cast-in-situ box girder top plate vibrating and leveling integrated device and construction method thereof - Google Patents
Cast-in-situ box girder top plate vibrating and leveling integrated device and construction method thereof Download PDFInfo
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- CN114808746B CN114808746B CN202210631135.2A CN202210631135A CN114808746B CN 114808746 B CN114808746 B CN 114808746B CN 202210631135 A CN202210631135 A CN 202210631135A CN 114808746 B CN114808746 B CN 114808746B
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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
- 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
- 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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- On-Site Construction Work That Accompanies The Preparation And Application Of Concrete (AREA)
Abstract
The invention discloses a cast-in-situ box girder top plate vibrating and leveling integrated device, which comprises a longitudinal moving track, front and rear supporting beams, a transverse moving track, a vibrating mechanism, a leveling beam and an automatic leveling machine, wherein the longitudinal moving track is arranged on the front and rear supporting beams; the two longitudinal moving tracks are paved on two sides of the steel bar framework of the beam to be poured along the bridge direction, displacement sensors are arranged on the longitudinal moving tracks, the front and rear supporting beam cross bridges are paved on the longitudinal moving tracks, and the two transverse moving tracks are paved on the front and rear supporting beams; the vibrating mechanism is movably hung on the transverse moving track; the leveling beam is fixed at the bottom of the front supporting beam; the automatic leveling machine is fixed at the bottom of the rear supporting beam, and can adjust the elevation in millimeter level according to the displacement sensor on the longitudinal movement track, so as to control the flatness of the beam surface. The invention integrates concrete vibrating and leveling, has high mechanization and automation degree, improves the construction efficiency, has better construction quality and meets the development requirement of industrial construction.
Description
Technical Field
The invention relates to the field of vibration leveling construction of cast-in-situ box girders. More particularly, the invention relates to a cast-in-situ box girder top plate vibrating and leveling integrated device and a construction method thereof.
Background
At present, the cast-in-situ box girder top plate concrete construction mostly adopts manual hand-held inserted vibrating bars to vibrate mainly, and the leveling Liang Fu is performed manually. The manual operation is taken as the main part, phenomena such as leakage vibration, lack vibration, excessive vibration, steel bar touching and the like are difficult to avoid, and the construction quality is difficult to guarantee; the vibration and leveling construction operation is independent, the mechanization and automation degree is low, the construction efficiency is low, and the industrial construction requirement is difficult to meet; the manual input amount is large, the field management difficulty is high, and the construction cost is high.
Disclosure of Invention
To achieve these objects and other advantages and in accordance with the purpose of the invention, a cast-in-place box girder top plate vibrating and leveling integrated device is provided, which comprises a longitudinal moving track, a transverse moving track and a vibrating mechanism;
the two longitudinal moving rails are respectively erected on two sides of the beam to be poured along the bridge direction, the two transverse moving rails are transversely and movably erected on the longitudinal moving rails, and the transverse moving rails can move along the length direction of the longitudinal moving rails; the vibrating mechanism is movably hung on the transverse moving track.
According to a preferred embodiment of the invention, the front support beam and the rear support beam are vertically arranged on two longitudinal moving rails, the front support beam and the rear support beam can move along the length direction of the longitudinal moving rails, and the two transverse moving rails are respectively coaxially arranged at the top ends of the front support beam and the rear support beam.
According to a preferred embodiment of the invention, the lower end of the front supporting beam is connected with a leveling beam, the lower end of the rear supporting beam is connected with an automatic leveling machine, the bottom end of the leveling beam is provided with a horizontal leveling surface, the bottom end of the automatic leveling machine is provided with a horizontal leveling surface, the leveling surface of the leveling beam is higher than the leveling surface of the automatic leveling machine, and the automatic leveling machine can be lifted, and the lifting precision of the automatic leveling machine reaches millimeter level.
According to a preferred embodiment of the invention, the vibrating mechanism comprises a cover plate, lifting supporting rods and vibrating rods, wherein two ends of the cover plate are erected on the front supporting beam and the rear supporting beam through the lifting supporting rods, the lifting supporting rods can move along a transverse moving track on the front supporting beam/the rear supporting beam, and a plurality of vibrating rods are simultaneously and vertically connected below the cover plate.
According to a preferred embodiment of the present invention, the vibrating mechanism further includes a vertical rod, a large sliding rod, a small sliding rod, an upper cross rod, and a lower cross rod, wherein the upper cross rod is connected below the cover plate through a plurality of vertical rods, at least one small sliding rod and a large sliding rod are vertically arranged on the upper cross rod, vibrating rods are connected below the small sliding rod and the large sliding rod, and the small sliding rod and the large sliding rod are also simultaneously installed on the same lower cross rod.
According to a preferred embodiment of the invention, the vibrating bars are connected to a connecting plate at the same time, and the connecting plate is connected to the lower end of the small sliding rod or the large sliding rod.
According to a preferred embodiment of the present invention, the outer side of the front support beam or the rear support beam is horizontally provided with an auxiliary platform floor, on which an auxiliary platform rail is also vertically provided.
According to a preferred embodiment of the invention, the height of the lifting stay is adjustable.
According to a preferred embodiment of the invention, the two ends of the longitudinally moving rail are provided with locking means.
According to a preferred embodiment of the present invention, the bottom of the lifting brace is connected to a supporting beam, and the bottom of the supporting beam is provided with rollers to move along the traversing rail.
According to a preferred embodiment of the invention, a plurality of displacement sensors are arranged on the longitudinal movement track at intervals so as to monitor the vertical deformation of the longitudinal movement track.
On the other hand, a preferred embodiment of the invention provides a construction method of a cast-in-situ box girder top plate vibrating and leveling integrated device, which comprises the following steps:
s1, pouring concrete in a beam to be poured area, and controlling a front supporting beam and a rear supporting beam to slide on a longitudinally moving track along a bridge direction by a standard width, wherein the standard width is the distance between the front supporting beam and the rear supporting beam;
s2, in the sliding process, the leveling beam attached to the bottom of the front supporting beam can coarsely level the poured concrete; after sliding in place, vibrating bars on the vibrating mechanism vibrate the roughly leveled concrete; the automatic leveling machine attached to the bottom of the rear supporting beam levels the vibrated concrete, and in addition, workers can stand on the bottom plate of the auxiliary platform to trim the local defect area;
step S3, after the vibration leveling of one standard area is finished, the supporting cross beam transversely moves along the transverse moving track, the whole vibration mechanism is driven to the next standard area, and the step S2 is repeated to realize the vibration leveling in the standard width area;
and S4, repeating the steps S1-S3 until all the concrete in the beam area to be poured is vibrated and leveled.
The invention at least comprises the following beneficial effects: the invention provides a vibration leveling integrated device for a top plate of a cast-in-situ box girder, which improves the mechanization and automation degree of the concrete construction of the cast-in-situ box girder, improves the construction quality and reduces the labor cost.
(1) The cast-in-situ box girder top plate vibrating and leveling integrated device provided by the invention integrates concrete vibrating and leveling, has high mechanization and automation degree, improves the construction efficiency, and meets the development requirements of industrial construction.
(2) The vibration and leveling integrated device for the cast-in-situ box girder top plate provided by the invention saves a great deal of labor force, thereby reducing the field management risk and saving the construction cost.
(3) The vibration and leveling integrated device for the cast-in-situ box girder top plate provided by the invention has the advantages that the vibration frequency, the vibration time, the insertion depth of the vibration rod, the insertion and extraction speed of the vibration rod, the walking step distance and other parameters are controllable, the problems of vibration leakage, vibration lack, vibration exceeding, steel bar touching and the like caused by manpower can be avoided, and the construction quality is better and controllable.
Additional advantages, objects, and features of the invention will be set forth in part in the description which follows and in part will become apparent to those having ordinary skill in the art upon examination of the following or may be learned from practice of the invention.
Drawings
Fig. 1 is a working schematic diagram of a cast-in-situ box girder top plate vibrating and leveling integrated device.
Fig. 2 is a side view of the cast-in-place box girder top plate vibrating and leveling integrated device in the invention.
Fig. 3 is a front view of the cast-in-situ box girder top plate vibrating and leveling integrated device in the invention.
Detailed Description
The present invention is described in further detail below with reference to the drawings to enable those skilled in the art to practice the invention by referring to the description.
The following description is presented to enable one of ordinary skill in the art to make and use the invention. The preferred embodiments in the following description are by way of example only and other obvious variations will occur to those skilled in the art. The basic principles of the invention defined in the following description may be applied to other embodiments, variations, modifications, equivalents, and other technical solutions without departing from the spirit and scope of the invention.
It will be appreciated by those skilled in the art that in the present disclosure, the terms "longitudinal," "transverse," "upper," "lower," "front," "rear," "left," "right," "vertical," "horizontal," "top," "bottom," "inner," "outer," etc. refer to an orientation or positional relationship based on that shown in the drawings, which is merely for convenience of description and to simplify the description, and do not indicate or imply that the apparatus or elements referred to must have a particular orientation, be constructed and operated in a particular orientation, and therefore the above terms should not be construed as limiting the present invention.
It will be understood that the terms "a" and "an" should be interpreted as referring to "at least one" or "one or more," i.e., in one embodiment, the number of elements may be one, while in another embodiment, the number of elements may be plural, and the term "a" should not be interpreted as limiting the number.
1-3, the integrated device for vibrating and leveling the top plate of the cast-in-situ box girder comprises a longitudinal moving track 10, a transverse moving track 20 and a vibrating mechanism 30;
the two longitudinal moving rails 10 are respectively erected on two sides of the beam 40 to be poured along the bridge direction, the two transverse moving rails 20 are both transversely and movably erected on the longitudinal moving rails 10, and the transverse moving rails 20 can move along the length direction of the longitudinal moving rails 10; the vibrating mechanism 30 is movably hung on the traversing rail 20 and moves along the length direction of the traversing rail. The front support beam 50 and the rear support beam 60 are respectively and vertically arranged on the two longitudinal moving rails 10, the front support beam 50 and the rear support beam 60 are both movably arranged on the longitudinal moving rails 10 and can both move along the length direction of the longitudinal moving rails 10, and the two transverse moving rails 20 are respectively and coaxially arranged at the top ends of the front support beam 50 and the rear support beam 60. The lower end of the front support beam 50 is connected with a leveling beam 80, the lower end of the rear support beam 60 is connected with an automatic leveling machine 70, the bottom end of the leveling beam 80 is provided with a horizontal leveling surface, the bottom end of the automatic leveling machine 70 is provided with a horizontal leveling surface, and the leveling surface of the leveling beam 80 is higher than the leveling surface of the automatic leveling machine 70. The automatic leveling machine can be lifted, the lifting precision of the automatic leveling machine reaches millimeter level, and the vibrating mechanism 30 moves from the poured beam 120 to the non-poured beam 40.
The vibrating mechanism 30 includes a cover plate 310, lifting support rods 320, and vibrating bars 330, two ends of the cover plate 310 are erected on the front support beam 50 and the rear support beam 60 through the lifting support rods 320, and the lifting support rods 320 can move along the traversing rails 20 on the front support beam 50/the rear support beam 60, and a plurality of vibrating bars 330 are simultaneously and vertically connected below the cover plate 310. The height of the lifting brace 320 is adjustable. Thereby realizing the adjustment of the vibration height of the whole vibration mechanism, in particular to the height adjustment of the lifting supporting rod 320, thereby driving the height adjustment of the vibration rod 330, and being suitable for different construction site conditions.
The embodiment specifically provides a concrete structure of a vibrating mechanism, the vibrating mechanism 30 further includes a vertical rod 340, a large slide rod 350, a small slide rod 360, an upper cross rod 370, and a lower cross rod 380, wherein the upper cross rod 370 is connected below the cover plate 310 through a plurality of vertical rods 340, at least one small slide rod 360 and a large slide rod 350 are vertically arranged on the upper cross rod 370, and vibrating rods 330 are connected below the small slide rod 360 and the large slide rod 350, and the small slide rod 360 and the large slide rod 350 are also simultaneously installed on the same lower cross rod 380.
In one embodiment, the number of vibrating bars 330 is several, which are simultaneously connected to the connecting plate 390, and the connecting plate 390 is connected to the lower end of the small sliding rod 360 or the large sliding rod 350, where a plurality of vibrating bars 330 are adopted, so as to realize a wide range of expansion of the vibrating area.
Considering that the leveling machine is sometimes damaged during actual construction and the leveling effect is poor, or other sudden accidents are caused, and then the leveling machine needs to be manually remedied, in order to achieve the purpose, an embodiment provides a technical scheme that the front support beam 50 or the outer side of the rear support beam 60 is horizontally provided with an auxiliary platform bottom plate 91, and an auxiliary platform guard rail 90 is further vertically arranged thereon, so that a constructor can stand on the auxiliary platform bottom plate 91 for construction, wherein the auxiliary platform guard rail 90 is used for protecting the constructor.
In one embodiment, the lifting brace 320 is connected to a supporting beam 300, and the bottom of the supporting beam 300 is provided with rollers 110 to move along the traversing rail 20, so as to support the transverse movement of the beam 300, thereby driving the transverse movement of the whole vibrating mechanism.
Considering that the longitudinal moving rail 10 is placed on the box girder reinforcement cage or the guardrail reinforcement during construction, because the rigidity of the box girder reinforcement cage is small, long-term dead weight compression and external compression can lead to deformation of the reinforcement cage, and the longitudinal moving rail can have downward displacement, especially in the case of placing the guardrail reinforcement, under dead weight compression and external compression, the guardrail reinforcement is very easy to move downwards and deform, so as to drive the front supporting beam 50 and the rear supporting beam 60 to move downwards, and the automatic leveling machine 70 connected to the lower end of the rear supporting beam 60 can also have a downward displacement along with the longitudinal moving rail, thus greatly compromising the leveling effect, and in order to avoid the problem, one embodiment of the present invention proposes the following technical scheme: and a plurality of displacement sensors are arranged on the longitudinal displacement track at intervals so as to monitor the vertical deformation of the longitudinal displacement track, and after the longitudinal displacement deformation of the longitudinal displacement track is detected, the elevation of the automatic leveling machine is adjusted according to the deformation quantity of the longitudinal displacement track, so that the flatness of the beam surface is controlled. When detecting the reinforcing bar deformation, according to the reinforcing bar deformation of monitoring, carry out altitude mixture control to automatic evener, carry out the elevation adjustment.
The construction method of the cast-in-situ box girder top plate vibrating and leveling integrated device specifically comprises the following steps:
s1, pouring concrete in a beam to be poured area, and controlling a front supporting beam 50 and a rear supporting beam 60 to slide on a longitudinal moving track 10 along a bridge direction by a standard width, wherein the standard width is the distance between the front supporting beam 50 and the rear supporting beam 60;
in the sliding process, the leveling beam 80 attached to the bottom of the front supporting beam 50 may perform rough leveling on the poured concrete; after the concrete is slipped into place, the concrete which is roughly leveled is vibrated by a vibrating rod 330 on the vibrating mechanism 30; the automatic leveling machine 70 attached to the bottom of the rear supporting beam 60 levels the vibrated concrete, and in addition, a worker can stand on the auxiliary platform floor 91 to repair a partial defective area;
step S3, after the vibrating and leveling of one standard area is finished, the supporting beam 300 transversely moves along the transverse moving track 20, the whole vibrating mechanism is driven to the next standard area, and the step S2 is repeated to realize vibrating and leveling in the standard width area;
and S4, repeating the steps S1-S3 until all the concrete in the beam area to be poured is vibrated and leveled.
It should be noted that, in the whole construction process, the front support beam 50 and the rear support beam 60 slide on the longitudinal moving track always synchronously, and the distance between the front support beam 50 and the rear support beam 60 is a multiple of the distance between the two holes of the reinforcing steel bars, so as to avoid the vibrating bars touching the reinforcing steel bars in the vibrating process, and the distance between the support beam and the transverse moving track is a multiple of the distance between the holes of the reinforcing steel bars, so that the vibrating bars touching the reinforcing steel bars in the vibrating process are effectively avoided.
Although embodiments of the present invention have been disclosed above, it is not limited to the details and embodiments shown and described, it is well suited to various fields of use for which the invention would be readily apparent to those skilled in the art, and accordingly, the invention is not limited to the specific details and illustrations shown and described herein, without departing from the general concepts defined in the claims and their equivalents.
Claims (6)
1. The vibration and leveling integrated device for the cast-in-situ box girder top plate is characterized by comprising a longitudinal moving track, a transverse moving track and a vibration mechanism;
the two longitudinal moving rails are respectively erected on two sides of the beam to be poured along the bridge direction, the two transverse moving rails are transversely and movably erected on the longitudinal moving rails, and the transverse moving rails can move along the length direction of the longitudinal moving rails; the vibrating mechanism is movably hung on the transverse moving track;
the front support beam and the rear support beam are respectively and vertically arranged on two longitudinal moving rails, the front support beam and the rear support beam can both move along the length direction of the longitudinal moving rails, and the two transverse moving rails are respectively and coaxially placed at the top ends of the front support beam and the rear support beam;
the lower end of the front supporting beam is connected with a leveling beam, the lower end of the rear supporting beam is connected with an automatic leveling machine, the bottom end of the leveling beam is provided with a horizontal leveling surface, the bottom end of the automatic leveling machine is provided with a horizontal leveling surface, the leveling surface of the leveling beam is higher than that of the automatic leveling machine, the automatic leveling machine can be lifted, and the lifting precision of the automatic leveling machine reaches millimeter level;
an auxiliary platform bottom plate is horizontally arranged on the outer side of the front supporting beam or the rear supporting beam, and an auxiliary platform guardrail is vertically arranged on the auxiliary platform bottom plate;
the longitudinal moving track is arranged on a box girder steel reinforcement framework or guardrail steel bars;
a plurality of displacement sensors are arranged on the longitudinal movement track at intervals so as to monitor the vertical deformation of the longitudinal movement track;
after the longitudinal displacement deformation of the longitudinal displacement rail is detected, the elevation of the automatic leveling machine is adjusted according to the deformation quantity of the longitudinal displacement rail, so that the flatness of the beam surface is controlled, and when the deformation of the steel bars is detected, the height of the automatic leveling machine is adjusted according to the monitored deformation of the guardrail steel bars, so that the elevation is adjusted;
the vibrating mechanism is positioned between the front support beam and the rear support beam.
2. The integrated vibrating and leveling device for the top plate of the cast-in-situ box girder according to claim 1, wherein the vibrating mechanism comprises a cover plate, lifting support rods and vibrating bars, two ends of the cover plate are erected on the front support beam and the rear support beam through the lifting support rods, the lifting support rods can move along a traversing rail on the front support beam/the rear support beam, and a plurality of vibrating bars are simultaneously and vertically connected below the cover plate;
the height of the lifting supporting rod is adjustable;
the bottom of the lifting stay bar is connected with a supporting beam, and the bottom of the supporting beam is provided with rollers so as to move along the transverse moving track.
3. The integrated vibrating and leveling device for the top plate of the cast-in-situ box girder according to claim 2, wherein the vibrating mechanism further comprises a vertical rod, a large sliding rod, a small sliding rod, an upper transverse rod and a lower transverse rod, wherein the upper transverse rod is connected below the cover plate through a plurality of vertical rods, at least one small sliding rod and a large sliding rod are vertically arranged on the upper transverse rod, vibrating rods are connected below the small sliding rod and the large sliding rod, and the small sliding rod and the large sliding rod are simultaneously installed on the same lower transverse rod.
4. The integrated vibrating and leveling device for the top plate of the cast-in-situ box girder according to claim 3, wherein a plurality of vibrating rods are simultaneously connected to a connecting plate, and the connecting plate is connected to the lower end of a small sliding rod or a large sliding rod.
5. The integrated vibrating and leveling device for the top plate of the cast-in-situ box girder according to claim 3, wherein locking devices are arranged at two ends of the longitudinal moving track.
6. A construction method using the cast-in-situ box girder top plate vibrating and leveling integrated device as claimed in any one of claims 1 to 5, comprising the following steps:
s1, pouring concrete in a beam to be poured area, and controlling a front supporting beam and a rear supporting beam to slide on a longitudinally moving track along a bridge direction by a standard width, wherein the standard width is the distance between the front supporting beam and the rear supporting beam;
s2, in the sliding process, the leveling beam attached to the bottom of the front supporting beam can coarsely level the poured concrete; after sliding in place, vibrating bars on the vibrating mechanism vibrate the roughly leveled concrete; the automatic leveling machine attached to the bottom of the rear supporting beam levels the vibrated concrete, and in addition, workers can stand on the bottom plate of the auxiliary platform to trim the local defect area;
step S3, after the vibration leveling of one standard area is finished, the supporting cross beam transversely moves along the transverse moving track, the whole vibration mechanism is driven to the next standard area, and the step S2 is repeated to realize the vibration leveling in the standard width area;
and S4, repeating the steps S1-S3 until all the concrete in the beam area to be poured is vibrated and leveled.
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| CN202210631135.2A CN114808746B (en) | 2022-06-06 | 2022-06-06 | Cast-in-situ box girder top plate vibrating and leveling integrated device and construction method thereof |
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| CN202210631135.2A CN114808746B (en) | 2022-06-06 | 2022-06-06 | Cast-in-situ box girder top plate vibrating and leveling integrated device and construction method thereof |
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| EP2366832B1 (en) * | 2010-03-18 | 2015-09-23 | Joseph Vögele AG | Method and paver for producing a compacted paved surface |
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| CN212477341U (en) * | 2020-04-30 | 2021-02-05 | 孝感雄坤隧道装备有限公司 | Self-propelled concrete laser leveling machine for tunnel construction |
| CN111455864A (en) * | 2020-05-18 | 2020-07-28 | 中交二航局第四工程有限公司安徽混凝土装配化构件分公司 | Construction method for transverse wet joint of prefabricated bridge deck factory |
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| CN205934612U (en) * | 2016-08-04 | 2017-02-08 | 中铁十七局集团第三工程有限公司 | Leveling device vibrates |
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| CN210414902U (en) * | 2019-06-30 | 2020-04-28 | 重庆大业新型建材集团有限公司 | Movable vibrating device |
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