CN110029585A - A kind of device and application method for precast segment assembly straight bridge alignment control - Google Patents
A kind of device and application method for precast segment assembly straight bridge alignment control Download PDFInfo
- Publication number
- CN110029585A CN110029585A CN201910435115.6A CN201910435115A CN110029585A CN 110029585 A CN110029585 A CN 110029585A CN 201910435115 A CN201910435115 A CN 201910435115A CN 110029585 A CN110029585 A CN 110029585A
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- prefabricated subsection
- place
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- 238000000034 method Methods 0.000 title claims abstract description 21
- 229920003229 poly(methyl methacrylate) Polymers 0.000 claims abstract description 53
- 239000004926 polymethyl methacrylate Substances 0.000 claims abstract description 53
- 229910000831 Steel Inorganic materials 0.000 claims abstract description 31
- 239000010959 steel Substances 0.000 claims abstract description 31
- 238000009434 installation Methods 0.000 claims abstract description 18
- 238000010276 construction Methods 0.000 claims abstract description 17
- 239000003292 glue Substances 0.000 claims description 11
- 239000011521 glass Substances 0.000 claims description 8
- 239000007787 solid Substances 0.000 claims description 3
- 238000003466 welding Methods 0.000 claims description 3
- 239000011324 bead Substances 0.000 claims 1
- 238000005096 rolling process Methods 0.000 claims 1
- 238000005259 measurement Methods 0.000 abstract description 9
- 238000006243 chemical reaction Methods 0.000 abstract description 4
- 230000008901 benefit Effects 0.000 description 3
- 238000010586 diagram Methods 0.000 description 2
- 230000008569 process Effects 0.000 description 2
- 230000009466 transformation Effects 0.000 description 2
- 230000015572 biosynthetic process Effects 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 230000006872 improvement Effects 0.000 description 1
- 238000007689 inspection Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000003287 optical effect Effects 0.000 description 1
- 239000011178 precast concrete Substances 0.000 description 1
- 238000009417 prefabrication Methods 0.000 description 1
- 230000004224 protection Effects 0.000 description 1
Classifications
-
- 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
Abstract
The present invention relates to a kind of devices for precast segment assembly straight bridge alignment control, it includes the first fixed device, the laser emitter on the first fixed device, the second fixed device, the first poly (methyl methacrylate) plate on the second fixed device, first fixed device includes the first fixed plate, the first steel pole, the first annulus, and the second fixed device is the second poly (methyl methacrylate) plate.The application method of the device be be located at pier location cast-in-place segment on install laser emitter, adjustment laser emitter angle, be located at spanning position prefabricated subsection on be equipped with the first poly (methyl methacrylate) plate, comparison luminous point coordinate and laser emitter coordinate, complete installation.The present invention need not be omitted the measurement and conversion work to six anchor points above segment, accelerate speed of application, reduce the labour workload of survey crew, reduce the time cost and human cost of bridge construction by instruments such as total station and levels.
Description
Technical field
The present invention relates to technical field of bridge construction, are used for the linear control of precast segment assembly straight bridge more particularly to one kind
The device and application method of system.
Background technique
Segment girder precast assembling arrangement and method for construction is a kind of technique applied to bridge construction, and Construction Principle is as follows:
Whole bridge body is transversely cut (i.e. perpendicular to the direction of bridge longitudinal axis) first, bridge is divided into several beam sections,
Pier top be 0# block beam sections, then along bridge longitudinal axis, since the segment 0#, two sides be followed successively by the segment 1#, the segment 2#,
Segment 3# etc..Wherein 0# block beam sections are cast-in-place, are located at bridge pier, other beam sections are prefabrication, are located at spanning.It will be proposed
The design coordinate assignment of bridge, conversion become the Three dimensions control coordinate of each beam sections, by measurement tower and right in precast plant
The equipment such as quasi- tower, the upper surface on prefabricated subsection installs 6 anchor points and controls coordinate with corresponding its, so that beam sections be made
It completes.
At the construction field (site), bridge pier is built first, then 0# block beam sections are completed using cast-in-place mode in pier top, keeps the two right
It connects.Then with the extraordinary bridge formation machine equipment such as gantry crane, the lifting and examination for symmetrically completing left and right double width 1# block prefabricated subsection are spelled, and
The coordinate and elevation of live total station and the level measurement anchor point of precast segmental beam upper surface 6, check whether it is setting
It counts within the error range allowed, while adjusting beam sections with equipment such as the three-way jacks or gantry crane being arranged under beam sections
Position, after anchor point meets the requirements, applying deformed bar (prevents the segment of bridge pier two sides from generating down because of Gravitative Loads
Scratch, and make mutually to anchor between segment as overall structure), it checks the coordinate and elevation of anchor point again later, completes symmetrical
The installation of double width 1# block segment.2# block segment, 3# block segment constant pitch are sequentially completed along 1# block segment two sides again according to this technique
The installation of Duan Liang after each piece of prefabricated subsection is installed, is required through equipment such as total station and levels, institute before acquisition
The anchor point coordinate for all prefabricated subsections that construction is completed, to check this prefabricated subsection to the shadow of the segment position for completion of having constructed
It rings, according to the mounting coordinate for the subsequent segment that existing result determination will construct, and splicing span by span, it promotes by cross.
Precast Concrete Segmental Bridges technique has many advantages, such as, such as section assembling speed of application is very fast；Segment is light-weight, size
Small, quality is easy to control, convenient transportation etc., but also has working procedure complicated, and technique requires height, and technical difficulty is big, especially
The positioning difficulty of section assembling is larger, with the increase for the prefabricated subsection quantity being installed, to the segment for completion of having constructed
The duplicate measurements work of anchor point also can be heavier.The speed of application and precision level of segment installation depend primarily on segment
The measurement of the anchor point of top six adjusts work to the position of conversion and corresponding segment, and this also directly affects bridge construction
Overall progress and quality.At present at the construction field (site) still using traditional total station and level to 6 anchor point coordinates of segment
Measure, then compare with theoretical mounting coordinate and micro- whole segment position accordingly, finally make anchor point coordinate and theoretical installation
Coordinate is consistent, or within tolerance.Due to coordinate and duplicate measurements, task is heavy, and coordinate transformation process is lengthy and jumbled, it is difficult to short
Reach within allowable error in time, brings difficulty to the quick-assembling construction of beam sections.
Summary of the invention
The present invention provides a kind of device and application method for precast segment assembly straight bridge alignment control, can be simple
Ground determines that prefabricated subsection position whether within the scope of designing allowable error, more quickly completes installation and the frame of prefabricated subsection
If technical problem to be solved is existing assembling method since measurement of coordinates task is heavy, coordinate transformation process is lengthy and jumbled, it is difficult to
Reach within allowable error in a short time, brings difficulty to the quick-assembling construction of beam sections.
In order to solve the above-mentioned technical problem, the present invention adopts the following technical scheme: a kind of be used for precast segment assembly straight line
The device of bridge alignment control, including laser emitter, the second fixed device, the on the first fixed device, the first fixed device
The first poly (methyl methacrylate) plate on two fixed devices, the first fixed device includes the first fixed plate and the first steel pole, the first fixed plate
On offer the first screw hole, be able to use screw by the first screw hole for the overhanging arm in the first fixed plate backboard face and cast-in-place segment
Outside is adjacent to and fixes, and the first fixed plate front face is vertical and is fixedly installed the first steel pole, along first at the first steel pole head
Steel pole is circumferentially provided with first annular groove, and laser emitter end is arranged the first annulus, is equipped with and first on the inside of the first annulus
The compatible second annular groove of annular groove, the first annulus of laser emitter by ball sleeve on the first steel pole the
On one annular groove, and then laser emitter can be rotated relative to the first steel pole, and the first annulus end is fixedly installed plectane,
The center of plectane is overlapped with the center line of laser transmitter projects point；
Second fixed device includes the second poly (methyl methacrylate) plate, the lower face of the second poly (methyl methacrylate) plate and the first poly (methyl methacrylate) plate T-type
Connection, and the length of the second poly (methyl methacrylate) plate is greater than the length of the first poly (methyl methacrylate) plate, can have by glue special by second
The lower face of machine glass plate is Nian Jie with the upper surface of prefabricated subsection overhanging arm, and is adjacent to the first poly (methyl methacrylate) plate with prefabricated subsection
And the longitudinal axis of the bridge floor and bridge perpendicular to prefabricated subsection, the plate face upper edge of the first poly (methyl methacrylate) plate is close to prefabricated subsection
One jiao of preparatory scale have plane right-angle coordinate grid.
Further, first fixed plate is steel plate.
Further, first steel pole is perpendicularly fixed at the middle part of the first fixed plate plate face by welding.
Further, the first screw hole in first fixed plate is set to the top of the first fixed plate plate face, by first
When fixed plate and fixed cast-in-place segment, the upper surface of the first fixed plate can be made concordant with the upper surface of cast-in-place segment overhanging arm.
Further, Nian Jie by glue special between second poly (methyl methacrylate) plate and the first poly (methyl methacrylate) plate.
The application method of the above-mentioned device for precast segment assembly straight bridge alignment control, comprising the following steps:
S1 a laser emitter respectively) is arranged on the outside of two overhanging arms before and after the cast-in-place segment by the first fixed device, is installed
When, it will be adjacent to and fix on the outside of the first fixed plate backboard face and the overhanging arm of cast-in-place segment by the first screw hole using screw, the
One steel pole is parallel to bridge floor and perpendicular to bridge longitudinal axis, each laser emitter of all cast-in-place segment the same sides with it is corresponding
The relative position of cast-in-place segment is identical；
S2 first poly (methyl methacrylate) plate respectively) is arranged on the outside of two overhanging arms before and after the prefabricated subsection by the second fixed device,
It is by glue special that the lower face of the second poly (methyl methacrylate) plate is Nian Jie with the upper surface of prefabricated subsection overhanging arm when installation, first
Poly (methyl methacrylate) plate and prefabricated subsection are adjacent to and the longitudinal axis of the bridge floor perpendicular to prefabricated subsection and bridge, all prefabricated subsections are same
Each first poly (methyl methacrylate) plate of side is identical as the relative position of corresponding prefabricated subsection；
S3 the angle for) adjusting laser emitter rotation on cast-in-place segment, makes in two cast-in-place segments of arbitrary neighborhood, a cast-in-place section
The laser of two laser emitters outgoing of section two sides is capable of the laser emitter of side corresponding with another cast-in-place segment respectively
The plectane center centering of end, and keep laser emitter rotational angle constant, at this point, the laser and bridge of laser emitter outgoing
Beam longitudinal axis is parallel；
S4) the coordinate of recording laser transmitter, abscissa are the horizontal distance of laser transmitter projects point and corresponding cast-in-place segment,
Ordinate is the vertical distance of laser transmitter projects point and corresponding cast-in-place segment bridge floor, and each of each cast-in-place segment the same side swashs
Optical transmitting set coordinate is identical；
S5) the assembled prefabricated subsection between two cast-in-place segments, opens laser emitter, and two on one of them cast-in-place segment
Laser emitter outgoing laser can respectively on prefabricated subsection on two the first poly (methyl methacrylate) plates plane right-angle coordinate net
A luminous point is respectively formed on lattice, luminous point coordinate is denoted as x1、y1And x2、y2, observe the coordinate x of luminous point1、y1And x2、y2, use three-dimensional
Jack or gantry crane accurately adjust the position of prefabricated subsection, make x1、y1And x2、y2Respectively with side corresponding in step S4)
The coordinate of laser emitter is identical or its difference within tolerance, and then when using this laser rays as object of reference, cast-in-place section
Section is identical with the relative position of prefabricated subsection, i.e., the cross fall and head fall of cast-in-place segment and prefabricated subsection are all the same, this
When, prefabricated subsection and cast-in-place section assembling are fixed；
S6 the positioning of next prefabricated subsection between two cast-in-place segments) is completed in the same way, and completes assembly, is completed next
After the installation of a prefabricated subsection, the coordinate for the first poly (methyl methacrylate) plate on prefabricated subsection that construction is completed before observation is located at, inspection
Looking into this prefabricated subsection influences the position of the prefabricated subsection for completion of constructing before, will construct further according to existing result determination
The mounting coordinate of subsequent prefabricated subsection, in the same way complete two cast-in-place segments between each prefabricated subsection assembly, and with
The same manner completes the assembly of prefabricated subsection between each cast-in-place stage.
Further, when laser emitter is installed, keep the upper surface of the first fixed plate concordant with the upper surface of cast-in-place segment,
At this point, the laser emitter coordinate of cast-in-place segment front and rear sides is identical, and can be pre-recorded, it is denoted as x0、y0。
Further, the coordinate of pre-recorded laser emitter between two cast-in-place segments when assembled prefabricated subsection, is used
Three-way jack or gantry crane accurately adjust the position of prefabricated subsection, make x1、y1And x2、y2With x0、y0Identical or its difference exists
In allowable error, and then when using this laser rays as object of reference, cast-in-place segment is identical with the relative position of prefabricated subsection, i.e., cast-in-place
The cross fall and head fall of segment and prefabricated subsection are all the same, at this point, prefabricated subsection and cast-in-place section assembling are fixed.
Compared with the existing technology, the invention has the benefit that
The measurement and conversion to six anchor points above segment need not be omitted by instruments such as total station and levels in the present invention
Work, accelerates speed of application, reduces the labour workload of survey crew, reduce the time cost and manpower of bridge construction
Cost；Laser emitter is fixed on the outside of the overhanging arm of cast-in-place segment by the first fixed device, by laser transmitter projects point
The horizontal distance of the first steel pole of distance root and the sum of the thickness of the first fixed plate are denoted as x0, by laser transmitter projects point distance
The vertical distance of first fixed plate upper edge is denoted as y0, x0And y0Be it is determining, when installation, does not need to measure, and can directly read,
Plane right-angle coordinate grid is set in the plate face of one poly (methyl methacrylate) plate, is convenient for Rapid reading, the first poly (methyl methacrylate) plate passes through the
Two fixed devices are fixed on the outside of the overhanging arm of prefabricated subsection using glue special, can rapid installing and dismounting, convenient for placing and
It carries.
Detailed description of the invention
Fig. 1 is the top view of the first fixed device and the second fixed device when installing on cast-in-place segment and prefabricated subsection；
Fig. 2 is Figure 1A-A cross-sectional view；
Fig. 3 is Figure 1B-B cross-sectional view；
Fig. 4 is the structural schematic diagram of the first fixed device；
Fig. 5 is the structural schematic diagram of the second fixed device.
In figure: 1, cast-in-place segment 2, laser emitter 3, plectane 4, prefabricated subsection 5, the first poly (methyl methacrylate) plate
6, the first fixed plate 61, the first screw hole 7, the first steel pole 71, the first annulus 8, the second poly (methyl methacrylate) plate.
Specific embodiment
In order to keep the object of the invention, technical solution and advantage clearer, the present invention is made with reference to the accompanying drawing further
Detailed description.
As shown in Fig. 1 ~ 5, a kind of device for precast segment assembly straight bridge alignment control, including the first fixed dress
It sets, the fixed device of laser emitter 2, second on the first fixed device, the first poly (methyl methacrylate) plate 5 on the second fixed device,
First fixed device includes the first fixed plate 6 and the first steel pole 7, offers the first screw hole 61 in the first fixed plate 6, is able to use
Screw will be adjacent to and be fixed on the outside of first fixed plate, 6 backboard face and the overhanging arm of cast-in-place segment 1 by the first screw hole 61, and first is solid
6 front face of fixed board is vertical and is fixedly installed the first steel pole 7, is circumferentially provided with first along the first steel pole 7 at 7 head of the first steel pole
Annular groove, 2 end of laser emitter are arranged the first annulus 71, are equipped on the inside of the first annulus 71 and are adapted with first annular groove
Second annular groove, the first annular groove of the first annulus 71 of laser emitter 2 by ball sleeve on the first steel pole 7
On, and then laser emitter 2 can be rotated relative to the first steel pole 7,71 end of the first annulus is fixedly installed plectane 3, plectane 3
Center be overlapped with the center line of 2 launch point of laser emitter；
Second fixed device includes the second poly (methyl methacrylate) plate 8, the lower face of the second poly (methyl methacrylate) plate 8 and the first poly (methyl methacrylate) plate 5T
Type connection, and the length of the second poly (methyl methacrylate) plate 8 is greater than the length of the first poly (methyl methacrylate) plate 5, can be by glue special by the
The lower face of two poly (methyl methacrylate) plates 8 is Nian Jie with the upper surface of 4 overhanging arm of prefabricated subsection, and make the first poly (methyl methacrylate) plate 5 with it is prefabricated
Segment 4 is adjacent to and the longitudinal axis of the bridge floor perpendicular to prefabricated subsection 4 and bridge, the plate face upper edge of the first poly (methyl methacrylate) plate 5 with
One jiao of preparatory scale close to prefabricated subsection 4 has plane right-angle coordinate grid.
Wherein, first fixed plate 6 is steel plate, and first steel pole 7 is perpendicularly fixed at the first fixed plate 6 by welding
The middle part of plate face, is not susceptible to deformation during installing and using.
Wherein, the first screw hole 61 in first fixed plate 6 is set to the top of 6 plate face of the first fixed plate, by first
When fixed plate 6 and fixed cast-in-place segment 1, the upper surface of the upper surface and cast-in-place 1 overhanging arm of segment that can make the first fixed plate 6 is flat
Together, due to the relative position of laser emitter 2 and the first fixed plate 6 be it is fixed, when installation, make the upper table of the first fixed plate 6
Face is concordant with the upper surface of cast-in-place 1 overhanging arm of segment, at this point, 2 launch point of laser emitter is apart from the vertical of cast-in-place segment Bridge 1 face
Distance is equidistant with 2 the first fixed plate of launch point distance of laser emitter, 6 upper surface, can be recorded in advance.
Wherein, Nian Jie by glue special between second poly (methyl methacrylate) plate 8 and the first poly (methyl methacrylate) plate 5, convenient for tearing open
It unloads, place, carry.
The application method of the above-mentioned device for precast segment assembly straight bridge alignment control, comprising the following steps:
S1 a laser emitter 2 respectively) is arranged on the outside of two overhanging arms before and after the cast-in-place segment 1 by the first fixed device, is pacified
When dress, it will be adjacent on the outside of the overhanging arm of first fixed plate, 6 backboard face and cast-in-place segment 1 using screw by the first screw hole 61 and solid
Fixed, the first steel pole 7 is parallel to bridge floor and perpendicular to bridge longitudinal axis, each laser emitter 2 of all cast-in-place 1 the same sides of segment
It is identical as the relative position of corresponding cast-in-place segment 1；
S2 first poly (methyl methacrylate) plate respectively) is arranged on the outside of two overhanging arms before and after the prefabricated subsection 4 by the second fixed device
5, it is by glue special that the lower face of the second poly (methyl methacrylate) plate 8 is Nian Jie with the upper surface of 4 overhanging arm of prefabricated subsection when installation,
First poly (methyl methacrylate) plate 5 is adjacent to prefabricated subsection 4 and the longitudinal axis of the bridge floor perpendicular to prefabricated subsection 4 and bridge, all prefabricated
Each first poly (methyl methacrylate) plate 5 of 4 the same side of segment is identical as the relative position of corresponding prefabricated subsection 4；
S3 the angle that laser emitter 2 rotates on cast-in-place segment 1) is adjusted, is made in arbitrary neighborhood two cast-in-place segments 1, one existing
The laser for pouring two laser emitters 2 outgoing of 1 two sides of segment is capable of the laser of side corresponding with another cast-in-place segment 1 respectively
The 3 center centering of plectane of 2 end of transmitter, and keep 2 rotational angle of laser emitter constant, at this point, laser emitter 2 is emitted
Laser it is parallel with bridge longitudinal axis；
S4) the coordinate of recording laser transmitter 2, abscissa be 2 launch point of laser emitter and corresponding cast-in-place segment 1 it is horizontal away from
From ordinate is the vertical distance of 2 launch point of laser emitter and corresponding cast-in-place segment Bridge 1 face, each cast-in-place 1 the same side of segment
Each laser emitter (2) coordinate is identical；
S5) the assembled prefabricated subsection 4 between two cast-in-place segments 1, opens laser emitter 2, on one of them cast-in-place segment 1
The laser of two laser emitters 2 outgoing can be sat the flat square on prefabricated subsection 4 on two the first poly (methyl methacrylate) plates 5 respectively
A luminous point is respectively formed on mark system grid, luminous point coordinate is denoted as x1、y1And x2、y2, observe the coordinate x of luminous point1、y1And x2、y2,
The position that prefabricated subsection 4 is accurately adjusted with three-way jack or gantry crane, makes x1、y1And x2、y2Respectively with it is opposite in step S4)
Answer the coordinate of the laser emitter 2 of side identical or its difference within tolerance, and then using this laser rays as object of reference
When, cast-in-place segment 1 is identical with the relative position of prefabricated subsection 4, i.e., cross fall and the longitudinal direction of cast-in-place segment 1 and prefabricated subsection 4
The gradient is all the same, at this point, prefabricated subsection 4 and cast-in-place segment (1) is assembled fixed；
S6 the positioning of next prefabricated subsection 4 between two cast-in-place segments 1) is completed in the same way, and completes assembly, under completion
After the installation of one prefabricated subsection 4, the seat for the first poly (methyl methacrylate) plate 5 on prefabricated subsection 4 that construction is completed before observation is located at
Mark checks that this prefabricated subsection 4 influences the position of the prefabricated subsection 4 for completion of constructing before, is further according to the determination of existing result
By the mounting coordinate of the subsequent prefabricated subsection 4 of construction, each prefabricated subsection 4 between two cast-in-place segments 1 is completed in the same way
Assembly, and complete the assembly of prefabricated subsection 4 between each cast-in-place stage 1 in the same way.
Wherein, step S1) in installation laser emitter 4 when, make the upper of the upper surface of the first fixed plate 6 and cast-in-place segment 1
Flush is capable of first recording laser transmitter 2 at this point, 2 coordinate of laser emitter of 1 front and rear sides of cast-in-place segment is identical
Coordinate accurately adjusts prefabricated subsection 4 with three-way jack or gantry crane between two cast-in-place segments 1 when assembled prefabricated subsection 4
Position makes x1、y1And x2、y2With x0、y0Identical or its difference within tolerance, and then using this laser rays as object of reference
When, cast-in-place segment 1 is identical with the relative position of prefabricated subsection 4, i.e., cross fall and the longitudinal direction of cast-in-place segment 1 and prefabricated subsection 4
The gradient is all the same, at this point, prefabricated subsection 4 and cast-in-place segment 1 is assembled fixed.
The present invention need not by instruments such as total station and levels, be omitted the measurement to six anchor points above segment with
Convert work, accelerates speed of application, reduces the labour workload of survey crew, reduce the time cost of bridge construction with
Human cost；Laser emitter 2 is fixed on the outside of the overhanging arm of cast-in-place segment 1 by the first fixed device, by laser emitter 2
The horizontal distance of 7 root of the first steel pole of launch point distance and the sum of the thickness of the first fixed plate 6 are denoted as x0, by laser emitter 2
The vertical distance of 6 upper edge of the first fixed plate of launch point distance is denoted as y0, x0And y0Be it is determining, when installation, does not need to measure, can
It directly reads, plane right-angle coordinate grid is set in the plate face of the first poly (methyl methacrylate) plate 5, be convenient for Rapid reading, first is organic
Glass plate 5 is fixed on the outside of the overhanging arm of prefabricated subsection 4 by the second fixed device using glue special, can be installed rapidly and be torn open
It unloads, convenient for placing and carrying.
The explanation of the above specific embodiment is merely used to help understand method and its core concept of the invention, but it should
Understand, to those skilled in the art, without departing from the principle of the present invention, the present invention can also be carried out several
Improvement and modification, protection scope of the present invention are limited by the accompanying claims.
Claims (8)
1. a kind of device for precast segment assembly straight bridge alignment control, it is characterised in that: including the first fixed device, the
The first poly (methyl methacrylate) plate (5) on laser emitter (2), the second fixed device, the second fixed device on one fixed device, the
One fixed device includes the first fixed plate (6) and the first steel pole (7), offers the first screw hole (61), energy in the first fixed plate (6)
It will be enough adjacent on the outside of the first fixed plate (6) backboard face and the overhanging arm of cast-in-place segment (1) using screw by the first screw hole (61)
And it is fixed, the first fixed plate (6) front face is vertical and is fixedly installed the first steel pole (7), along first at the first steel pole (7) head
Steel pole (7) is circumferentially provided with first annular groove, and the first annulus (71) are arranged in laser emitter (2) end, the first annulus (71)
Inside is equipped with second annular groove compatible with first annular groove, and the first annulus (71) of laser emitter (2) passes through rolling
Bead sleeve is on the first annular groove on the first steel pole (7), and then laser emitter (2) can be with respect to the first steel pole (7)
Rotation, the first annulus (71) end are fixedly installed plectane (3), in the center of plectane (3) and laser emitter (2) launch point
Heart line is overlapped；
Second fixed device includes the second poly (methyl methacrylate) plate (8), the lower face and the first organic glass of the second poly (methyl methacrylate) plate (8)
The connection of plate (5) T-type, and the length of the second poly (methyl methacrylate) plate (8) is greater than the length of the first poly (methyl methacrylate) plate (5), it can be by special
It is with glue that the lower face of the second poly (methyl methacrylate) plate (8) is Nian Jie with the upper surface of prefabricated subsection (4) overhanging arm, and make first organic
Glass plate (5) and prefabricated subsection (4) are adjacent to and the longitudinal axis of the bridge floor perpendicular to prefabricated subsection (4) and bridge, first organic glass
There is plane right-angle coordinate grid in the plate face upper edge of glass plate (5) with one jiao of preparatory scale close to prefabricated subsection (4).
2. a kind of device for precast segment assembly straight bridge alignment control according to claim 1, it is characterised in that:
First fixed plate (6) is steel plate.
3. a kind of device for precast segment assembly straight bridge alignment control according to claim 2, it is characterised in that:
First steel pole (7) is perpendicularly fixed at the middle part of the first fixed plate (6) plate face by welding.
4. a kind of device for precast segment assembly straight bridge alignment control according to claim 1, it is characterised in that:
The first screw hole (61) on first fixed plate (6) is set to the top of the first fixed plate (6) plate face, by the first fixed plate
(6) when fixed with cast-in-place segment (1), the upper surface of the first fixed plate (6) and the upper surface of cast-in-place segment (1) overhanging arm can be made
Concordantly.
5. a kind of device for precast segment assembly straight bridge alignment control according to claim 1, it is characterised in that:
It is Nian Jie by glue special between second poly (methyl methacrylate) plate (8) and the first poly (methyl methacrylate) plate (5).
6. the user described in 1 ~ 5 any bar of the claims for the device of precast segment assembly straight bridge alignment control
Method, comprising the following steps:
S1) laser emitter is respectively arranged before and after cast-in-place segment (1) by the first fixed device on the outside of two overhanging arms
(2), when installation, pass through the first screw hole (61) for the overhanging arm in the first fixed plate (6) backboard face and cast-in-place segment (1) using screw
Outside is adjacent to and fixes, and the first steel pole (7) is parallel to bridge floor and perpendicular to bridge longitudinal axis, all cast-in-place segment (1) the same sides
Each laser emitter (2) it is identical as the relative position of corresponding cast-in-place segment (1)；
S2) first organic glass is respectively arranged before and after prefabricated subsection (4) by the second fixed device on the outside of two overhanging arms
Plate (5), when installation, by glue special by the upper table of the lower face of the second poly (methyl methacrylate) plate (8) and prefabricated subsection (4) overhanging arm
Face bonding, the first poly (methyl methacrylate) plate (5) and prefabricated subsection (4) be adjacent to and the bridge floor perpendicular to prefabricated subsection (4) and bridge it is vertical
Axis, the opposite position of each first poly (methyl methacrylate) plate (5) and corresponding prefabricated subsection (4) of all prefabricated subsection (4) the same sides
It sets identical；
S3 the angle for) adjusting laser emitter (2) rotation on cast-in-place segment (1), makes in arbitrary neighborhood two cast-in-place segments (1),
The laser of two laser emitters (2) outgoing of one cast-in-place segment (1) two sides can be right with another cast-in-place segment (1) respectively
Plectane (3) center centering of laser emitter (2) end of side is answered, and keeps laser emitter (2) rotational angle constant, this
When, the laser of laser emitter (2) outgoing is parallel with bridge longitudinal axis；
S4) the coordinate of recording laser transmitter (2), abscissa are laser emitter (2) launch point and corresponding cast-in-place segment (1)
Horizontal distance, ordinate are the vertical distance of laser emitter (2) launch point and corresponding cast-in-place segment (1) bridge floor, each cast-in-place section
Each laser emitter (2) coordinate of section (1) the same side is identical；
S5) the assembled prefabricated subsection (4) between two cast-in-place segments (1), opens laser emitter (2), one of them cast-in-place section
The laser of two laser emitters (2) outgoing in section (1) can be respectively in upper two the first poly (methyl methacrylate) plates of prefabricated subsection (4)
(5) luminous point is respectively formed on the plane right-angle coordinate grid on, luminous point coordinate is denoted as x1、y1And x2、y2, observe luminous point
Coordinate x1、y1And x2、y2, the position of prefabricated subsection (4) is accurately adjusted with three-way jack or gantry crane, makes x1、y1And x2、y2
Respectively or its difference identical as the coordinate of laser emitter (2) of side corresponding in step S4) within tolerance, in turn
When using this laser rays as object of reference, cast-in-place segment (1) is identical with the relative position of prefabricated subsection (4), i.e., cast-in-place segment (1) and
The cross fall and head fall of prefabricated subsection (4) are all the same, at this point, prefabricated subsection (4) and cast-in-place segment (1) are assembled solid
It is fixed；
S6 the positioning of next prefabricated subsection (4) between two cast-in-place segments (1)) is completed in the same way, and completes assembly, it is complete
The first organic glass after installation at next prefabricated subsection (4), before observation is located on the prefabricated subsection (4) of construction completion
The coordinate of plate (5) checks that this prefabricated subsection (4) influences the position of the prefabricated subsection (4) for completion of constructing before, further according to existing
The mounting coordinate of subsequent prefabricated subsection (4) that will construct of result determination, complete in the same way two cast-in-place segments (1) it
Between each prefabricated subsection (4) assembly, and complete the assembly of prefabricated subsection (4) between each cast-in-place stage (1) in the same way.
7. the application method of the device according to claim 6 for precast segment assembly straight bridge alignment control, special
Sign is: in step S1) when installation laser emitter (4), making the upper of the upper surface of the first fixed plate (6) and cast-in-place segment (1)
Flush is denoted as x at this point, laser emitter (2) coordinate of cast-in-place segment (1) front and rear sides is identical, and can be pre-recorded0、
y0。
8. the application method of the device according to claim 7 for precast segment assembly straight bridge alignment control, special
Sign is: in the coordinate of pre-recorded laser emitter (2), S5 in step S4)) in it is assembled pre- between two cast-in-place segments (1)
When segment (4) processed, the position of prefabricated subsection (4) is accurately adjusted with three-way jack or gantry crane, makes x1、y1And x2、y2With x0、y0
Identical or its difference within tolerance, and then when using this laser rays as object of reference, cast-in-place segment (1) and prefabricated subsection
(4) relative position is identical, i.e., the cross fall and head fall of cast-in-place segment (1) and prefabricated subsection (4) are all the same, at this point,
Prefabricated subsection (4) and cast-in-place segment (1) are assembled fixed.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910435115.6A CN110029585B (en) | 2019-05-23 | Device for linear control of segment prefabrication and assembly linear bridge and use method |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910435115.6A CN110029585B (en) | 2019-05-23 | Device for linear control of segment prefabrication and assembly linear bridge and use method |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN110029585A true CN110029585A (en) | 2019-07-19 |
| CN110029585B CN110029585B (en) | 2024-04-19 |
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Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111648239A (en) * | 2020-04-23 | 2020-09-11 | 中铁十六局集团第四工程有限公司 | Segmental beam construction positioning device and segmental beam construction method |
| CN112663499A (en) * | 2020-12-01 | 2021-04-16 | 中铁二局集团有限公司 | Positioning and mounting method for lower chord of steel truss girder of cable-stayed bridge |
| CN112853917A (en) * | 2021-03-19 | 2021-05-28 | 中铁大桥勘测设计院集团有限公司 | Manufacturing configuration control method of box girder segment unit and bridge |
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