CN107841932A - Method for manufacturing, installing and positioning tied arch bridge arch rib segment - Google Patents
Method for manufacturing, installing and positioning tied arch bridge arch rib segment Download PDFInfo
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- CN107841932A CN107841932A CN201710979651.3A CN201710979651A CN107841932A CN 107841932 A CN107841932 A CN 107841932A CN 201710979651 A CN201710979651 A CN 201710979651A CN 107841932 A CN107841932 A CN 107841932A
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- 238000000034 method Methods 0.000 title claims abstract description 26
- 238000004519 manufacturing process Methods 0.000 title abstract description 3
- 238000009434 installation Methods 0.000 claims abstract description 47
- 238000003466 welding Methods 0.000 claims abstract description 32
- 230000008878 coupling Effects 0.000 claims description 36
- 238000010168 coupling process Methods 0.000 claims description 36
- 238000005859 coupling reaction Methods 0.000 claims description 36
- 239000000463 material Substances 0.000 claims description 27
- 238000002360 preparation method Methods 0.000 claims description 16
- 238000002788 crimping Methods 0.000 claims description 10
- 238000000465 moulding Methods 0.000 claims description 10
- 238000005452 bending Methods 0.000 claims description 4
- 238000005520 cutting process Methods 0.000 claims description 3
- 238000005096 rolling process Methods 0.000 abstract description 2
- 230000006872 improvement Effects 0.000 description 7
- 230000008569 process Effects 0.000 description 6
- 238000010276 construction Methods 0.000 description 4
- 230000009286 beneficial effect Effects 0.000 description 3
- 230000007547 defect Effects 0.000 description 2
- 206010023204 Joint dislocation Diseases 0.000 description 1
- 229910000831 Steel Inorganic materials 0.000 description 1
- 208000027418 Wounds and injury Diseases 0.000 description 1
- 238000004458 analytical method Methods 0.000 description 1
- 230000008901 benefit Effects 0.000 description 1
- 238000004364 calculation method Methods 0.000 description 1
- 238000001514 detection method Methods 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 230000004927 fusion Effects 0.000 description 1
- 238000005259 measurement Methods 0.000 description 1
- 230000007246 mechanism Effects 0.000 description 1
- 239000000203 mixture Substances 0.000 description 1
- 238000003032 molecular docking Methods 0.000 description 1
- 238000013000 roll bending Methods 0.000 description 1
- 239000010959 steel Substances 0.000 description 1
Classifications
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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
-
- E—FIXED CONSTRUCTIONS
- E01—CONSTRUCTION OF ROADS, RAILWAYS, OR BRIDGES
- E01D—CONSTRUCTION OF BRIDGES, ELEVATED ROADWAYS OR VIADUCTS; ASSEMBLY OF BRIDGES
- E01D4/00—Arch-type bridges
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- G—PHYSICS
- G06—COMPUTING; CALCULATING OR COUNTING
- G06F—ELECTRIC DIGITAL DATA PROCESSING
- G06F30/00—Computer-aided design [CAD]
- G06F30/10—Geometric CAD
- G06F30/13—Architectural design, e.g. computer-aided architectural design [CAAD] related to design of buildings, bridges, landscapes, production plants or roads
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- Computational Mathematics (AREA)
- Mathematical Analysis (AREA)
- Mathematical Optimization (AREA)
- Pure & Applied Mathematics (AREA)
- Evolutionary Computation (AREA)
- General Engineering & Computer Science (AREA)
- Bridges Or Land Bridges (AREA)
Abstract
The invention provides a method for manufacturing, installing and positioning a tie rod arch bridge arch rib segment, which comprises the following steps: carrying out three-dimensional modeling on the arch rib sections to form an arch rib section model, dividing the arch rib section model into a plurality of sections of pipe section models and carrying out computer lofting; performing plate rolling on the blanked plate according to the size of the multi-section pipe joint model after lofting by a computer, enabling two sides of the plate to be close to each other to form a longitudinal seam, welding the longitudinal seam to form a longitudinal welding seam, and welding the plate to form a circular pipe; three-dimensionally scanning the circular tube by a three-dimensional scanner to form a point cloud model of the circular tube, and rechecking and matching the point cloud model of the circular tube with the tube joint model after lofting by the computer; and according to the position of the multi-section pipe joint model after computer lofting, welding a plurality of circular pipes with the linear error smaller than a certain numerical value in rechecking matching to form the arch rib section. The invention can accurately control the line shape and size of the arch rib segment and also can accurately control the installation and positioning precision of the arch rib segment.
Description
Technical field
The present invention relates to bridge construction field, relates in particular to a kind of bowstring arch bridge rib-lifting section and makes and install positioning
Method.
Background technology
At present, the making for continuous beam arch rib of growing up and installation have strict technical requirements.Traditional arch rib makes master
Will be by manual measurement means, its workload is big, precision reliability bottom；And traditional arch rib installation is using the peace of crane and parallels
Dress mode, difficulty of construction is big, and installation positioning precision is low.
The content of the invention
In view of the foregoing, the technical problems to be solved by the invention are to provide a kind of making precision that can improve arch rib
The making of bowstring arch bridge rib-lifting section and installation and locating method with the installation accuracy of arch rib.
To realize above-mentioned technique effect, the invention discloses a kind of bowstring arch bridge rib-lifting section preparation method, including it is following
Step：
Three-dimensional modeling is carried out to rib-lifting section and forms a rib-lifting section model, the rib-lifting section model is divided into multistage pipe
Save model and computer lofting is simultaneously carried out to tube coupling model described in multistage, setting-out goes out size and the position of every section of tube coupling model；
The size of tube coupling model carries out plate cutting respectively according to the multistage after computer lofting；
Pipe crimping is carried out to the sheet material after blanking, makes the both sides of the sheet material mutually draw close to form longitudinal joint；
Welding is carried out to the longitudinal joint and forms longitudinal seam, makes the sheet material weld to form pipe；
3-D scanning is carried out to the pipe by spatial digitizer and forms the point cloud model of the pipe, by the circle
The point cloud model of pipe carries out review matching with the tube coupling model after corresponding computer lofting；
The position of tube coupling model as described in the multistage after computer lofting, Linear Error is less than a fixed number in being matched to review
Multiple pipes of value are welded, and form the rib-lifting section.
The beneficial effects of the present invention are：Linear (crooked radian) and size of rib-lifting section can accurately be controlled.
Bowstring arch bridge rib-lifting section preparation method of the present invention further improvement is that, in the plate to after blanking
Material carries out pipe crimping, the both sides of the sheet material is mutually drawn close before the step of forming longitudinal joint, in addition to step：The sheet material is entered
Row pre-bending.
Bowstring arch bridge rib-lifting section preparation method of the present invention further improvement is that, it is described press computer lofting after
The position of tube coupling model described in multistage, Linear Error welds less than multiple pipes of certain numerical value in being matched to review
Connect, in the step of forming the rib-lifting section：The longitudinal seam of the adjacent pipe is mutually staggered 200mm to 400mm.
Bowstring arch bridge rib-lifting section preparation method of the present invention further improvement is that, it is described press computer lofting after it is more
The position of Duan Suoshu tube coupling models, Linear Error welds less than multiple pipes of certain numerical value in being matched to review,
The step of forming the rib-lifting section includes：Installation positioning is carried out to the pipe by assembled moulding bed, adjust the pipe it
Between relative position so that integral linear and the rib-lifting section model between the pipe it is linear between error be less than
Equal to 2mm.
Bowstring arch bridge rib-lifting section preparation method of the present invention further improvement is that, in it is described press computer lofting after
The position of tube coupling model described in multistage, Linear Error welds less than multiple pipes of certain numerical value in being matched to review
Connect, after the step of forming the rib-lifting section, in addition to step：By spatial digitizer to the arch rib after the completion of welding
Section carries out 3-D scanning and forms the point cloud model of the rib-lifting section, by the point cloud model of the rib-lifting section and the arch
Rib Segment Model carries out review matching.
The further improvement of bowstring arch bridge rib-lifting section preparation method of the present invention is that the rib-lifting section model also wraps
Two rib-lifting sections being parallel to each other are included, are connected between two rib-lifting sections by web.
The invention also discloses a kind of installation and locating method of bowstring arch bridge rib-lifting section, it is characterised in that including following
Step：
According to the installation site of rib-lifting section, in the mounting bracket that rib-lifting section is set up on bowstring arch bridge, the installation branch
Frame is provided with support block and limited block, and the mounting bracket is provided with the first regulation machine for being used for adjusting the support block up and down
Structure, the mounting bracket are provided with the second governor motion for limited block described in left and right adjusting；
The rib-lifting section is lifted to the mounting bracket by loop wheel machine, by being lowered on first governor motion
The support block is saved, the end of the rib-lifting section is placed in the support block；Adjusted by described second governor motion or so
The limited block is saved, the side of the end of the rib-lifting section is support on the limited block.
The beneficial effects of the present invention are：The installation positioning precision of rib-lifting section can accurately be controlled.
Bowstring arch bridge rib-lifting section of the present invention installation and locating method further improvement is that, it is described by loop wheel machine by institute
State rib-lifting section to lift to the mounting bracket, the support block is adjusted up and down by first governor motion, made described
The end of rib-lifting section is placed in the support block；By limited block described in the second governor motion left and right adjusting, make described
The step of side of the end of rib-lifting section is support on the limited block includes：The peace of the rib-lifting section is detected by total powerstation
Dress position location ensures that the site error between the installation site of the rib-lifting section and actually required installation site is less than
In 2mm.
Bowstring arch bridge rib-lifting section of the present invention installation and locating method further improvement is that, the support block is provided with
For supporting the deep-slotted chip breaker of the rib-lifting section.
The invention also discloses a kind of bowstring arch bridge rib-lifting section mounting and positioning device, including
The mounting bracket being erected on bowstring arch bridge；
For placing the support block of rib-lifting section, the support block liftable is in the mounting bracket；And
The limited block of the mounting bracket is slidably coupled to, the limited block sliding is positioned at by fixture afterwards in place
In the mounting bracket and side of the rib-lifting section is support on the limited block.
Brief description of the drawings
Fig. 1 is the Making programme figure of rib-lifting section in bowstring arch bridge rib-lifting section making of the present invention and installation and locating method.
Fig. 2 is pipe crimping working state schematic representation in bowstring arch bridge rib-lifting section making of the present invention and installation and locating method.
Fig. 3 is the installation positioning dress of rib-lifting section in bowstring arch bridge rib-lifting section making of the present invention and installation and locating method
Put.
Embodiment
For the benefit of to the understanding of the present invention, illustrated below in conjunction with drawings and Examples.
Fig. 1 to Fig. 2 is referred to, the present invention provides a kind of bowstring arch bridge rib-lifting section preparation method, and it comprises the following steps
(as shown in Figure 1)：
Step 101：Three-dimensional modeling is carried out to rib-lifting section and forms a rib-lifting section model, rib-lifting section model is divided into more
Duan Guanjie models simultaneously carry out computer lofting to multistage tube coupling model, and setting-out goes out size and the position of every section of tube coupling model；
Step 102：Plate cutting is carried out according to the size of the multistage tube coupling model after computer lofting respectively；
Step 103：Pipe crimping is carried out to the sheet material after blanking, makes the both sides of sheet material mutually draw close to form longitudinal joint；
Step 104：Welding is carried out to longitudinal joint and forms longitudinal seam, makes sheet material weld to form pipe；
Step 105：3-D scanning is carried out to pipe by spatial digitizer and forms the point cloud model of pipe, by pipe
Point cloud model carries out review matching with the tube coupling model after corresponding computer lofting；
Step 106：By the position of the multistage tube coupling model after computer lofting, Linear Error is less than one in being matched to review
Multiple pipes of fixed number value are welded, and form rib-lifting section.
In the present embodiment, by the position of the multistage tube coupling model after computer lofting, Linear Error is small in being matched to review
Linear Error in the step of forming rib-lifting section by welding between multiple pipes of certain numerical value should be less than 0.5mm,
And refer to that the Linear Error of each pipe should be less than 0.5mm.
According to theoretical arch equation, by the way that the position coordinates of each point on rib-lifting section is calculated, profit in the present embodiment
Three-dimensional modeling is carried out to rib-lifting section with Tekla Structures softwares and forms a rib-lifting section model, while can also be drawn out
Arch, multistage is divided into after optimizing analysis to rib-lifting section model structure using Tekla Structures softwares
Tube coupling model, and computer lofting is carried out to each section of tube coupling model, setting-out goes out each section of tube coupling modal position and size.During blanking,
The length and width of sheet material respectively according to the length of each section of tube coupling model and along tube coupling model circumferencial direction central core girth come
Determine.Pipe crimping is carried out to the sheet material after blanking by veneer reeling machine；Need to be corrected wound steel pipe after the completion of roll bending, to eliminate
The problems such as sheet material both sides are mutually drawn close issuable longitudinal joint dislocation, port misalignment, pulleying and rolled up less；Formed during sheet material pipe crimping vertical
Seam, carries out that welding forms longitudinal seam and sheet material welds and to form pipe by using Lincoln weld welding technique to longitudinal joint；Weldering
In termination process, longitudinal joint periphery can produce certain mistake circle phenomenon, therefore also need to carry out pipe again through veneer reeling machine after welding
Justify in school.After the completion of being welded to longitudinal joint, longitudinal seam need to be detected a flaw, to avoid longitudinal seam from defect occur.
In the present embodiment described computer lofting refer to according to the physical dimension of rib-lifting section on construction drawing or according to
Rib-lifting section designed by arch equation, with 1:1 ratio draws out the true shape and size of rib-lifting section in a computer,
By computer disposal, rib-lifting section can be divided into multistage tube coupling model, draw the size of each tube coupling model and the position of each point
Coordinate, foundation is provided for the blanking of sheet material.
It is preferred that carrying out pipe crimping to the sheet material after blanking, sheet material both sides are mutually drawn close before the step of forming longitudinal joint, also wrapped
Include step：Pre-bending is carried out to sheet material；The termination remained straight edge of sheet material both sides is not easy to eliminate when this is due to pipe crimping, therefore is rolling up
Guan Qianxu carries out pre-bending processing to sheet material.
It is preferred that by the position of the multistage tube coupling model after computer lofting, Linear Error is less than one in being matched to review
Multiple pipes of fixed number value are welded, when forming the step of rib-lifting section：The longitudinal seam of adjacent pipe mutually staggers 200mm
To 400mm, i.e., the longitudinal seam of adjacent pipe staggers in opposite direction.Further, pipe is pacified by assembled moulding bed
Set position, adjust the relative position between pipe so that integral linear and rib-lifting section model between pipe it is linear between
Error be less than or equal to 2mm, when pipe that will be corresponding with multistage tube coupling model carries out assembled, entirety that multiple pipes are formed
Linear linear with rib-lifting section model between Linear Error be no more than 2mm；In the present embodiment, multiple pipes are formed whole
The linear and rib-lifting section model of body it is linear between Linear Error specifically referred to no more than 2mm, by assembled moulding bed to more
After individual pipe carries out assembled positioning, an entirety of multiple pipes compositions, its Linear Error between arch rib model does not surpass
Cross 2mm.
In the present embodiment, when carrying out installation positioning to pipe by assembled moulding bed, installing the site error of anchor point should control
For system within ± 0.5mm, the error of perpendicularity for installing anchor point is less than or equal to 0.5mm.Position is mounted opposite between multiple pipes
The relative position put between multistage tube coupling model needs unanimously；Each section of tube coupling model can be numbered in three-dimensional modeling,
Each sheet material is corresponded during blanking and is numbered；Each pipe is installed in position fixing process by adjusting each pipe on assembled moulding bed
Between relative position make it that concordantly degree is no more than 2mm for docking port to be welded between adjacent pipe.CO is used between adjacent pipe2
Gas shielded arc welding welding technique carries out girth welding to adjacent pipe；Also need to detect bevel angle before welding, its error
5 ° are must not exceed, and weld gap should control each weld seam welding in 5~8mm, welding process at least complete between adjacent pipe
Into 2/3 fusion length；Need to detect a flaw to weld seam after the completion of welding, avoid commissure from defect occur.
It is preferred that by the position of the multistage tube coupling model after computer lofting, Linear Error is less than one in being matched to review
Multiple pipes of fixed number value are welded, formed rib-lifting section the step of after：Also include step：Pass through spatial digitizer butt welding
Rib-lifting section after the completion of connecing carries out 3-D scanning and forms the point cloud model of rib-lifting section, by the point cloud model of rib-lifting section with
Rib-lifting section model carries out review matching.
In the present embodiment, rib-lifting section model includes two rib-lifting sections being parallel to each other, and leads between two rib-lifting sections
Cross web connection.Rib-lifting section in actual fabrication includes described in bowstring arch bridge rib-lifting section preparation method two pieces mutually
Parallel rib-lifting section, two pieces of rib-lifting sections being parallel to each other are connected by two blocks of webs, each longitudinal direction on two rib-lifting sections
Weld seam is between two blocks of webs.For ease of description, be parallel to each other two rib-lifting sections are referred to as in this specification
String pipe and lower chord tube, two blocks of webs are respectively bottom web and epiplastron, and the welding step of web is specific as follows：
Will be linear consistent with the pipe that winds up (or lower chord tube) and the bottom web to connecting is layed on assembled moulding bed；
Winded up pipe and lower chord tube in installation on assembled moulding bed；
The pipe and bottom web that winds up, lower chord tube and bottom web are welded respectively, the whole of bottom web is ensured in welding process
In the range of body Linear Error ± 2mm；
Epiplastron is installed, being provided with multiple temporary supports on bottom web is placed in epiplastron on multiple temporary supports,
The pipe and epiplastron that winds up, lower chord tube and epiplastron are welded respectively, ensure that the integral linear of epiplastron misses in welding process
Difference ± 2mm；
Detected a flaw after welding.
In the present embodiment, when being connected between two rib-lifting sections by web, bottom web or the installation of epiplastron horizontal direction
It is positioned on assembled moulding bed, the flatness error of assembled moulding bed is controlled in the range of 2mm.
In the present embodiment, Holon 3D scanners, UMAX spatial digitizers, day figure spatial digitizer etc. can be selected to each section
Rib-lifting section after the completion of pipe and welding carries out 3-D scanning and can distinguish the point cloud model and rib-lifting section of form pipe
Point cloud model；Then the tube coupling model after the point cloud model of pipe and setting-out is carried out by review matching by computer, passes through meter
The point cloud model of rib-lifting section and rib-lifting section model are carried out review matching by calculation machine.
Present invention also offers a kind of installation and locating method of bowstring arch bridge rib-lifting section, comprise the following steps (such as Fig. 2 institutes
Show)：
Step 201：According to the installation site of rib-lifting section, in the mounting bracket that rib-lifting section is set up on bowstring arch bridge, institute
State mounting bracket and be provided with support block and limited block, the mounting bracket, which is provided with, to be used to adjust the first of the support block up and down
Governor motion, the mounting bracket are provided with the second governor motion for limited block described in left and right adjusting；
Step 202：The rib-lifting section is lifted to the mounting bracket by loop wheel machine, passes through the described first regulation machine
Structure adjusts the support block up and down, the end of the rib-lifting section is placed in the support block；Pass through the described second regulation machine
Limited block described in structure left and right adjusting, the side of the end of the rib-lifting section is set to be support on the limited block.
In the present embodiment, before being lifted by loop wheel machine to rib-lifting section, the continuous beam bottom of bowstring arch bridge is added
Gu its object is to improve the integrated support intensity of bridge floor at continuous beam, meet the current and lifting requirements of Large-scale Hoisting equipment.
A section rib-lifting section of growing up can be lifted by Large-scale Hoisting equipment, by reducing the rib-lifting section number on arch rib, can dropped
Increasing error (overall installation error) during low installation.
It is preferred that lifting the rib-lifting section to the mounting bracket by loop wheel machine, pass through the described first regulation machine
Structure adjusts the support block up and down, the end of the rib-lifting section is placed in the support block；Pass through the described second regulation machine
Limited block described in structure left and right adjusting, the step of making the side of the end of the rib-lifting section be support on the limited block, include：It is logical
The upper-lower position of the first governor motion regulation support block is crossed, the right position of limited block is adjusted by the second governor motion, and is led to
Crossing the installation position location of total powerstation detection rib-lifting section ensures the installation site of rib-lifting section and actually required installation site
Site error be less than or equal to 2mm.Upper and lower, left and right position consistency in above-below direction, left and right directions and Fig. 3.
In the present embodiment, the first governor motion is that installation settings is adjusted in the first jack on support vertical direction, second
It is the second jack being vertical on limiting plate to save mechanism, and the direction adjusted up and down and left and right adjusting direction are as shown in Figure 3
Up and down, left and right directions.
The invention also discloses a kind of bowstring arch bridge rib-lifting section mounting and positioning device (as shown in Figure 3), including：It is erected on
Mounting bracket 1 on bowstring arch bridge, the support block 11 for placing rib-lifting section and it is slidably coupled to the spacing of mounting bracket
Block 12；Wherein, for the liftable of support block 11 in mounting bracket 1, limited block 12 slides is positioned at peace by fixture afterwards in place
On dress support 1 and the side of rib-lifting section is support on limited block 12.
In the present embodiment, the installation site of the position adjustment rib-lifting section 2 by adjusting support block 11 and limited block 12, with
Meet actual installation precision, it is ensured that the site error of rib-lifting section 2 is less than or equal to 2mm.
It is preferred that the guide rail slid for limited block 12, the installation of rib-lifting section 2 are provided with mounting bracket 1 in left-right direction
Its position need to accurately be detected by total powerstation in position fixing process, by the position for constantly adjusting support block 11 and limited block 12
Put so that the position error of rib-lifting section 2 is less than or equal to 2mm.
It is preferred that support block is connected to mounting bracket by the liftable of the first jack 13.
In the present embodiment, second jack 14 can be also also installed on the direction perpendicular to limited block, second is very heavy
Top 14 is set in left-right direction, and when installation positioning is carried out to rib-lifting section 2, the side of rib-lifting section 2 is support on the second jack
On.
Left and right directions in the present embodiment is consistent with the left and right directions in Fig. 3, is specifically shown in Fig. 3.
The beneficial effects of the present invention are：
(1) linear (crooked radian) and size of rib-lifting section can accurately be controlled.
(2) the installation positioning precision of rib-lifting section can accurately be controlled.
(3) using the lifting for section rib-lifting section of growing up, arch rib quantity is reduced, reduces installation increasing error.
During actual bridge construction, multistage rib-lifting section is divided into by arch rib, after the completion of each section of rib-lifting section assembly welding
Assembly welding is carried out to multistage rib-lifting section again into required arch rib.Wherein, this can be selected in the preparation method of each section of rib-lifting section
Bowstring arch bridge rib-lifting section preparation method in invention；The installation and locating method of each section of rib-lifting section can be selected in the present invention
The installation and locating method of bar arch rib section, each section of rib-lifting section is installed in mounting bracket after having good positioning again to each adjacent
Rib-lifting section carries out assembly welding and is finally completed required bridge arch rib.
The present invention is described in detail above in association with drawings and Examples, those skilled in the art can basis
Described above makes many variations example to the present invention.Thus, some details in embodiment should not form limitation of the invention,
The present invention will be used as protection scope of the present invention using the scope that appended claims define.
Claims (10)
1. bowstring arch bridge rib-lifting section preparation method, it is characterised in that comprise the following steps：
Three-dimensional modeling is carried out to rib-lifting section and forms a rib-lifting section model, the rib-lifting section model is divided into multistage tube coupling mould
Type simultaneously carries out computer lofting to tube coupling model described in multistage, and setting-out goes out size and the position of every section of tube coupling model；
The size of tube coupling model carries out plate cutting respectively according to the multistage after computer lofting；
Pipe crimping is carried out to the sheet material after blanking, makes the both sides of the sheet material mutually draw close to form longitudinal joint；
Welding is carried out to the longitudinal joint and forms longitudinal seam, makes the sheet material weld to form pipe；
3-D scanning is carried out to the pipe by spatial digitizer and forms the point cloud model of the pipe, by the pipe
Point cloud model carries out review matching with the tube coupling model after corresponding computer lofting；
The position of tube coupling model as described in the multistage after computer lofting, Linear Error is less than certain numerical value in being matched to review
Multiple pipes are welded, and form the rib-lifting section.
2. bowstring arch bridge rib-lifting section preparation method according to claim 1, it is characterised in that in it is described to blanking after
The sheet material carries out pipe crimping, the both sides of the sheet material is mutually drawn close before the step of forming longitudinal joint, in addition to step：To described
Sheet material carries out pre-bending.
3. bowstring arch bridge rib-lifting section preparation method according to claim 1, it is characterised in that put described by computer
The position of tube coupling model described in multistage after sample, Linear Error enters less than multiple pipes of certain numerical value in being matched to review
Row welding, in the step of forming the rib-lifting section：The longitudinal seam of the adjacent pipe is mutually staggered 200mm to 400mm.
4. bowstring arch bridge rib-lifting section preparation method according to claim 1, it is characterised in that described to press computer lofting
The position of tube coupling model described in multistage afterwards, Linear Error is less than multiple pipes progress of certain numerical value in being matched to review
The step of welding, forming the rib-lifting section includes：Installation positioning is carried out to the pipe by assembled moulding bed, adjusts the circle
Relative position between pipe so that integral linear and the rib-lifting section model between the pipe it is linear between error
Less than or equal to 2mm.
5. bowstring arch bridge rib-lifting section preparation method according to claim 1, it is characterised in that put in described by computer
The position of tube coupling model described in multistage after sample, Linear Error enters less than multiple pipes of certain numerical value in being matched to review
Row welding, after the step of forming the rib-lifting section, in addition to step：By spatial digitizer to described in after the completion of welding
Rib-lifting section carries out 3-D scanning and forms the point cloud model of the rib-lifting section, by the point cloud model of the rib-lifting section and institute
State rib-lifting section model and carry out review matching.
6. the bowstring arch bridge rib-lifting section preparation method according to any one of claim 1 to 5, it is characterised in that：The arch
Rib Segment Model also includes two rib-lifting sections being parallel to each other, and is connected between two rib-lifting sections by web.
7. a kind of installation and locating method of bowstring arch bridge rib-lifting section, it is characterised in that comprise the following steps：
According to the installation site of rib-lifting section, in the mounting bracket that rib-lifting section is set up on bowstring arch bridge, the mounting bracket
Provided with support block and limited block, the mounting bracket is provided with the first governor motion for being used for adjusting the support block up and down, institute
State mounting bracket and be provided with the second governor motion for being used for limited block described in left and right adjusting；
The rib-lifting section is lifted to the mounting bracket by loop wheel machine, institute is adjusted by first governor motion up and down
Support block is stated, the end of the rib-lifting section is placed in the support block；Pass through the second governor motion left and right adjusting institute
Limited block is stated, the side of the end of the rib-lifting section is support on the limited block.
8. the installation and locating method of bowstring arch bridge rib-lifting section according to claim 7, it is characterised in that will by loop wheel machine
The rib-lifting section is lifted to the mounting bracket, is adjusted the support block up and down by first governor motion, is made institute
The end for stating rib-lifting section is placed in the support block；By limited block described in the second governor motion left and right adjusting, make institute
Stating the step of the side of the end of rib-lifting section is support on the limited block includes：The rib-lifting section is detected by total powerstation
Installation position location ensures that the site error between the installation site of the rib-lifting section and actually required installation site is less than
Equal to 2mm.
9. the installation and locating method of bowstring arch bridge rib-lifting section according to claim 7, it is characterised in that the support block
It is provided with the deep-slotted chip breaker for being used for supporting the rib-lifting section.
A kind of 10. bowstring arch bridge rib-lifting section mounting and positioning device, it is characterised in that including：
The mounting bracket being erected on bowstring arch bridge；
For placing the support block of rib-lifting section, the support block liftable is in the mounting bracket；And
It is slidably coupled to the limited block of the mounting bracket, the limited block sliding is positioned at by fixture described afterwards in place
In the mounting bracket and side of the rib-lifting section is support on the limited block.
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| CN201710979651.3A CN107841932A (en) | 2017-10-19 | 2017-10-19 | Method for manufacturing, installing and positioning tied arch bridge arch rib segment |
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| CN111395166A (en) * | 2020-02-25 | 2020-07-10 | 中铁二十四局集团浙江工程有限公司 | Tied arch bridge arch rib installation construction method |
| CN113802479A (en) * | 2021-10-29 | 2021-12-17 | 合肥工业大学 | Combined type unit support structure for dismantling tied arch bridge arch rib |
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