CN110512527A - The device and adjusting method precisely adjusted for prefabricated stand column verticality - Google Patents
The device and adjusting method precisely adjusted for prefabricated stand column verticality Download PDFInfo
- Publication number
- CN110512527A CN110512527A CN201910801168.5A CN201910801168A CN110512527A CN 110512527 A CN110512527 A CN 110512527A CN 201910801168 A CN201910801168 A CN 201910801168A CN 110512527 A CN110512527 A CN 110512527A
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- China
- Prior art keywords
- stand column
- prefabricated stand
- verticality
- anchor ear
- jack
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Links
- 238000000034 method Methods 0.000 title claims abstract description 11
- 239000003351 stiffener Substances 0.000 claims description 10
- 229910000831 Steel Inorganic materials 0.000 claims description 9
- 239000002002 slurry Substances 0.000 claims description 9
- 239000010959 steel Substances 0.000 claims description 9
- 238000010276 construction Methods 0.000 claims description 8
- 238000005452 bending Methods 0.000 claims description 5
- 235000008331 Pinus X rigitaeda Nutrition 0.000 claims description 3
- 235000011613 Pinus brutia Nutrition 0.000 claims description 3
- 241000018646 Pinus brutia Species 0.000 claims description 3
- 239000004744 fabric Substances 0.000 claims 1
- 230000009286 beneficial effect Effects 0.000 abstract description 2
- 230000001351 cycling effect Effects 0.000 abstract description 2
- 230000003252 repetitive effect Effects 0.000 abstract description 2
- 238000004364 calculation method Methods 0.000 description 2
- 210000005069 ears Anatomy 0.000 description 2
- 238000005516 engineering process Methods 0.000 description 2
- 238000004519 manufacturing process Methods 0.000 description 2
- CVOFKRWYWCSDMA-UHFFFAOYSA-N 2-chloro-n-(2,6-diethylphenyl)-n-(methoxymethyl)acetamide;2,6-dinitro-n,n-dipropyl-4-(trifluoromethyl)aniline Chemical compound CCC1=CC=CC(CC)=C1N(COC)C(=O)CCl.CCCN(CCC)C1=C([N+]([O-])=O)C=C(C(F)(F)F)C=C1[N+]([O-])=O CVOFKRWYWCSDMA-UHFFFAOYSA-N 0.000 description 1
- 238000005520 cutting process Methods 0.000 description 1
- 239000011440 grout Substances 0.000 description 1
- 238000002360 preparation method Methods 0.000 description 1
- 230000001105 regulatory effect Effects 0.000 description 1
- 238000007493 shaping process Methods 0.000 description 1
- 229910000679 solder Inorganic materials 0.000 description 1
- 230000007306 turnover Effects 0.000 description 1
- 238000003466 welding Methods 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
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- Engineering & Computer Science (AREA)
- Architecture (AREA)
- Civil Engineering (AREA)
- Structural Engineering (AREA)
- Conveying And Assembling Of Building Elements In Situ (AREA)
Abstract
The invention discloses a kind of device precisely adjusted for prefabricated stand column verticality and methods of adjustment, it is characterized in that, including lock ring in column bottom and with 4 brackets anchor ear, be placed in cushion cap Mosaic face on and prefabricated stand column bottom center under rubber cushion blocks, and it is placed in 4 jack on cushion cap and around prefabricated stand column, the quantity of jack and the quantity of bracket are identical, it is equipped with a jack immediately below each bracket, adjusts jack to reach the high-precision control of verticality of stand column.Beneficial effects of the present invention are as follows: improving the degree control precision of prefabricated stand column assembly;Improve assembled efficiency;High safety and reliability;It can be used with repetitive cycling, to save the investment of measure amount;With good universality.
Description
Technical field
The device and adjusting method that the present invention relates to a kind of precisely to be adjusted for prefabricated stand column verticality, are particularly suitable for bridge
The accurate adjusting of beam construction tonnage weight, the prefabricated stand column verticality that segment is long, size is big, it is pre- to belong to building, municipal bridge etc.
Assembled technical field processed.
Background technique
Prefabricated assembled construction technology obtains unprecedented in nationwide building and municipal field of bridge construction in recent years
Develop and universal, wherein the prefabricated assembled technology development in Shanghai is even more the forefront walked in the whole nation.In Shanghai City, municipal bridge is pre-
The form that the splicing of column and cushion cap processed mostly uses grout sleeve that Mosaic face is added to sit pulp layer is attached.
Since prefabricated stand column tonnage, length, size are generally large, the adjusting of its verticality during the assembly with cushion cap
Difficulty is larger.Although development in recent years is so that difficulty is declined, for the verticality of " high, again, greatly " prefabricated stand column
Control precision is not able to larger improvement.Common some verticality regulation measures or device operating flexibility, economy simultaneously
Property, security reliability are all poor, although the conception in terms of having some electric automatization mechanic adjustment units, theoretically meet high-precision
The requirement of degree, but its economy, economic poor, it is instantly not mature enough, can not popularization and application.
Summary of the invention
The technical problem to be solved by the present invention is it is vertical how to improve prefabricated stand column when prefabricated stand column and cushion cap splice
Degree control precision, while the problem of flexibility, the economy, security reliability, universality of safeguard measure or device.
In order to solve the above-mentioned technical problem, the technical solution of the present invention is to provide a kind of for prefabricated stand column verticality essence
The device that standard is adjusted, which is characterized in that in column bottom and anchor ear with 4 brackets, be placed in the spelling of cushion cap including lock ring
Rubber cushion blocks on junction and under prefabricated stand column bottom center, and be placed on cushion cap and around prefabricated stand column 4
A jack is equipped with a jack immediately below each bracket.
Preferably, the transversal cross-section of the anchor ear be it is rectangular or round, bracket be centrally arranged in rectangular anchor ear each
Two vertical direction of side or round anchor ear;Rubber cushion blocks are square structure, and the center on each side faces one respectively
Jack.
Preferably, the bracket is an integral structure with anchor ear;The longitudinal cross-section of anchor ear be "] " shape structure;Anchor ear packet
Web is included, the two sides up and down of web are respectively equipped with upper flange and lower wing plate;The longitudinal cross-section length of lower wing plate at bracket position
It is longer than the longitudinal cross-section length of upper flange.
Preferably, the section of the chamfering on the web, line style and prefabricated stand column is consistent.
Preferably, multiple anchor ear ribbed stiffeners are equipped between the upper flange and lower wing plate and bracket ribbed stiffener, bracket adds
Strength rib is evenly arranged on bracket, and anchor ear ribbed stiffener is evenly arranged on web.
Preferably, the anchor ear includes that at least two module fences up and is spliced, and the end of each module is equipped with envelope
Hush panel respective in module is fastened together between two neighboring module by oralia by bolt.
Preferably, the anchor ear further includes the adjusting section for adjustment module length.
A kind of adjusting method using the device precisely adjusted for prefabricated stand column verticality, which is characterized in that including with
Lower step:
Step 1, according to all cross-sectional shapes of prefabricated stand column to be assembled and size, processed using bending steel plate high-precision
Anchor ear corresponding with prefabricated stand column is made, guarantees that positive error does not occur in block length;
Step 2, review, the absolute altitude and flatness for adjusting cushion cap Mosaic face, and rubber cushion blocks are placed at Mosaic face center;
Jack is placed around Mosaic face, and guarantees the firm of jack;
Step 3, prefabricated stand column are turned over using lifting equipment, and state of being kept upright manually encircles anchor ear, lock ring is in prefabricated
Column bottom;
Step 4, lifting equipment lifting, are hung to Mosaic face for prefabricated stand column and cushion cap splice, be accurately positioned prefabricated stand column
Plan-position;
The verticality of all directions around step 5, coarse adjustment prefabricated stand column guarantees only to adjust a jack every time;Slightly
After tune, all jack are successively repeatedly finely tuned;It is prefabricated vertical that adjusting each time passes through measuring instrument simultaneous observation
Column each direction verticality situation of change, by the degree control of prefabricated stand column standardize allow within the scope of, finally
All jack are locked;
Step 6 hangs prefabricated stand column, carries out Mosaic face and sits slurry, and guarantees to avoid collision in seat slurry construction locked
Jack;It sits slurry to complete, then prefabricated stand column is hung back, check the verticality of prefabricated stand column again, at this time the general very little of deviation, only
It is locked again after needing fine-adjustment jack;After most pulp layer intensity in recoil is met the requirements, lifting equipment pine hook removes anchor ear and thousand
Jin top, the verticality for other prefabricated stand columns are adjusted.
Preferably, in the step 5, around coarse adjustment prefabricated stand column when the verticality of all directions, first coarse adjustment is pre-
Column processed verticality, the verticality of coarse adjustment left and right directions again in the front-back direction, vice versa.
The inventive system comprises the rectangular or round bending steel plate anchor ears for having 4 brackets, are added using steel plate high-precision
Work production, by encircling after high strength exploitation, lock ring is around column;Column bottom center underlay rubber cushion blocks, column energy
It is all around deflected centered on cushion block;Jack is placed under bracket, adjusts jack to reach the high-precision of verticality of stand column
Control.
Beneficial effects of the present invention are as follows:
(1) verticality regulation measure or device operating flexibility, economy, safety in existing prefabricated stand column assembly are solved
The problems such as reliability, poor degree of regulation.
(2) it accelerates verticality of stand column adjustment speed, reduce perpendicularity deviation, to improve assembled efficiency;Column
It is very steady to splice adjustment process central post between cushion cap, high safety and reliability;
(3) square device can non-conterminous two while or four whiles be arranged and adjust section, to be suitable for different cross section size
Column, and can be used with repetitive cycling, to save the investment of measure amount.
(4) there is good universality, superiority in field of bridge construction tonnage weight, that segment is long, size is big is pre-
The accurate adjusting performance of verticality of stand column processed is upper especially prominent.
Detailed description of the invention
Fig. 1 is the general arrangement of a kind of device precisely adjusted for prefabricated stand column verticality and prefabricated stand column, cushion cap;
Fig. 2-1 is the top view of anchor ear in Fig. 1;
Fig. 2-2 is the bottom view of anchor ear in Fig. 1;
Fig. 2-3 is a-a cross-sectional view in Fig. 2-1;
Fig. 2-4 is b-b cross-sectional view in Fig. 2-1;
Fig. 2-5 is c-c cross-sectional view in Fig. 2-1;
Fig. 2-6 is d-d cross-sectional view in Fig. 2-1;
Fig. 2-7 is e-e cross-sectional view in Fig. 2-1.
Specific embodiment
In order to make the present invention more obvious and understandable, hereby with preferred embodiment, and attached drawing is cooperated to be described in detail below.
Embodiment 1
The present invention is a kind of device precisely adjusted for prefabricated stand column verticality, as shown in Fig. 1 to Fig. 2-7 comprising
The transversal cross-section of bracket 12 is rectangular or circular anchor ear, is placed in 1 bottom of prefabricated stand column on 11 Mosaic face of cushion cap with there are four
Square rubber cushion block 10 under the center of face, and be placed in prefabricated stand column 1 on cushion cap 11 all around four direction thousand
Jin top 9.Wherein, the quantity of jack 9 is identical as the quantity of bracket 12, and the underface of each bracket 12 is equipped with a jack
9。
Bracket 12 is an integral structure with anchor ear, the longitudinal cross-section of anchor ear be similar to channel steel "] " shape structure, such as Fig. 2-
Shown in 7, anchor ear includes web 2, and the two sides up and down of web 2 are respectively equipped with upper flange 3 and lower wing plate 4, at 12 position of bracket under
The longitudinal cross-section length of wing plate 4 is longer than the longitudinal cross-section length of upper flange 3, as shown in Figure 2-5.
Web 2 keeps height consistent by high-strength bending steel plate machine-shaping, chamfering, line style and 1 section of prefabricated stand column;
The upper flange 3 and lower wing plate 4 of anchor ear are formed by high strength steel plate Numerical control cutting, and upper flange 3 and lower wing plate 4 are welded on web 2,
Multiple anchor ear ribbed stiffeners 5 and bracket ribbed stiffener 6 are equipped between upper flange 3 and lower wing plate 4, as shown in Fig. 2-4, Fig. 2-6, bracket adds
Strength rib 6 is evenly arranged on bracket 12, and anchor ear ribbed stiffener 5 is evenly arranged on web 2.
According to the size of the ring of anchor ear, it is divided into two or four module and fences up jointly spicing forming type, can also add adjusting
Section, but need to guarantee that bracket 12 is located at the middle position on each side of anchor ear, while guaranteeing that block length avoids the occurrence of positive error;Module
"] " shape end solder up plate 7, as Figure 2-3, hush panel 7 opens up a certain number of bolts hole, module according to Force Calculation
It is connected between end using high-intensitive bolt 8.
In the present embodiment, by two module making spelling squarely anchor ears.
With placement square rubber cushion block 10 under 1 bottom center of prefabricated stand column on 11 Mosaic face of cushion cap, guarantee prefabricated vertical
Column 1 can centered on rubber cushion blocks 10 deflection forwards, backwards.
Anchor ear is encircled, lock ring is at 1 distance from bottom cushion cap of prefabricated stand column, 11 Mosaic face certain position, by being placed in cushion cap
The adjusting very heavy 9 of four 12 corresponding positions of bracket of 1 anchor ear of prefabricated stand column accurately adjusts the vertical of prefabricated stand column 1 on 11
Degree.
Concrete construction method of the invention:
(1) cross-sectional shape and size all according to engineering prefabricated stand column 1 to be assembled consider duration, number of turnover etc.
Factor determines type, size and the quantity that anchor ear needs to process;The ruler for determining each component part of anchor ear is analyzed by Force Calculation
Very little, steel plate thickness, bolt size etc.;
(2) bending steel plate high-precision processing and fabricating anchor ear is used, guarantees welding quality, and block length is not corrected errors
Difference, corresponding process mechanized production in factory;Carry out preassembling is processed, every deviation in allowed limits and is tested
Folding lattice rear can be used;
(3) before prefabricated stand column 1 lifts, review adjusts the absolute altitude of the Mosaic face spliced on cushion cap 11 with prefabricated stand column 1 and puts down
Whole degree after acceptance(check), places rubber cushion blocks 10 at Mosaic face center, places and meet and column weight phase in Mosaic face surrounding
Matched jack 9, and guarantee the firm of jack 9, the preparation before setting up measuring instrument and other assembly;
(4) it after 1 site acceptance of prefabricated stand column is qualified, is turned over using lifting equipment, state of being kept upright, manually by anchor ear ring
It embraces, lock ring is in 1 bottom of prefabricated stand column;
(5) lifting equipment lifts by crane, and prefabricated stand column 1 is hung to Mosaic face and is spliced with cushion cap 11, is accurately positioned prefabricated stand column 1
Plan-position (separately has other measures to carry out plan-position adjusting, will herein be described in detail);
(6) first coarse adjustment prefabricated stand column 1 verticality, the verticality of coarse adjustment left and right directions again in the front-back direction, otherwise also
Can, guarantee only to adjust a jack 9 every time;After coarse adjustment, four jack 9 are successively repeatedly finely tuned.Tune each time
Verticality situation of change of the section by measuring instrument simultaneous observation prefabricated stand column 1 in each direction, by the vertical of prefabricated stand column 1
Degree control finally locks four jack 9 within the scope of standardizing allows;
(7) it by the way that after step (6), prefabricated stand column 1 is hung, carries out Mosaic face and sits slurry, and guarantee to sit in slurry construction and avoid
Collide locked jack 9;It sits slurry to complete, then prefabricated stand column 1 is hung back, check the verticality of prefabricated stand column 1 again, at this time
The general very little of deviation only needs fine-adjustment jack 9 to lock again;After most pulp layer intensity in recoil is met the requirements, lifting equipment pine
Hook removes regulating device (as anchor ear and jack 9), and the verticality for other prefabricated stand columns 1 is adjusted.
Embodiment 2
In the present embodiment, be combined into round anchor ear by 4 module making groups, non-conterminous two while or four whiles add adjusting
The device of section.
Other are same as Example 1.
Claims (9)
1. a kind of device precisely adjusted for prefabricated stand column verticality, which is characterized in that including lock ring in column (1) bottom and
Anchor ear with 4 brackets (12) is placed in rubber on the Mosaic face of cushion cap (11) and under prefabricated stand column (1) bottom center
Rubber mat block (10), and it is placed in 4 jack (9) on cushion cap (11) and around prefabricated stand column (1), each bracket (12)
Underface be equipped with a jack (9).
2. a kind of device precisely adjusted for prefabricated stand column verticality as described in claim 1, which is characterized in that described
The transversal cross-section of anchor ear be it is rectangular or round, bracket (12) is centrally arranged two in each side of rectangular anchor ear or round anchor ear
Vertical direction;Rubber cushion blocks (10) are square structure, and the center on each side faces a jack (9) respectively.
3. a kind of device precisely adjusted for prefabricated stand column verticality as described in claim 1, which is characterized in that described
Bracket (12) is an integral structure with anchor ear;The longitudinal cross-section of anchor ear be "] " shape structure;Anchor ear includes web (2), web (2)
Two sides up and down be respectively equipped with upper flange (3) and lower wing plate (4);The longitudinal cross-section of lower wing plate (4) at bracket (12) position is long
Degree is longer than the longitudinal cross-section length of upper flange (3).
4. a kind of device precisely adjusted for prefabricated stand column verticality as claimed in claim 3, which is characterized in that described
The section of chamfering, line style and prefabricated stand column (1) on web (2) is consistent.
5. a kind of device precisely adjusted for prefabricated stand column verticality as claimed in claim 3, which is characterized in that described
Multiple anchor ear ribbed stiffeners (5) and bracket ribbed stiffener (6) are equipped between upper flange (3) and lower wing plate (4), bracket ribbed stiffener (6) is equal
On bracket (12), anchor ear ribbed stiffener (5) is evenly arranged on web (2) cloth.
6. a kind of device precisely adjusted for prefabricated stand column verticality as claimed in claim 1 or 3, which is characterized in that institute
The anchor ear stated includes that at least two module fences up and is spliced, and the end of each module is equipped with hush panel (7), two neighboring
Hush panel (7) respective in module is fastened together by bolt (8) between module.
7. a kind of device precisely adjusted for prefabricated stand column verticality as claimed in claim 6, which is characterized in that described
Anchor ear further includes the adjusting section for adjustment module length.
8. a kind of tune using the device precisely adjusted for prefabricated stand column verticality as described in claim 1-7 any one
Section method, which comprises the following steps:
Step 1, according to prefabricated stand column (1) to be assembled all cross-sectional shape and size, processed using bending steel plate high-precision
Anchor ear corresponding with prefabricated stand column (1) is made, guarantees that positive error does not occur in block length;
Step 2, review, the absolute altitude and flatness for adjusting cushion cap (11) Mosaic face, and rubber cushion blocks are placed at Mosaic face center
(10);Jack (9) are placed around Mosaic face, and guarantee the firm of jack (9);
Step 3, prefabricated stand column (1) are turned over using lifting equipment, and state of being kept upright manually encircles anchor ear, lock ring is in prefabricated
Column (1) bottom;
Step 4, lifting equipment lifting, are hung to Mosaic face for prefabricated stand column (1) and cushion cap (11) splice, be accurately positioned prefabricated stand column
(1) plan-position;
The verticality of step 5, coarse adjustment prefabricated stand column (1) surrounding all directions guarantees only to adjust a jack (9) every time;
After coarse adjustment, all jack (9) are successively repeatedly finely tuned;It is pre- that adjusting each time passes through measuring instrument simultaneous observation
Verticality situation of change of the column (1) processed in each direction, the range that the degree control of prefabricated stand column (1) is allowed in specification
Within, it is finally that all jack (9) is locked;
Step 6 hangs prefabricated stand column (1), carries out Mosaic face and sits slurry, and guarantees to sit in slurry construction and avoid collision locked thousand
Jin top (9);It sits slurry to complete, then prefabricated stand column (1) is hung back, check the verticality of prefabricated stand column (1) again, deviation is general at this time
Very little locks again after only needing fine-adjustment jack (9);After most pulp layer intensity in recoil is met the requirements, lifting equipment pine hook is torn open
Except anchor ear and jack (9), the verticality for other prefabricated stand columns (1) is adjusted.
9. as claimed in claim 8 a kind of for the accurate adjusting method of prefabricated stand column verticality, which is characterized in that the step
In rapid 5, when the verticality of coarse adjustment prefabricated stand column (1) surrounding all directions, first coarse adjustment prefabricated stand column (1) is hung down in the front-back direction
The verticality of straight degree, again coarse adjustment left and right directions, vice versa.
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CN201910801168.5A CN110512527A (en) | 2019-08-28 | 2019-08-28 | The device and adjusting method precisely adjusted for prefabricated stand column verticality |
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CN201910801168.5A CN110512527A (en) | 2019-08-28 | 2019-08-28 | The device and adjusting method precisely adjusted for prefabricated stand column verticality |
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Cited By (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
CN110878538A (en) * | 2019-12-14 | 2020-03-13 | 陕西煤业化工技术研究院有限责任公司 | Road safety protection facility upright post center distance adjusting tool and using method thereof |
CN111411779A (en) * | 2020-03-30 | 2020-07-14 | 中国五冶集团有限公司 | Quickly-adjustable curve pipe truss pre-assembling tool and assembling and adjusting method thereof |
CN114508238A (en) * | 2022-03-30 | 2022-05-17 | 中国建筑第四工程局有限公司 | High-precision mounting system and mounting method for rear-mounted inclined steel column |
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CN101748729A (en) * | 2009-12-23 | 2010-06-23 | 中国建筑第六工程局有限公司 | Method for adjusting verticality of tubular pile sunk by hammer |
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CN105951600A (en) * | 2016-06-07 | 2016-09-21 | 上海公路投资建设发展有限公司 | Splicing and positioning method and device for prefabricated stand column and bearing platform |
CN205857035U (en) * | 2016-06-07 | 2017-01-04 | 上海公路投资建设发展有限公司 | A kind of prefabricated stand column and the assembled positioner of cushion cap |
CN107100078A (en) * | 2017-05-19 | 2017-08-29 | 中国五冶集团有限公司 | A kind of packaged type bridges Precast Pier Columns component installation method |
CN207048368U (en) * | 2017-06-09 | 2018-02-27 | 上海市机械施工集团有限公司 | A kind of adjustable anchor ear device |
CN209307841U (en) * | 2018-12-07 | 2019-08-27 | 四川交投建设工程股份有限公司 | Single column pier steel plate combination bent cap ruggedized construction |
CN211036707U (en) * | 2019-08-28 | 2020-07-17 | 上海绿地建设(集团)有限公司 | Device for accurately adjusting verticality of prefabricated stand column |
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CN101748729A (en) * | 2009-12-23 | 2010-06-23 | 中国建筑第六工程局有限公司 | Method for adjusting verticality of tubular pile sunk by hammer |
CN203603586U (en) * | 2013-11-27 | 2014-05-21 | 湖南省送变电工程公司 | Equipment support regulating device |
CN105951600A (en) * | 2016-06-07 | 2016-09-21 | 上海公路投资建设发展有限公司 | Splicing and positioning method and device for prefabricated stand column and bearing platform |
CN205857035U (en) * | 2016-06-07 | 2017-01-04 | 上海公路投资建设发展有限公司 | A kind of prefabricated stand column and the assembled positioner of cushion cap |
CN107100078A (en) * | 2017-05-19 | 2017-08-29 | 中国五冶集团有限公司 | A kind of packaged type bridges Precast Pier Columns component installation method |
CN207048368U (en) * | 2017-06-09 | 2018-02-27 | 上海市机械施工集团有限公司 | A kind of adjustable anchor ear device |
CN209307841U (en) * | 2018-12-07 | 2019-08-27 | 四川交投建设工程股份有限公司 | Single column pier steel plate combination bent cap ruggedized construction |
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Cited By (3)
Publication number | Priority date | Publication date | Assignee | Title |
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CN110878538A (en) * | 2019-12-14 | 2020-03-13 | 陕西煤业化工技术研究院有限责任公司 | Road safety protection facility upright post center distance adjusting tool and using method thereof |
CN111411779A (en) * | 2020-03-30 | 2020-07-14 | 中国五冶集团有限公司 | Quickly-adjustable curve pipe truss pre-assembling tool and assembling and adjusting method thereof |
CN114508238A (en) * | 2022-03-30 | 2022-05-17 | 中国建筑第四工程局有限公司 | High-precision mounting system and mounting method for rear-mounted inclined steel column |
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