CN108867420A - All-hydraulic automatically walk culvert abutment body trolley and construction technology process - Google Patents
All-hydraulic automatically walk culvert abutment body trolley and construction technology process Download PDFInfo
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- CN108867420A CN108867420A CN201811085564.4A CN201811085564A CN108867420A CN 108867420 A CN108867420 A CN 108867420A CN 201811085564 A CN201811085564 A CN 201811085564A CN 108867420 A CN108867420 A CN 108867420A
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- 238000010276 construction Methods 0.000 title claims abstract description 23
- 238000000034 method Methods 0.000 title claims abstract description 10
- 238000005516 engineering process Methods 0.000 title claims abstract description 9
- 230000008569 process Effects 0.000 title claims abstract description 9
- 229910000831 Steel Inorganic materials 0.000 claims abstract description 15
- 239000010959 steel Substances 0.000 claims abstract description 15
- 238000009826 distribution Methods 0.000 claims abstract description 5
- 241000531807 Psophiidae Species 0.000 claims description 12
- 230000003014 reinforcing effect Effects 0.000 claims description 7
- 239000010720 hydraulic oil Substances 0.000 claims description 6
- 238000010010 raising Methods 0.000 claims description 6
- 230000015271 coagulation Effects 0.000 claims description 4
- 238000005345 coagulation Methods 0.000 claims description 4
- 239000003921 oil Substances 0.000 claims description 4
- 241000288140 Gruiformes Species 0.000 claims description 3
- 235000003283 Pachira macrocarpa Nutrition 0.000 claims description 3
- 241001083492 Trapa Species 0.000 claims description 3
- 235000014364 Trapa natans Nutrition 0.000 claims description 3
- 238000013461 design Methods 0.000 claims description 3
- 230000007246 mechanism Effects 0.000 claims description 3
- 235000009165 saligot Nutrition 0.000 claims description 3
- 238000012360 testing method Methods 0.000 claims description 3
- 239000000203 mixture Substances 0.000 claims description 2
- 238000009415 formwork Methods 0.000 description 6
- 238000010586 diagram Methods 0.000 description 4
- 239000007788 liquid Substances 0.000 description 4
- 238000003466 welding Methods 0.000 description 4
- 230000008602 contraction Effects 0.000 description 2
- 238000009416 shuttering Methods 0.000 description 2
- 206010023204 Joint dislocation Diseases 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 239000011449 brick Substances 0.000 description 1
- 238000005266 casting Methods 0.000 description 1
- 239000003638 chemical reducing agent Substances 0.000 description 1
- 238000005056 compaction Methods 0.000 description 1
- 239000008358 core component Substances 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 238000011156 evaluation Methods 0.000 description 1
- 230000006872 improvement Effects 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 239000000463 material Substances 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 238000000465 moulding Methods 0.000 description 1
- 230000002787 reinforcement Effects 0.000 description 1
- 239000002689 soil Substances 0.000 description 1
Classifications
-
- E—FIXED CONSTRUCTIONS
- E01—CONSTRUCTION OF ROADS, RAILWAYS, OR BRIDGES
- E01F—ADDITIONAL WORK, SUCH AS EQUIPPING ROADS OR THE CONSTRUCTION OF PLATFORMS, HELICOPTER LANDING STAGES, SIGNS, SNOW FENCES, OR THE LIKE
- E01F5/00—Draining the sub-base, i.e. subgrade or ground-work, e.g. embankment of roads or of the ballastway of railways or draining-off road surface or ballastway drainage by trenches, culverts, or conduits or other specially adapted means
- E01F5/005—Culverts ; Head-structures for culverts, or for drainage-conduit outlets in slopes
-
- E—FIXED CONSTRUCTIONS
- E21—EARTH OR ROCK DRILLING; MINING
- E21D—SHAFTS; TUNNELS; GALLERIES; LARGE UNDERGROUND CHAMBERS
- E21D11/00—Lining tunnels, galleries or other underground cavities, e.g. large underground chambers; Linings therefor; Making such linings in situ, e.g. by assembling
- E21D11/04—Lining with building materials
- E21D11/10—Lining with building materials with concrete cast in situ; Shuttering also lost shutterings, e.g. made of blocks, of metal plates or other equipment adapted therefor
- E21D11/102—Removable shuttering; Bearing or supporting devices therefor
-
- E—FIXED CONSTRUCTIONS
- E21—EARTH OR ROCK DRILLING; MINING
- E21D—SHAFTS; TUNNELS; GALLERIES; LARGE UNDERGROUND CHAMBERS
- E21D11/00—Lining tunnels, galleries or other underground cavities, e.g. large underground chambers; Linings therefor; Making such linings in situ, e.g. by assembling
- E21D11/04—Lining with building materials
- E21D11/10—Lining with building materials with concrete cast in situ; Shuttering also lost shutterings, e.g. made of blocks, of metal plates or other equipment adapted therefor
- E21D11/105—Transport or application of concrete specially adapted for the lining of tunnels or galleries ; Backfilling the space between main building element and the surrounding rock, e.g. with concrete
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- Engineering & Computer Science (AREA)
- Structural Engineering (AREA)
- Architecture (AREA)
- Mining & Mineral Resources (AREA)
- Civil Engineering (AREA)
- Life Sciences & Earth Sciences (AREA)
- General Life Sciences & Earth Sciences (AREA)
- Geochemistry & Mineralogy (AREA)
- Geology (AREA)
- On-Site Construction Work That Accompanies The Preparation And Application Of Concrete (AREA)
Abstract
The invention discloses a kind of all-hydraulic automatically walk culvert abutment body trolleys, including traveling wheel, walking bottom framework, track, main mould plate framework, internal model, external mold, hydraulic system, vibrational system and distribution system, the internal model and external mold are that monolithic construction is fixed on steel body frame, the internal model, it is connected between external mold and main mould plate framework by demoulding system, the demoulding system includes set on several hydraulic cylinders between main mould plate framework and template, the vibrational system includes several form vibrators, the form vibrator is installed in inner template and external mold plate framework.The present invention discloses a kind of construction technology process of all-hydraulic automatically walk culvert abutment body trolley.The problem of present invention preferably solves the form joint faulting of slab ends occurred during culvert construction, and template assembly takes a long time, and how when form removable is protected finished product concrete.Working efficiency and operating cost are effectively raised, the income of labor operation person is increased.
Description
Technical field
It is wide that the present invention relates to scope of uses, is mainly used in the construction that highway engineering Culvert engineering contains platform, is a kind of operation
Simplicity guarantees presentation quality, saves the construction equipment of human resources.
Background technique
Still largely bridges and culverts structure is pacified using assembled formwork in existing highway engineering culvert abutment body construction
Dress pours, and occurs joint dislocation of formwork in work progress and does not meet《Road Engineering Quality Checking And Evaluation standard》Requirement.It pours
Occurs swollen mould situation in the process, shuttering supporting is not in place.Go out due to human factor disassembly is not removed according to process when form removal
The problems such as now falling stupefied arrisdefect.Traditional construction technology, maximum defect are as follows：
1. template assembly and supporting need to use a large amount of hack lever and template, consumption of materials is big, can not save the cost.
2. scene need to be more with personnel, operation team disbursement is higher.
3. operating personnel is more, existing security risk risk increases, unfavorable to security control.
Under the conditions of existing construction technology, high-grade highway culvert requires to attain a yet higher goal.How machine is preferably realized
Tool, standardization are the major issues for continuing to solve that we are faced now.
Summary of the invention
To solve the above problem present in the prior art and actual conditions, the present invention provides a kind of all-hydraulic automatically walk
Culvert abutment body trolley, including traveling wheel, walking bottom framework, track, main mould plate framework, internal model, external mold, hydraulic system, vibration system
Traveling wheel is arranged below in system and distribution system, the walking bottom framework, and the main mould plate framework is located above walking bottom framework, institute
It states internal model and external mold is that monolithic construction is fixed on steel body frame, pass through between the internal model, external mold and main mould plate framework
The connection of demoulding system, the demoulding system include set on several hydraulic cylinders between main mould plate framework and template, hydraulic cylinder
Cylinder barrel be connected in end with main mould plate framework or template, the end of piston rod is connected with template or main mould plate framework, institute
The inside that internal model is located at external mold is stated, the vibrational system includes several form vibrators, and the form vibrator is installed on
In inner template and external mold plate framework.
Preferably, trolley traveling bottom framework with a thickness of 300 × 200 × 10 rectangular steel pipes by being welded.
Preferably, the wheel shaft centre distance orbital plane 15cm of the traveling wheel.
Preferably, internal model and external mold are panel with a thickness of 8mm steel plate by No. 18 channel steels welding body frames.
Preferably, the hydraulic system is made of hydraulic power unit, hydraulic oil pipe and hydraulic oil discharge mechanism.
Present invention simultaneously provides a kind of construction technology process of above-mentioned all-hydraulic automatically walk culvert abutment body trolley：
1) trolley assembles in place：
It is required that basis is smooth；Track is linked away from 84cm according to orbit centre；Truck crane lifts on main frame to track, lifting
Then internal model link hydraulic cylinder lifts external mold and is fixed temporarily and lifts external mold main frame again, finally link oil cylinder and power on and liquid
Pressure pipe road；
No load test：
Trial operation walking and the whether comfortable trouble-free operation of hydraulic system, wall size is contained in adjustment compartment makes hydraulic cylinder to design
Position has bound reinforcing bar and then trolley has been promoted to pour, and attached type vibrator is first lower and upper both sides pour gradually to vibrate and prevent simultaneously
Mould vehicle integral shift；
3, internal model is detached from：
Equal concrete coagulations are to can be with demoulding time, release platform cap and wall chain connecting bolt 3cm first, oriented manipulation platform liquid
Bottom water chestnut is packed up on left No. 1 of the pressure handle right side 1, then wall form free-falling 3cm shrinks the left 2 trumpeter's handles in the right side 2 and shrinks wall master
Template 5cm-10cm, while shrinking the left 3 trumpeter's handles in the right side 3 and make platform cap and master module outreach raising simultaneously, internal model disengaging finishes；
4) external mold is detached from：The right 4 trumpeter's handles in a left side 4, which are shunk, is detached from external mold, and the right 5 trumpeter's handle raisings in a left side 5 lift external mold and are detached from ground,
Having bound reinforcing bar promotes trolley to carry out next mould, and attached vibrator button is dubbed before demoulding prevents concrete bonding template.
The all-hydraulic automatically walk culvert abutment body trolley construction of the present invention, preferably solves the mould occurred during culvert construction
The problem of plate seam faulting of slab ends, template assembly take a long time, and how when form removable is protected finished product concrete.Effectively mention
High working efficiency and operating cost, increase the income of labor operation person.
Beneficial effect：
1, using all-hydraulic automatically walk culvert abutment body trolley, avoid that template assembly, hack lever support is not in place is occurred
Swollen mould, faulting of slab ends, piece.More satisfied product has been surrendered for client.
2, make culvert job execution more mechanization, reduce personnel depaly, reduce security risk.One culvert abutment body coagulation
Soil construction only needs 4 people of personnel.Profit margin preferably is created for operation team, operating personnel can be allowed to obtain more
Return.
3, project cost expenditure is reduced, the quantity of template and the quantity of steel tube frame are reduced.It is active and effective to be
Project cost control increases brick and adds watt.
4, abutment body, the molding of platform cap one-time-concreting, accelerate speed of application, effectively shorten the construction period, improve work
Cheng Jindu.
Detailed description of the invention
Fig. 1 is the cross-section diagram of the all-hydraulic automatically walk culvert abutment body trolley of the embodiment of the present invention.
Fig. 2 is the structural schematic diagram of the exterior sheathing of the all-hydraulic automatically walk culvert abutment body trolley of the embodiment of the present invention.
Fig. 3 is the structural schematic diagram of the inner template of the all-hydraulic automatically walk culvert abutment body trolley of the embodiment of the present invention.
Fig. 4 is the structural schematic diagram of the big frame of the all-hydraulic automatically walk culvert abutment body trolley of the embodiment of the present invention.
Specific embodiment
(1) all-hydraulic automatically walk culvert abutment body trolley production method：
Box culvert steel formwork trolley is by walking bottom framework 12, main mould plate framework 13, internal model 14, external mold 15, hydraulic system, vibration
System and distribution system composition.
1, trolley traveling bottom framework 12 with a thickness of 300 × 200 × 10 rectangular steel pipes by being welded.Welding process weld seam is strong
Degree must satisfy code requirement.Traveling wheel 11 will be installed in parallel, wheel shaft centre distance orbital plane 15cm, movable motor and speed reducer
It is installed according to actual size.Trolley traveling speed is 5m/min.
2, main mould plate framework 13 is trolley core component.It is welded by 320 × 200 × 10 H profile steel.Main frame is not only
The body frame that the contraction or external mold for shoring internal model are shunk.It needs absolutely to control effective dimensions in welding.
3, internal model 14 and external mold 15 are panel with a thickness of 8mm steel plate by No. 18 channel steels welding body frames.
4, hydraulic system is made of hydraulic power unit, hydraulic oil pipe and hydraulic oil discharge mechanism.Hydraulic power unit installs multi-way valve
Door meets the contraction support of trolley internal model and external mold.Every set oil circuit is equipped with four sets of hydraulic cylinders.
5, trolley is equipped with form vibrator according to panel area, is mounted on template framework, it is ensured that concrete compaction.
6, trolley is furnished with open circuit protection power distribution cabinet, protects trolley circuit.
In figure, 16 be demoulding system.
(2) all-hydraulic automatically walk culvert abutment body trolley construction technology process：
1, trolley assembles in place：
It is required that basis is smooth；Track is linked away from 84cm according to orbit centre.Truck crane lifts on main frame to track, lifting
Then internal model link hydraulic cylinder lifts external mold and is fixed temporarily and lifts external mold main frame again, finally link oil cylinder and power on and liquid
Pressure pipe road！
No load test：
Trial operation walking and the whether comfortable trouble-free operation of hydraulic system, wall size is contained in adjustment compartment makes hydraulic cylinder to design
Position has bound reinforcing bar and then trolley has been promoted to pour.Attached type vibrator is first lower and upper both sides pour gradually to vibrate and prevent simultaneously
Mould vehicle integral shift.
3, internal model is detached from：(a handle left side 1,2,3,4,5, the right side 1,2,3,4,5)
Equal concrete coagulations are to can be with demoulding time, release platform cap and wall chain connecting bolt 3cm first, oriented manipulation platform liquid
Bottom water chestnut is packed up on left No. 1 of the pressure handle right side 1, then wall form free-falling 3cm shrinks the left 2 trumpeter's handles in the right side 2 and shrinks wall master
Template (5cm-10cm) shrinks the left 3 trumpeter's handles in the right side 3 simultaneously makes platform cap and master module outreach raising simultaneously, and internal model disengaging finishes.
4, external mold is detached from：(a handle left side 1,2,3,4,5, the right side 1,2,3,4,5)
The right 4 trumpeter's handles in a left side 4, which are shunk, is detached from external mold.The right 5 trumpeter's handle raisings in a left side 5 lift external mold and are detached from ground.Reinforcing bar is bound
Trolley is promoted to carry out next mould.Attached vibrator button is dubbed before demoulding prevents concrete bonding template.
Five attached vibrators are distributed inside and outside all-hydraulic automatically walk culvert trolley, to internal vibration stick into
It has gone reinforcement, has preferably guaranteed the presentation quality of concrete.
(3) all-hydraulic automatically walk culvert abutment body trolley construction characteristic：
1, monoblock type template can guarantee that culvert abutment body does not occur faulting of slab ends and piece.
2, the drawbacks of hydraulic support system is supported by the integrated hydraulic to template, reduces manual demolition template.
3, formwork jumbo realizes the one-time formed perfect combination of abutment body platform cap, avoids because platform cap shuttering supporting is because reinforcing
Problem and the faulting of slab ends occurred.
4, self-propelled formwork jumbo is controlled by track operating system, after the completion of pouring, makes Schaltisch by self-operating device
Vehicle in axial direction relies on track average rate to move ahead, and ensure that the coaxial flat, straight, suitable of stepping casting concrete.
5, the quality of vibrating that concrete is strengthened using attached vibrator, improves construction technology.
Formwork jumbo can be increased according to culvert actual table height, can be widely used in culvert abutment body and pour.
2018, in Gansu, perseverance reached the garden G215 Xian Liu to the Dunhuang highway work that road and bridge engineering Group Co., Ltd undertakes the construction of
The invention device has been used in journey PPP project.The hydraulic automatically walk trolley is fast with seating velocity, work efficiency is high, wind resistance
The advantages that husky ability is strong, mobile flexible.The hydraulic automatically walk trolley efficiently solves in culvert abutment body work progress, occurs
The technical problems such as thickness of protection tier is difficult to control, form joint faulting of slab ends, concrete leakiness.The trolley platform cap, wall can
Primary concreting, works overall appearance quality is good after the completion of pouring；Template efficiently utilizes, the construction period shortens, cost drop
It is low obvious.
The foregoing is only a preferred embodiment of the present invention, is not intended to restrict the invention, although referring to aforementioned reality
Applying example, invention is explained in detail, for those skilled in the art, still can be to aforementioned each implementation
Technical solution documented by example is modified or equivalent replacement of some of the technical features.It is all in essence of the invention
Within mind and principle, any modification, equivalent replacement, improvement and so on be should all be included in the protection scope of the present invention.
Claims (6)
1. a kind of all-hydraulic automatically walk culvert abutment body trolley, which is characterized in that including traveling wheel, walking bottom framework, track, master
Traveling wheel is arranged below in template framework, internal model, external mold, hydraulic system, vibrational system and distribution system, the walking bottom framework,
The main mould plate framework is located above walking bottom framework, and the internal model and external mold are that monolithic construction is fixed at steel body frame
On, it is connected between the internal model, external mold and main mould plate framework by demoulding system, the demoulding system includes being set to main mould sheet frame
The cylinder barrel of several hydraulic cylinders between frame and template, hydraulic cylinder is connected in end with main mould plate framework or template, piston
The end of bar is connected with template or main mould plate framework, and the internal model is located at the inside of external mold, and the vibrational system includes several
Form vibrator, the form vibrator are installed in inner template and external mold plate framework.
2. all-hydraulic automatically walk culvert abutment body trolley according to claim 1, which is characterized in that trolley traveling bottom framework
By being welded with a thickness of 300 × 200 × 10 rectangular steel pipes.
3. the all-hydraulic automatically walk culvert abutment body trolley according to claim, which is characterized in that the wheel of the traveling wheel
Axis center is apart from orbital plane 15cm.
4. all-hydraulic automatically walk culvert abutment body trolley according to claim 1, which is characterized in that internal model and external mold are by 18
Number channel steel welds body frame, is panel with a thickness of 8mm steel plate.
5. all-hydraulic automatically walk culvert abutment body trolley according to claim 1, which is characterized in that the hydraulic system by
Hydraulic power unit, hydraulic oil pipe and hydraulic oil discharge mechanism composition.
6. a kind of construction technology process of all-hydraulic automatically walk culvert abutment body trolley of any of claims 1-5：
1) trolley assembles in place：
It is required that basis is smooth；Track is linked away from 84cm according to orbit centre；Truck crane lifts on main frame to track, lifts internal model
Then link hydraulic cylinder lifts external mold and is fixed temporarily and lifts external mold main frame again, finally link oil cylinder and power on and hydraulic tube
Road；
No load test：
Trial operation walking and the whether comfortable trouble-free operation of hydraulic system, wall size is contained in adjustment compartment makes hydraulic cylinder to design portion
Position has bound reinforcing bar and then trolley has been promoted to pour, and attached type vibrator is first lower and upper both sides pour gradually to vibrate and prevent mould simultaneously
Vehicle integral shift；
3, internal model is detached from：
Equal concrete coagulations are to can be with demoulding time, release platform cap and wall chain connecting bolt 3cm first, the hydraulic hand of oriented manipulation platform
Bottom water chestnut is packed up on left No. 1 of the handle right side 1, then wall form free-falling 3cm shrinks the left 2 trumpeter's handles in the right side 2 and shrinks wall master module
5cm-10cm, while shrinking the left 3 trumpeter's handles in the right side 3 and make platform cap and master module outreach raising simultaneously, internal model disengaging finishes；
4) external mold is detached from：The right 4 trumpeter's handles in a left side 4, which are shunk, is detached from external mold, and the right 5 trumpeter's handle raisings in a left side 5 lift external mold and are detached from ground, binding
Good reinforcing bar promotes trolley to carry out next mould, and attached vibrator button is dubbed before demoulding prevents concrete bonding template.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201811085564.4A CN108867420A (en) | 2018-09-18 | 2018-09-18 | All-hydraulic automatically walk culvert abutment body trolley and construction technology process |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201811085564.4A CN108867420A (en) | 2018-09-18 | 2018-09-18 | All-hydraulic automatically walk culvert abutment body trolley and construction technology process |
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| Publication Number | Publication Date |
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| CN108867420A true CN108867420A (en) | 2018-11-23 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201811085564.4A Pending CN108867420A (en) | 2018-09-18 | 2018-09-18 | All-hydraulic automatically walk culvert abutment body trolley and construction technology process |
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Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110315465A (en) * | 2019-08-06 | 2019-10-11 | 安徽水利开发有限公司 | Culvert merogenesis steel lining auxiliary installation device |
| CN110468748A (en) * | 2019-08-08 | 2019-11-19 | 福建祝融工程机械有限公司 | A kind of culvert trolley |
| CN111809536A (en) * | 2020-08-07 | 2020-10-23 | 中铁五局集团建筑工程有限责任公司 | Integrally-moving box culvert template and construction method thereof |
| CN112779929A (en) * | 2021-02-08 | 2021-05-11 | 北京场道市政工程集团有限公司 | Pouring and installing method of comprehensive pipe gallery |
| CN113047189A (en) * | 2021-03-24 | 2021-06-29 | 中国五冶集团有限公司 | Movable formwork for culvert construction |
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| KR101372261B1 (en) * | 2013-01-23 | 2014-03-10 | 현대알루미늄(주) | Box form structure for culvert construction |
| CN104533456A (en) * | 2014-12-15 | 2015-04-22 | 中铁上海工程局集团有限公司 | Super-large section chamber reinforced concrete modelling construction method |
| CN104632251A (en) * | 2014-12-31 | 2015-05-20 | 上海市机械施工集团有限公司 | Integrally cast type mould plate trolley and construction method of concrete pouring of underground passage |
| CN106906758A (en) * | 2017-04-27 | 2017-06-30 | 中交二公局东萌工程有限公司 | A kind of culvert fluid pressure type entire combination moving die plate |
| CN209162667U (en) * | 2018-09-18 | 2019-07-26 | 甘肃恒捷路桥养护科技有限公司 | All-hydraulic automatically walk culvert abutment body trolley |
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2018
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Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
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| KR101372261B1 (en) * | 2013-01-23 | 2014-03-10 | 현대알루미늄(주) | Box form structure for culvert construction |
| CN104533456A (en) * | 2014-12-15 | 2015-04-22 | 中铁上海工程局集团有限公司 | Super-large section chamber reinforced concrete modelling construction method |
| CN104632251A (en) * | 2014-12-31 | 2015-05-20 | 上海市机械施工集团有限公司 | Integrally cast type mould plate trolley and construction method of concrete pouring of underground passage |
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| CN209162667U (en) * | 2018-09-18 | 2019-07-26 | 甘肃恒捷路桥养护科技有限公司 | All-hydraulic automatically walk culvert abutment body trolley |
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110315465A (en) * | 2019-08-06 | 2019-10-11 | 安徽水利开发有限公司 | Culvert merogenesis steel lining auxiliary installation device |
| CN110468748A (en) * | 2019-08-08 | 2019-11-19 | 福建祝融工程机械有限公司 | A kind of culvert trolley |
| CN110468748B (en) * | 2019-08-08 | 2024-05-14 | 福建祝融工程机械有限公司 | Culvert trolley |
| CN111809536A (en) * | 2020-08-07 | 2020-10-23 | 中铁五局集团建筑工程有限责任公司 | Integrally-moving box culvert template and construction method thereof |
| CN112779929A (en) * | 2021-02-08 | 2021-05-11 | 北京场道市政工程集团有限公司 | Pouring and installing method of comprehensive pipe gallery |
| CN113047189A (en) * | 2021-03-24 | 2021-06-29 | 中国五冶集团有限公司 | Movable formwork for culvert construction |
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