CN112878667A - Sliding frame structure and construction method for outer wall concrete pouring by using same - Google Patents
Sliding frame structure and construction method for outer wall concrete pouring by using same Download PDFInfo
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- CN112878667A CN112878667A CN202110083480.2A CN202110083480A CN112878667A CN 112878667 A CN112878667 A CN 112878667A CN 202110083480 A CN202110083480 A CN 202110083480A CN 112878667 A CN112878667 A CN 112878667A
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- hanger
- counterweight
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- main beam
- template
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- 238000010276 construction Methods 0.000 title claims abstract description 41
- 238000005096 rolling process Methods 0.000 claims abstract description 8
- 239000003638 chemical reducing agent Substances 0.000 claims abstract description 5
- 229910000831 Steel Inorganic materials 0.000 claims description 16
- 239000010959 steel Substances 0.000 claims description 16
- 238000003466 welding Methods 0.000 claims description 9
- 239000000463 material Substances 0.000 claims description 6
- 229910001294 Reinforcing steel Inorganic materials 0.000 claims description 3
- 230000003014 reinforcing effect Effects 0.000 claims description 3
- 238000000034 method Methods 0.000 description 6
- 238000009415 formwork Methods 0.000 description 2
- 239000000725 suspension Substances 0.000 description 2
- XAGFODPZIPBFFR-UHFFFAOYSA-N aluminium Chemical compound [Al] XAGFODPZIPBFFR-UHFFFAOYSA-N 0.000 description 1
- 229910052782 aluminium Inorganic materials 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 238000005266 casting Methods 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 238000009432 framing Methods 0.000 description 1
- 238000006467 substitution reaction Methods 0.000 description 1
- 239000002023 wood Substances 0.000 description 1
Images
Classifications
-
- E—FIXED CONSTRUCTIONS
- E04—BUILDING
- E04G—SCAFFOLDING; FORMS; SHUTTERING; BUILDING IMPLEMENTS OR AIDS, OR THEIR USE; HANDLING BUILDING MATERIALS ON THE SITE; REPAIRING, BREAKING-UP OR OTHER WORK ON EXISTING BUILDINGS
- E04G11/00—Forms, shutterings, or falsework for making walls, floors, ceilings, or roofs
- E04G11/06—Forms, shutterings, or falsework for making walls, floors, ceilings, or roofs for walls, e.g. curved end panels for wall shutterings; filler elements for wall shutterings; shutterings for vertical ducts
- E04G11/20—Movable forms; Movable forms for moulding cylindrical, conical or hyperbolical structures; Templates serving as forms for positioning blocks or the like
- E04G11/34—Horizontally-travelling moulds for making walls blockwise or section-wise
-
- E—FIXED CONSTRUCTIONS
- E04—BUILDING
- E04G—SCAFFOLDING; FORMS; SHUTTERING; BUILDING IMPLEMENTS OR AIDS, OR THEIR USE; HANDLING BUILDING MATERIALS ON THE SITE; REPAIRING, BREAKING-UP OR OTHER WORK ON EXISTING BUILDINGS
- E04G17/00—Connecting or other auxiliary members for forms, falsework structures, or shutterings
-
- E—FIXED CONSTRUCTIONS
- E04—BUILDING
- E04G—SCAFFOLDING; FORMS; SHUTTERING; BUILDING IMPLEMENTS OR AIDS, OR THEIR USE; HANDLING BUILDING MATERIALS ON THE SITE; REPAIRING, BREAKING-UP OR OTHER WORK ON EXISTING BUILDINGS
- E04G17/00—Connecting or other auxiliary members for forms, falsework structures, or shutterings
- E04G17/002—Workplatforms, railings; Arrangements for pouring concrete, attached to the form
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- Engineering & Computer Science (AREA)
- Architecture (AREA)
- Mechanical Engineering (AREA)
- Civil Engineering (AREA)
- Structural Engineering (AREA)
- Conveying And Assembling Of Building Elements In Situ (AREA)
Abstract
The invention discloses a carriage structure and a construction method for performing outer wall concrete pouring by using the same, wherein the carriage structure comprises a portal structure, a hanger structure, a traveling system, a mould adjusting system, a counterweight structure and a template system, and the portal structure comprises a main beam, a secondary beam, an upright post and a transverse connecting system; the hanger structure comprises a hanger, a guide wheel and a floor plate; the walking system comprises a bottom beam, wheels and a motor reducer; the mold adjusting system comprises a chain block and a rolling shaft; the top of the upright post is fixedly connected with the lower end face of the secondary beam, and the bottom of the upright post is fixedly connected with the bottom beam; the stand includes left stand and right stand, and left stand setting is in the one side that is close to girder left end portion, and right stand setting is in the position that is close to the girder mid point, is provided with the transverse connection system between left stand and the right stand. Adopt the balladeur train to drive the template walking to provide construction operation platform through suspending in midair the frame, replace the scaffold frame and set up, practice thrift construction cost, utilize the balladeur train to do outside construction gallows simultaneously, processing is simple, convenient operation.
Description
Technical Field
The invention relates to the field of carriage construction, in particular to a carriage structure and a construction method for outer wall concrete pouring by using the same.
Background
The cast-in-place construction of the pipe gallery mostly adopts a construction method of full framing and wood formworks, and adopts a method of assembling, disassembling and transporting parts, so that the problems of low construction efficiency, large manual investment and the like exist.
For the construction of the outer wall of a multilayer pipe gallery, a scaffold needs to be erected along the whole length of a pipeline of the pipe gallery, and the input material and labor cost are high; and the scaffold is high in erection height, so that certain safety risk exists.
Wherein, pipe gallery integral casting platform truck, the construction technology that the platform truck adopted pipe gallery side wall, roof to pour simultaneously, through the ann of flexible realization template of hydraulic cylinder tear open, drive the cunning through the motor and move to next segment. The construction method has the following disadvantages: the side wall and the top plate are simultaneously poured, the construction period is long, and the concrete strength of the top plate needs to be waited for to increase to the design requirement; the template is a steel mould, a hydraulic system and a walking motor need to be combined, and the template is heavy in weight and high in cost; the outer wall formwork can not be provided for walking, and a scaffold needs to be erected on the outer wall.
The slip form system adopts the separate pouring of the side wall and the top plate of the pipe gallery, is a construction process for pouring the side wall, suspends the side form through the chain block, and is driven by the motor to travel to the next section. The construction method has the following defects: the template is an aluminum die and is suspended on the sliding frame through a chain block; and a scaffold is required to be erected on the outer wall.
Disclosure of Invention
The invention aims to provide a sliding frame structure and a construction method for outer wall concrete pouring by using the sliding frame structure, and aims to solve the problems of complex scaffold erection, low construction efficiency, high manual investment, high safety risk, high material investment and the like.
In order to achieve the purpose, the invention adopts the following technical scheme: the invention provides a carriage structure, which comprises a portal structure, a hanger structure, a traveling system, a mould adjusting system, a counterweight structure and a template system, wherein the portal structure comprises a main beam, a secondary beam, an upright post and a transverse connecting system;
the hanger structure comprises a hanger, a guide wheel and a floor plate;
the walking system comprises a bottom beam, wheels and a motor reducer;
the mold adjusting system comprises a chain block and a rolling shaft;
the top of the upright post is fixedly connected with the lower end face of the secondary beam, and the bottom of the upright post is fixedly connected with the bottom beam; the upright columns comprise a left upright column and a right upright column, the left upright column is arranged on one side close to the left end part of the main beam, the right upright column is arranged at a position close to the middle point of the main beam, and a transverse connection system is arranged between the left upright column and the right upright column;
the hanging bracket is arranged on one side close to the right end part of the main beam, the top of the hanging bracket is fixedly connected with the main beam, the bottom of the hanging bracket is arranged on the ground, and one side of the hanging bracket is provided with a guide wheel;
the counterweight structure comprises a counterweight frame and a counterweight block, the counterweight frame comprises an inclined strut and a supporting plate, the lower part of the inclined strut is arranged on the bottom beam, the upper part of the inclined strut is arranged in the middle of the lower bottom surface of the supporting plate, and the counterweight block is arranged on the supporting plate.
Furthermore, the main beams are at least three and are arranged in parallel at intervals, and secondary beams are arranged between every two adjacent main beams.
Furthermore, the main beam adopts a No. 8 channel steel lattice structure, and the web members adopt angle steels with the model number of L50X 5; the secondary beam adopts an angle steel lattice structure with the model number of L50X 5; the upright post adopts a lattice structure with the model of a rectangular tube of 80X60X 5; the connection is made by assembling and welding L50X5 angle steel.
Further, the hanging bracket is assembled and welded by a rectangular tube 50X50X4, and the guide wheel is a 3-inch wheel; the floor board is made of steel gangplank.
Furthermore, the bottom beam is formed by assembling and welding double 20b channel steel, and the wheels are 5-inch wheels.
Further, the chain block adopts a 5t chain block.
Furthermore, the counterweight frame adopts No. 8 channel steel assembly welding.
Further, the top surface of the supporting plate is flush with the bottom surface of the transverse connecting system.
Further, the bottom beam is 235mm high.
Further, the mould adjusting system is arranged on the lower end face of the main beam between the right upright post and the hanging bracket.
Further, the stand is 5475mm high.
Further, the height of the main beam is equal to that of the secondary beam; the main beam is 510mm high.
Further, the length of girder is 6000mm at least.
Further, the distance between the left upright post and the right upright post is 2000 mm.
Further, the distance between the left upright post and the edge of the main beam is 600 mm.
Further, the distance between gallows and the right pillar is 2500 mm.
Further, the width of the hanger is 700 mm.
Further, the distance from the hanger to the right side edge of the main beam is 200 mm.
Further, at least two transverse connections are provided; the distance between the two attachment systems is less than 1/2 the height of the posts.
The invention also provides a construction method for performing outer wall concrete pouring by using the sliding frame structure, which comprises the following specific steps: the construction process comprises the following steps:
preparing materials according to a design drawing, and welding and assembling a sliding frame structure;
step two, after the binding of the reinforcing steel bars of the side wall of the pipe gallery is finished, the outer wall sliding frame structure is moved to the segment section by section according to the standard segment of 6m by a moving motor;
step three, lowering and horizontally moving the external wall template to an accurate position through a chain block and a rolling shaft, and positioning and closing the die;
fourthly, mounting a pull rod and a transverse stay bar reinforcing template by utilizing a platform provided by the hanging bracket;
pouring side wall concrete, and vibrating by a constructor standing on a construction platform;
step six, when the concrete meets the standard requirements, the transverse stay bar and the pull rod are dismantled;
step seven, according to the standard section of 6m, the side mold is disassembled section by section and suspended by a chain block;
step eight, integrally moving the sliding frame structure and the template to the next stage according to 6m sections by a walking motor;
and step nine, repeating the steps and performing circular construction.
The invention has the beneficial effects that:
according to the sliding frame structure and the construction method for outer wall concrete pouring by using the sliding frame structure, the sliding frame is adopted to drive the template to travel, the suspension frame is used for providing a construction operation platform, a scaffold is replaced to be erected, the construction cost is saved, the sliding frame is used as an outer side construction suspension frame, and the sliding frame structure is simple to process and convenient to operate.
2, the sliding frame structure and the construction method for pouring the concrete of the outer wall by using the structure have good popularization, the urban underground pipe gallery is prosperous, and the construction of the multilayer cast-in-place pipe gallery has a wide market.
Additional features and advantages of the invention will be set forth in the description which follows, and in part will be obvious from the description, or may be learned by the practice of the invention. The primary objects and other advantages of the invention may be realized and attained by the instrumentalities particularly pointed out in the specification.
Drawings
The present invention will be described in further detail with reference to the accompanying drawings.
FIG. 1 is an exterior wall slide design;
FIG. 2 is a left side view of the outer wall carriage;
FIG. 3 is a cross-sectional view of the hanger;
FIG. 4 is a concrete pouring state diagram of an outer wall;
FIG. 5 is a cross-sectional left side view of the carriage;
FIG. 6 is a view showing a state of the carriage traveling on the outer wall;
fig. 7 is a carriage cross-sectional view;
FIG. 8 is a cross-sectional view of the bottom rail and hanger;
fig. 9 is a sectional view of the connection of the main beam and the secondary beam.
Reference numerals: 1-hanging bracket, 2-guide wheel, 3-paving plate, 4-bottom beam, 5-wheel, 6-motor reducer, 7-chain block, 8-rolling shaft, 9-main beam, 10-secondary beam, 11-left upright post, 12-right upright post, 13-transverse connecting system, 14-diagonal brace and 15-support plate.
Detailed Description
The technical solutions of the present invention are described in detail below by examples, and the following examples are only exemplary and can be used only for explaining and illustrating the technical solutions of the present invention, but not construed as limiting the technical solutions of the present invention.
Examples
As shown in fig. 1-3, the invention adopts a multilayer pipe gallery construction carriage to be used as an outer side construction hanger 1 to replace the erection of a scaffold; the structure is as follows: the multi-layer pipe gallery outer wall sliding frame consists of a portal frame structure, a hanging frame structure, a walking system, a mold adjusting system, a counterweight structure and a template system; every 6m is a standard section.
The invention provides a carriage structure, which comprises a portal structure, a hanger structure, a traveling system, a mould adjusting system, a counterweight structure and a template system, wherein the portal structure comprises a main beam 9, a secondary beam 10, an upright post and a transverse connecting system 13;
the hanger structure comprises a hanger 1, a guide wheel 2 and a floor 3;
the walking system comprises a bottom beam 4, wheels 5 and a motor reducer 6;
the mould adjusting system comprises a chain block 7 and a rolling shaft 8;
as shown in fig. 9, there are at least three main beams 9 arranged in parallel at intervals, and a secondary beam 10 is arranged between adjacent main beams 9. The number of secondary beams 10 is flexibly arranged according to the stress situation. The top of the upright post is fixedly connected with the lower end face of the secondary beam 10, and the bottom of the upright post is fixedly connected with the bottom beam 4; the height of the upright post is 5475 mm. The upright columns comprise a left upright column 11 and a right upright column 12, the left upright column 11 is arranged on one side close to the left end part of the main beam 9, the right upright column 12 is arranged at a position close to the midpoint of the main beam 9, and a transverse connecting system 13 is arranged between the left upright column 11 and the right upright column 12;
referring to fig. 8, a hanger 1 is arranged at one side close to the right end of a main beam 9, the top of the hanger 1 is fixedly connected with the main beam 9, the bottom of the hanger 1 is arranged on the ground, and a guide wheel 2 is arranged at one side of the hanger 1; the hanging bracket 1 is paved with a floor 3 which is convenient for workers to walk.
The counterweight structure includes counterweight frame and balancing weight, and the counterweight frame includes bracing 14 and backup pad 15, and 14 lower parts of bracing set up on floorbar 4, and 14 upper portions of bracing set up bottom surface middle part under backup pad 15, and the balancing weight setting is in backup pad 15.
The main beam 9 adopts a No. 8 channel steel lattice structure, and the web members adopt angle steels with the model number of L50X 5; the secondary beam 10 adopts an angle steel lattice structure with the model number of L50X 5; the upright post adopts a lattice structure with the model of a rectangular tube of 80X60X 5; the connection is made by assembling and welding L50X5 angle steel. The hanger 1 adopts a rectangular tube 50X50X4 assembly welding, and the guide wheel 2 adopts a 3-inch wheel; the floor board 3 adopts a steel springboard.
The bottom beam 4 adopts double 20b channel steel assembly welding, and the height of the bottom beam 4 is 235 mm. The wheel 5 is a 5-inch wheel. The chain block 7 adopts a 5t chain block 7. The counterweight frame is assembled and welded by No. 8 channel steel. The top surface of the supporting plate 15 is flush with the bottom surface of the transverse connecting system 13.
The mould adjusting system is arranged on the lower end face of the main beam 9 between the right upright post 12 and the hanging bracket 1. The distance between the left upright 11 and the right upright 12 is 2000 mm. The distance between the left upright post 11 and the edge position of the main beam 9 is 600 mm. The distance between the hanger 1 and the right upright post 12 is 2500 mm. The width of the hanger 1 is 700 mm.
The height of the main beam 9 is equal to that of the secondary beam 10; the main beam 9 is 510mm high. The length of the main beam 9 is at least 6000 mm. The distance between the hanger 1 and the right side edge of the main beam 9 is 200 mm.
At least two transverse connecting systems 13 are arranged; the distance between the two attachment systems is less than 1/2 the height of the posts.
As shown in fig. 4-7, the invention also provides a construction method for exterior wall concrete pouring by using the carriage structure, which comprises the following specific steps: the construction process comprises the following steps:
preparing materials according to a design drawing, and welding and assembling a sliding frame structure;
step two, after the binding of the reinforcing steel bars of the side wall of the pipe gallery is finished, the outer wall sliding frame structure is moved to the segment section by section according to the standard segment of 6m by a moving motor;
thirdly, the outer wall template is lowered and horizontally moved to an accurate position through a chain block 7 and a rolling shaft 8, and the mold is positioned and closed;
fourthly, mounting a pull rod and a transverse stay bar reinforcing template by utilizing the platform provided by the hanger 1;
pouring side wall concrete, and vibrating by a constructor standing on a construction platform;
step six, when the concrete meets the standard requirements, the transverse stay bar and the pull rod are dismantled;
seventhly, according to the standard section of 6m, the side mold is disassembled section by section and suspended through a chain block 7;
step eight, integrally moving the sliding frame structure and the template to the next stage according to 6m sections by a walking motor;
and step nine, repeating the steps and performing circular construction.
In the construction method provided by the invention, the sliding frame is also used as the outer construction hanging bracket 1 to replace the erected scaffold. The scaffold can completely replace a scaffold which is erected, labor and materials are saved, the advantages are obvious, and the scaffold is easy to accept by constructors. The sliding frame is used for balancing weight when running and is reliably anchored with the bottom plate of the pipe gallery when not running. Compared with a scheme of erecting a scaffold, the method saves 60.7 ten thousand yuan compared with the scheme of erecting the scaffold by calculating according to the length of the pipe gallery of 3km and 100 construction sections.
The above description is only for the preferred embodiment of the present invention, but the scope of the present invention is not limited thereto, and any changes or substitutions that may be made by those skilled in the art within the technical scope of the present invention will be covered by the scope of the present invention.
Claims (10)
1. The carriage structure is characterized in that: the sliding frame structure comprises a portal frame structure, a hanging bracket structure, a walking system, a mould adjusting system, a counterweight structure and a template system, wherein the portal frame structure comprises a main beam (9), a secondary beam (10), an upright post and a transverse connecting system (13);
the hanger structure comprises a hanger (1), a guide wheel (2) and a floor (3);
the walking system comprises a bottom beam (4), wheels (5) and a motor reducer (6);
the mould adjusting system comprises a chain block (7) and a rolling shaft (8);
the top of the upright post is fixedly connected with the lower end surface of the secondary beam (10), and the bottom of the upright post is fixedly connected with the bottom beam (4); the upright columns comprise a left upright column (11) and a right upright column (12), the left upright column (11) is arranged on one side close to the left end part of the main beam (9), the right upright column (12) is arranged at a position close to the middle point of the main beam (9), and a transverse connecting system (13) is arranged between the left upright column (11) and the right upright column (12);
the hanging bracket (1) is arranged on one side close to the right end part of the main beam (9), the top of the hanging bracket (1) is fixedly connected with the main beam (9), the bottom of the hanging bracket (1) is arranged on the ground, and one side of the hanging bracket (1) is provided with a guide wheel (2);
the counterweight structure comprises a counterweight frame and a counterweight block, the counterweight frame comprises an inclined strut (14) and a supporting plate (15), the lower part of the inclined strut (14) is arranged on the bottom beam (4), the upper part of the inclined strut (14) is arranged in the middle of the lower bottom surface of the supporting plate (15), and the counterweight block is arranged on the supporting plate (15).
2. The carriage structure of claim 1, characterized in that said main beams (9) are at least three and are arranged parallel and spaced apart, and that secondary beams (10) are arranged between adjacent main beams (9).
3. The carriage structure of claim 1, characterized in that the hanger (1) is assembled and welded by a rectangular tube 50X4, and the guide wheel (2) is a 3-inch wheel; the floor board (3) adopts a steel springboard.
4. A carriage structure as claimed in claim 1, characterized in that the bottom beam (4) is assembled and welded with double 20b channel and the wheels (5) are 5 "wheels.
5. The carriage structure of claim 1, characterized in that the chain block (7) is a 5t chain block (7).
6. The carriage structure of claim 1 wherein the weight carrier is assembled and welded using channel 8.
7. A carriage structure as claimed in claim 1, characterized in that the top surface of the support plate (15) is flush with the bottom surface of the transverse connection system (13).
8. A carriage structure as claimed in claim 1, characterized in that the base beam (4) is 235mm high.
9. The carriage structure of claim 1, characterized in that the mould-adjusting system is arranged at the lower end face of the main beam (9) between the right upright (12) and the spreader (1).
10. Construction method for concreting an exterior wall by means of a carriage structure according to any of claims 1-9, characterised in that the concrete steps are as follows:
preparing materials according to a design drawing, and welding and assembling a sliding frame structure;
step two, after the binding of the reinforcing steel bars of the side wall of the pipe gallery is finished, the outer wall sliding frame structure is moved to the segment section by section according to the standard segment of 6m by a moving motor;
thirdly, the outer wall template is lowered and horizontally moved to an accurate position through a chain block (7) and a rolling shaft (8), and the mold is positioned and closed;
fourthly, installing a pull rod and a transverse stay bar reinforcing template by utilizing the platform provided by the hanger (1);
pouring side wall concrete, and vibrating by a constructor standing on a construction platform;
step six, when the concrete meets the standard requirements, the transverse stay bar and the pull rod are dismantled;
seventhly, according to the standard section of 6m, the side die is disassembled section by section and suspended through a chain block (7);
step eight, integrally moving the sliding frame structure and the template to the next stage according to 6m sections by a walking motor;
and step nine, repeating the steps and performing circular construction.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202110083480.2A CN112878667A (en) | 2021-01-21 | 2021-01-21 | Sliding frame structure and construction method for outer wall concrete pouring by using same |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202110083480.2A CN112878667A (en) | 2021-01-21 | 2021-01-21 | Sliding frame structure and construction method for outer wall concrete pouring by using same |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN112878667A true CN112878667A (en) | 2021-06-01 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202110083480.2A Pending CN112878667A (en) | 2021-01-21 | 2021-01-21 | Sliding frame structure and construction method for outer wall concrete pouring by using same |
Country Status (1)
| Country | Link |
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| CN (1) | CN112878667A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114351625A (en) * | 2022-01-19 | 2022-04-15 | 杭州萧山交通建设管理有限公司 | Reinforced concrete flower box guardrail and construction method |
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| JP2001164858A (en) * | 1999-12-06 | 2001-06-19 | Asahi Electric Works Ltd | Mobile ladder |
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| KR20130121281A (en) * | 2012-04-27 | 2013-11-06 | 장영미 | Apparatus for a in-line mold of precast concrete culverts and method for producing precast concrete culverts |
| CN103806645A (en) * | 2014-02-18 | 2014-05-21 | 广东信海建筑有限公司 | Light intelligent hydraulic formwork climbing device with good wind and fire resistant performance |
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| CN110438904A (en) * | 2019-08-15 | 2019-11-12 | 中国五冶集团有限公司 | A kind of device and method for installing anticollision wall form |
| CN212247876U (en) * | 2020-01-14 | 2020-12-29 | 中建铁路投资建设集团有限公司 | Novel portable bridge anticollision wall construction handling support |
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2021
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4540150A (en) * | 1982-09-11 | 1985-09-10 | Entreprise Generale Industrielle | Self elevating formwork installation with variable geometry for making concrete surfaces, particularly very high concrete surfaces |
| JPH08260494A (en) * | 1995-03-24 | 1996-10-08 | Hitachi Zosen Corp | Mobile formwork equipment for submerged box production |
| JP2001164858A (en) * | 1999-12-06 | 2001-06-19 | Asahi Electric Works Ltd | Mobile ladder |
| KR20130121281A (en) * | 2012-04-27 | 2013-11-06 | 장영미 | Apparatus for a in-line mold of precast concrete culverts and method for producing precast concrete culverts |
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114351625A (en) * | 2022-01-19 | 2022-04-15 | 杭州萧山交通建设管理有限公司 | Reinforced concrete flower box guardrail and construction method |
| CN114351625B (en) * | 2022-01-19 | 2023-03-28 | 杭州萧山交通建设管理有限公司 | Reinforced concrete flower box guardrail and construction method |
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