CN112696013A - Integral self-disassembling type beam bottom supporting device - Google Patents
Integral self-disassembling type beam bottom supporting device Download PDFInfo
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- CN112696013A CN112696013A CN202011507651.1A CN202011507651A CN112696013A CN 112696013 A CN112696013 A CN 112696013A CN 202011507651 A CN202011507651 A CN 202011507651A CN 112696013 A CN112696013 A CN 112696013A
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- supporting
- supporting device
- disassembling
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- truss
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- 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
- E04G13/00—Falsework, forms, or shutterings for particular parts of buildings, e.g. stairs, steps, cornices, balconies foundations, sills
- E04G13/04—Falsework, forms, or shutterings for particular parts of buildings, e.g. stairs, steps, cornices, balconies foundations, sills for lintels, beams, or transoms to be encased separately; Special tying or clamping means therefor
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- 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
- E04G25/00—Shores or struts; Chocks
-
- 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
- E04G25/00—Shores or struts; Chocks
- E04G25/04—Shores or struts; Chocks telescopic
-
- 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
- E04G25/00—Shores or struts; Chocks
- E04G2025/006—Heads therefor, e.g. pivotable
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- Engineering & Computer Science (AREA)
- Architecture (AREA)
- Mechanical Engineering (AREA)
- Civil Engineering (AREA)
- Structural Engineering (AREA)
- Forms Removed On Construction Sites Or Auxiliary Members Thereof (AREA)
Abstract
The invention relates to an integral self-disassembling type beam bottom supporting device, and belongs to the technical field of building construction. The template truss support device comprises a template truss support device, a support adjusting device, a dismounting device and a master control box; the template truss supporting device is mainly formed by integrating a supporting truss, a beam bottom template and an operating platform; the operation platform comprises a platform plate, a railing, a hydraulic rod and a hydraulic device, and the platform plate and the railing can be controlled to be lifted and retracted by the hydraulic device through the hydraulic rod during installation and disassembly; the supporting and adjusting device mainly comprises a supporting device and an adjusting jack, and the top of the adjusting jack supports the template truss supporting device; the dismounting device consists of a slide rail, a roller, a rack, a gear, a driving device and a distance sensor, and can drive the gear to enable the template truss supporting device to slide out along the slide rail, so that automatic operation is realized; the invention can realize the integral installation of the bottom die template of the large-span beam body, has high adjustment precision and high speed in the horizontal and vertical directions, and can realize the integral dismantling with safer dismantling operation.
Description
Technical Field
The invention relates to a supporting device, in particular to an integral self-disassembling type beam bottom supporting device, and belongs to the technical field of building construction.
Background
There are more high-rise, stride concrete structure construction operations among the cement project building structure, and the construction equipment that exists at present and operation mode all have more inadaptation with this kind of structure type, are unfavorable for promoting the efficiency of construction and guarantee construction operation safety.
The structure of the cement preheater is one of core process workshops of cement projects, is limited by technical characteristics of cement production processes, and has the characteristics of large floor height (12-15 m) and large beam span (9-15 m); such structural forms are more in cement projects or similar industrial projects, but the current construction is mainly completed by erecting scaffolds (special schemes need to be made and expert demonstration needs to be carried out for such load-bearing frame bodies), and the following adverse factors exist: firstly, a large amount of scaffold investment is needed; secondly, the labor cost is high; disassembly, assembly and turnover are inconvenient, and construction efficiency is low; fourthly, unsafe factors of high-altitude operation are more, and risks are high; long construction period, etc.
Disclosure of Invention
Aiming at the defects in the prior art, the invention provides an integral self-disassembling type beam bottom supporting device which is used for solving the problems of large investment, low construction efficiency and long period of a scaffold in the construction of the existing cement preheater structure.
In order to solve the technical problems, the technical scheme adopted by the invention is as follows:
the integral self-disassembling type beam bottom supporting device comprises a template truss supporting device, a supporting adjusting device, a disassembling device and a master control box, wherein the supporting adjusting device is arranged at two ends of the template truss supporting device and used for supporting the template truss supporting device; the template truss supporting device is mainly formed by integrating a supporting truss, a beam bottom template and an operating platform, and is convenient to assemble, assemble and disassemble; the operation platform comprises a platform plate, a railing, a hydraulic rod and a hydraulic device, and the platform plate and the railing can be controlled to be lifted and retracted by the hydraulic device through the hydraulic rod during installation and disassembly;
the supporting and adjusting device mainly comprises a supporting device and an adjusting jack, the supporting device is fixed on a wall through an anchor bolt, the bottom of the adjusting jack is fixed on the supporting device, and the top of the adjusting jack supports the template truss supporting device; the supporting device can adjust the installation height, and the supporting height can be adjusted and removed through the adjusting jack;
the dismounting device consists of a sliding rail, a roller, a rack, a gear, a driving device and a distance sensor, wherein the roller, the gear, the driving device and the distance sensor are respectively arranged at two ends of a supporting device of the template frame, the driving device is in driving connection with the gear and the roller, and the sliding rail and the rack are fixed on the supporting device; during dismantling, the jack is adjusted to contract, the roller and the gear fall and are respectively contacted with the sliding rail and the rack, and then the driving device can drive the gear to enable the template truss supporting device to slide out along the sliding rail, so that automatic operation is realized;
the master control box comprises an electric drive synchronous system, a hydraulic control synchronous system and a position monitoring and correlation system, and the electric drive synchronous system and the hydraulic control synchronous system can control a drive device, a hydraulic device or an adjusting jack to synchronously move; the position monitoring and correlation system can simultaneously receive signals transmitted by the distance sensors, so that emergency braking is realized, and accidents are prevented.
Furthermore, the support truss is composed of an upper chord, a lower chord, a vertical rod, an inclined rod, an upper cross rod and a lower cross rod, wherein the vertical rod and the inclined rod are connected between the upper chord and the lower chord; an upper cross rod and a lower cross rod are respectively arranged between the two upper chords and between the two lower chords; the inclined rods are connected and arranged between the adjacent vertical rods.
Furthermore, one end of the hydraulic rod is hinged to the middle lower portion of the vertical rod, the other end of the hydraulic rod is hinged to the middle of the platform plate, and the inner end of the platform plate is hinged to the upper chord.
Further, railing bottom with the landing slab outer end is articulated, the lower part still articulates in the railing and is provided with a connecting rod, the connecting rod other end with the hydraulic stem tip is articulated in landing slab position department for zoom control the railing.
Further, the rack is arranged on the inner side of the sliding rail, the rack corresponds to the gear up and down, and the sliding rail corresponds to the roller up and down.
Furthermore, the distance sensors are symmetrically arranged on two sides of the roller and vertically correspond to the slide rail; (ii) a The rollers are symmetrically arranged on two sides of the gear.
Further, the sliding rail and the rack extend towards one side of the support adjusting device.
Furthermore, a reinforcing column is further arranged on one side of the supporting device, and a first inclined support and a second inclined support are further respectively arranged between the reinforcing column and the sliding rail.
Furthermore, two ends of the first inclined strut are fixedly connected with the middle of the reinforcing column and the middle of the sliding rail respectively; and two ends of the second inclined support are respectively fixedly connected with the bottom of the reinforcing column and the outer end part of the sliding rail and used for enhancing the supporting force.
Further, the first inclined strut and the second inclined strut are arranged in parallel.
Compared with the prior art, the invention has the following technical effects:
the integral self-disassembling type beam bottom supporting device has the advantages of being capable of realizing integral installation of a bottom die template of a large-span beam body, high in adjustment accuracy in the horizontal direction and the vertical direction, high in speed, capable of realizing integral disassembly, safer in disassembly operation and the like. The construction method can be combined with various construction processes such as creeping formwork, climbing frame and traditional scaffold erection in the aspect of application, and construction operation of high-rise and large-span structures is completed. The technical effects obtained are as follows:
firstly, the integral installation of a bottom die template of a large-span beam body can be realized;
secondly, the adjustment precision in the horizontal direction and the vertical direction is high, and the speed is high;
the integral dismantling can be realized, and the dismantling operation is safer;
the overall turnover utilization rate of the equipment is improved, and the overall material consumption is reduced;
the method can be matched with the current advanced vertical member construction technology for use, such as creeping formwork, cantilever formwork, sizing formwork and the like.
Drawings
FIG. 1 is a schematic view of an integral self-disassembling beam bottom supporting device according to the present invention;
FIG. 2 is a sectional view taken along line A-A of FIG. 1;
FIG. 3 is a sectional view taken along line B-B of FIG. 1;
FIG. 4 is a schematic view of the removal of the integral self-disassembling beam bottom supporting device of the present invention;
FIG. 5 is a schematic view of a walking driving part of the dismounting device of the integral self-dismounting type beam bottom supporting device of the present invention.
Detailed Description
The present invention will be described in detail with reference to the accompanying fig. 1 to 5.
As shown in fig. 1 to 5, the integral self-disassembling beam bottom supporting device of this embodiment includes a template truss supporting device, a support adjusting device, a disassembling device, and a master control box 14, where the support adjusting device is disposed at two ends of the template truss supporting device and is used for supporting the template truss supporting device, and the master control box is electrically and hydraulically connected with the template truss supporting device, the support adjusting device, and the disassembling device to perform an overall control function. As shown in fig. 1-2, the formwork truss support device is mainly formed by integrating a support truss 1, a beam bottom formwork 2 and an operating platform 3, and is convenient for assembly, disassembly and assembly.
As shown in fig. 2-3, the operation platform 3 comprises a platform plate 31, a rail 32, a hydraulic rod 11 and a hydraulic device 10, and the platform plate and the rail can be lifted and retracted by the hydraulic device 10 through the hydraulic rod 11 during installation and removal. The supporting truss 1 is composed of an upper chord 101, a lower chord 102, a vertical rod 103, an inclined rod 104, an upper chord 107 and a lower cross rod 108, wherein the vertical rod 103 and the inclined rod 104 are connected between the upper chord 101 and the lower chord 102. An upper cross bar 107 and a lower cross bar 108 are respectively arranged between the two upper chords 101 and between the two lower chords 102. An inclined rod 104 is connected between the adjacent vertical rods 103. One end of the hydraulic rod 11 is hinged to the middle lower part of the vertical rod 103, one end of the hydraulic rod is hinged to the middle part of the platform plate 31, and the inner end of the platform plate 31 is hinged to the upper chord 101. The bottom of the railing 32 is hinged to the outer end of the platform plate 31, a connecting rod 321 is further hinged to the middle lower portion of the railing 32, and the other end of the connecting rod 321 is hinged to the end portion of the hydraulic rod 11 at the position of the platform plate 31 and used for controlling the railing 32 to retract and retract.
As shown in fig. 1,2 and 4, the supporting and adjusting device mainly comprises a supporting device 5 and an adjusting jack 4, wherein the supporting device 5 is fixed on the wall through an anchor bolt, the bottom of the adjusting jack 4 is fixed on the supporting device 5, and the top of the adjusting jack 4 supports the formwork truss supporting device. The supporting device 5 can adjust the installation height, and the supporting height can be adjusted and removed by adjusting the jack 4.
As shown in fig. 4-5, the detaching device is composed of a slide rail 6, a roller 7, a rack 8, a gear 9, a driving device 13 and a distance sensor 12, wherein the roller 7, the gear 9, the driving device 13 and the distance sensor 12 are respectively installed at two ends of a supporting device of a formwork , the driving device 13 is in driving connection with the gear 9 and the roller 7, and the slide rail 6 and the rack 8 are fixed on the supporting device 5. When the formwork truss support device is dismounted, the adjusting jack 4 is contracted, the roller 7 and the gear 9 fall down and are respectively contacted with the sliding rail 6 and the rack 8, and then the driving device 13 can drive the gear 9 to enable the formwork truss support device to slide out along the sliding rail 6, so that automatic operation is realized. In this embodiment, the slide rail 6 and the rack 8 extend toward the side of the support adjustment device. Wherein, rack 8 sets up in slide rail 6 inboard, and rack 8 corresponds from top to bottom with gear 9, and slide rail 6 corresponds from top to bottom with gyro wheel 7. The distance sensors 12 are symmetrically arranged on two sides of the roller 7 and correspond to the slide rail 6 up and down. The rollers 7 are symmetrically arranged on two sides of the gear 9. A reinforcing column 501 is further disposed on one side of the supporting device 5, and a first inclined strut 502 and a second inclined strut 503 are further disposed between the reinforcing column 501 and the slide rail 6. Two ends of the first inclined strut 502 are respectively fixedly connected with the middle of the reinforcing column 501 and the middle of the slide rail 6. Two ends of the second inclined strut 503 are respectively fixedly connected with the bottom of the reinforcing column 501 and the outer end of the slide rail 6, so as to enhance the supporting force. In this embodiment, the first inclined strut 502 and the second inclined strut 503 are disposed in parallel.
The master control box 14 comprises an electric drive synchronous system, a hydraulic control synchronous system and a position monitoring and correlation system, and the electric drive synchronous system and the hydraulic control synchronous system can control the driving device 13, the hydraulic device 10 or the adjusting jack 4 to move synchronously. The position monitoring and correlation system can simultaneously receive signals transmitted by the distance sensor 12, so that emergency braking is realized and accidents are prevented.
The installation operation steps are as follows:
the method comprises the following steps: and installing a support adjusting device, and integrally hoisting the template truss supporting device and the adjusting jack 4 to the upper part of the supporting device 5 for installation after the installation of the support adjusting device.
Step two: the mounting height of the beam bottom template 2 is adjusted by adjusting the adjusting jack 4.
Step three: the operation platforms 3 on the two sides of the truss are opened through the hydraulic rods 11 supporting the truss 1.
Step four: and (5) performing beam reinforcement binding, side formwork installation and concrete pouring operation.
Step five: and mounting a beam bottom slide rail 6.
The dismantling and transferring operation steps are as follows:
the method comprises the following steps: curing the concrete to reach the age;
step two: adjusting the adjusting jack 4, and placing the support truss 1 on the slide rail 6 of the beam bottom dismounting device.
Step three: and (4) retracting the two side operating platforms 3.
Step four: the push-button control driving device 13 on the manual operation general control box 14 controls the push-buttons to integrally remove the template rack supporting device.
Step five: and a supporting device is arranged on the upward integral hoisting template and is installed at the upper layer position.
The above-mentioned embodiments are merely provided for more clearly illustrating the technical solutions of the present invention, and are not intended to limit the present invention, and the modifications of the technical solutions of the present invention by those skilled in the art based on the common general knowledge in the field are also within the scope of the present invention.
Claims (10)
1. The integral self-disassembling type beam bottom supporting device comprises a template truss supporting device, a supporting adjusting device, a disassembling device and a master control box (14), wherein the supporting adjusting device is arranged at two ends of the template truss supporting device and used for supporting the template truss supporting device, and the master control box is in electro-hydraulic connection with the template truss supporting device, the supporting adjusting device and the disassembling device to play a role in overall control; the method is characterized in that:
the template truss supporting device is mainly formed by integrating a supporting truss (1), a beam bottom template (2) and an operating platform (3), and is convenient to assemble, disassemble and assemble; the operating platform (3) comprises a platform plate (31), a railing (32), a hydraulic rod (11) and a hydraulic device (10), and the platform plate and the railing can be controlled to be lifted and retracted by the hydraulic device (10) through the hydraulic rod (11) during installation and disassembly;
the supporting and adjusting device mainly comprises a supporting device (5) and an adjusting jack (4), the supporting device (5) is fixed on a wall through an anchor bolt, the bottom of the adjusting jack (4) is fixed on the supporting device (5), and the top of the adjusting jack (4) supports the template truss supporting device; the supporting device (5) can adjust the installation height, and the supporting height can be adjusted and removed through the adjusting jack (4);
the dismounting device consists of a sliding rail (6), a roller (7), a rack (8), a gear (9), a driving device (13) and a distance sensor (12), the roller (7), the gear (9), the driving device (13) and the distance sensor (12) are respectively installed at two ends of a supporting device of the template , the driving device (13) is in driving connection with the gear (9) and the roller (7), and the sliding rail (6) and the rack (8) are fixed on the supporting device (5); when the formwork truss support device is dismounted, the jack (4) is adjusted to contract, the roller (7) and the gear (9) fall down and are respectively contacted with the sliding rail (6) and the rack (8), and then the driving device (13) can drive the gear (9) to enable the formwork truss support device to slide out along the sliding rail (6), so that automatic operation is realized;
the master control box (14) comprises an electric drive synchronous system, a hydraulic control synchronous system and a position monitoring and correlation system, and the electric drive synchronous system and the hydraulic control synchronous system can control the synchronous motion of the driving device (13), the hydraulic device (10) or the adjusting jack (4); the position monitoring and correlation system can simultaneously receive signals transmitted by the distance sensors (12), so that emergency braking is realized and accidents are prevented.
2. The integral self-disassembling beam bottom supporting device according to claim 1, wherein: the supporting truss (1) is composed of an upper chord (101), a lower chord (102), a vertical rod (103), an inclined rod (104), an upper cross rod (107) and a lower cross rod (108), and the vertical rod (103) and the inclined rod (104) are connected between the upper chord (101) and the lower chord (102); an upper cross rod (107) and a lower cross rod (108) are respectively arranged between the two upper chords (101) and between the two lower chords (102); the inclined rods (104) are connected between the adjacent vertical rods (103).
3. The integral self-disassembling beam bottom supporting device according to claim 2, wherein: hydraulic stem (11) one end articulates in montant (103) lower part, and one end articulates the middle part of landing slab (31), the articulated setting in inner of landing slab (31) is in on chord member (101).
4. The integral self-disassembling beam bottom supporting device according to claim 2, wherein: railing (32) bottom with landing slab (31) outer end is articulated, railing (32) middle and lower part still articulates and is provided with a connecting rod (321), connecting rod (321) other end with hydraulic stem (11) tip is articulated in landing slab (31) position department, is used for the control of zooming railing (32).
5. The integral self-disassembling beam bottom supporting device according to claim 2, wherein: the rack (8) is arranged on the inner side of the sliding rail (6), the rack (8) corresponds to the gear (9) up and down, and the sliding rail (6) corresponds to the roller (7) up and down.
6. The integral self-disassembling beam bottom supporting device according to claim 2, wherein: the distance sensors (12) are symmetrically arranged on two sides of the roller (7) and vertically correspond to the slide rails (6); the rollers (7) are symmetrically arranged on two sides of the gear (9).
7. The integral self-disassembling beam bottom supporting device according to claims 1-6, wherein: the sliding rail (6) and the rack (8) extend towards one side of the supporting and adjusting device.
8. The integral self-disassembling beam bottom supporting device according to claim 7, wherein: a reinforcing column (501) is further arranged on one side of the supporting device (5), and a first inclined support (502) and a second inclined support (503) are further respectively arranged between the reinforcing column (501) and the sliding rail (6).
9. The integral self-disassembling beam bottom supporting device according to claim 8, wherein: two ends of the first inclined strut (502) are respectively fixedly connected with the middle part of the reinforcing column (501) and the middle part of the sliding rail (6); and two ends of the second inclined support (503) are respectively and fixedly connected with the bottom of the reinforcing column (501) and the outer end part of the sliding rail (6) for enhancing the supporting force.
10. The integral self-disassembling beam bottom support device according to claim 9, wherein: the first inclined strut (502) and the second inclined strut (503) are arranged in parallel.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202011507651.1A CN112696013B (en) | 2020-12-18 | 2020-12-18 | Integral self-disassembling type beam bottom supporting device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202011507651.1A CN112696013B (en) | 2020-12-18 | 2020-12-18 | Integral self-disassembling type beam bottom supporting device |
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| Publication Number | Publication Date |
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| CN112696013A true CN112696013A (en) | 2021-04-23 |
| CN112696013B CN112696013B (en) | 2022-05-27 |
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| CN202011507651.1A Active CN112696013B (en) | 2020-12-18 | 2020-12-18 | Integral self-disassembling type beam bottom supporting device |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113526061A (en) * | 2021-07-26 | 2021-10-22 | 中材建设有限公司 | Self-adjusting material loading device |
| CN113585330A (en) * | 2021-08-10 | 2021-11-02 | 杭州伟业建设集团有限公司 | Steel formwork device and anti-tilting method for cast-in-place concrete retaining wall |
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| JPH0518106A (en) * | 1991-07-17 | 1993-01-26 | Mitsubishi Heavy Ind Ltd | Constructing device for concrete building |
| CN102080451A (en) * | 2009-11-27 | 2011-06-01 | 中冶天工建设有限公司 | Construction method of industrial factory building grid |
| CN202953682U (en) * | 2012-11-15 | 2013-05-29 | 广州市京龙工程机械有限公司 | Hydraulic inverted plate door with folding guardrail |
| CN204002855U (en) * | 2014-08-29 | 2014-12-10 | 中铁一局集团有限公司 | PBA engineering method Station two lining button arch sliding form frames |
| CN205224649U (en) * | 2015-12-09 | 2016-05-11 | 山西四建集团有限公司 | Liftable formula composite floor slab support system |
| CN105603883A (en) * | 2016-03-04 | 2016-05-25 | 中国水利水电第十四工程局有限公司 | Bridge capping beam or tie beam formwork support adjusting device and application |
| CN108035741A (en) * | 2018-02-05 | 2018-05-15 | 三门峡市水利勘测设计有限责任公司 | A kind of backform trolley |
| CN210482710U (en) * | 2019-08-08 | 2020-05-08 | 湖南建工集团有限公司 | Assembled template truss strutting arrangement |
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2020
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH0518106A (en) * | 1991-07-17 | 1993-01-26 | Mitsubishi Heavy Ind Ltd | Constructing device for concrete building |
| CN102080451A (en) * | 2009-11-27 | 2011-06-01 | 中冶天工建设有限公司 | Construction method of industrial factory building grid |
| CN202953682U (en) * | 2012-11-15 | 2013-05-29 | 广州市京龙工程机械有限公司 | Hydraulic inverted plate door with folding guardrail |
| CN204002855U (en) * | 2014-08-29 | 2014-12-10 | 中铁一局集团有限公司 | PBA engineering method Station two lining button arch sliding form frames |
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Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113526061A (en) * | 2021-07-26 | 2021-10-22 | 中材建设有限公司 | Self-adjusting material loading device |
| CN113585330A (en) * | 2021-08-10 | 2021-11-02 | 杭州伟业建设集团有限公司 | Steel formwork device and anti-tilting method for cast-in-place concrete retaining wall |
| CN113585330B (en) * | 2021-08-10 | 2022-07-08 | 杭州伟业建设集团有限公司 | Steel formwork device and anti-tilting method for cast-in-place concrete retaining wall |
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| Publication number | Publication date |
|---|---|
| CN112696013B (en) | 2022-05-27 |
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