CN110230396B - Support changing method for pouring positioning and early-dismantling formwork of large-span beam - Google Patents
Support changing method for pouring positioning and early-dismantling formwork of large-span beam Download PDFInfo
- Publication number
- CN110230396B CN110230396B CN201910434573.8A CN201910434573A CN110230396B CN 110230396 B CN110230396 B CN 110230396B CN 201910434573 A CN201910434573 A CN 201910434573A CN 110230396 B CN110230396 B CN 110230396B
- Authority
- CN
- China
- Prior art keywords
- frame
- supporting
- pouring
- limiting
- cylinder
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Active
Links
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
- 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
-
- 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
- E04G25/06—Shores or struts; Chocks telescopic with parts held together by positive means
Landscapes
- 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 a support replacing method for pouring positioning and early formwork removal of a large span beam, belonging to the technical field of large span beam pouring and comprising the following operation steps of: the method comprises the following steps of firstly positioning a plurality of short supporting tubes at fixed points according to a beam pouring structure and arranging the short supporting tubes in a square array, then placing a long supporting tube on each short supporting tube, and sleeving the short supporting tubes in a clamping and embedding manner through pipe fitting clamp phase grooves. And then the limiting frame supporting frame is lifted to the position which is in embedded type socket joint with the supporting top plate through the cylinder limiting hoop which is in socket joint with the long supporting pipe, and the span beam is hoisted to pour the limiting frame. And then, laying a platform pouring support frame on the platform plate support angle frame, and finishing the processes of steel bar laying and one-time concrete pouring. The device has the advantages of high structural strength, convenience in installation, universality in material selection, stable quality, short period and high utilization rate. The problem of support piece turnover difficulty is solved. The quality stability of concrete structure integrative pouring is improved. And on the premise of ensuring safe construction, the working strength is reduced.
Description
Technical Field
The invention relates to the technical field of large-span beam pouring, in particular to a support changing method for large-span beam pouring positioning and early formwork removal.
Background
According to concrete strength requirements of concrete structural engineering construction specifications when a cast-in-place structural beam bottom die is dismantled, the span of the beam member is larger than 8m, and when the concrete strength grade value reaches 100% of the designed value, the template and the support can be completely dismantled. When the span is less than 8m, the formwork and the support can be detached as long as the concrete strength grade value reaches 75% of the design. The concrete with 100% strength inevitably causes more templates and supports to be unavailable for use in a long time period, and the time benefit and the economic benefit are poor.
In the current concrete structure engineering construction process, a cast-in-place structure beam bottom die can be dismantled through a beam bottom die, a platform supporting plate and a supporting column until a concrete structure is 100% formed. The concrete structure is deformed if the concrete structure is removed in advance, so that the plane is horizontally inclined. Fault cracking can also occur seriously.
Disclosure of Invention
The invention mainly solves the defects of long period, difficult turnover of the supporting piece, large material using amount and complex installation in the prior art, provides the support changing method for the pouring positioning and early-dismantling formwork of the beam with the larger span, has the advantages of high structural strength, convenient installation, common material selection, stable quality, short period and high utilization rate, and solves the problem of difficult turnover of the supporting piece. The quality stability of concrete structure integrative pouring is improved. And on the premise of ensuring safe construction, the working strength is reduced. The large span is changed into the small span, so that the turnover material of the construction site can be utilized to the maximum benefit.
The technical problem of the invention is mainly solved by the following technical scheme:
a support replacing method for pouring positioning and early formwork dismantling of a large span beam comprises the following operation steps:
the first step is as follows: according to the beam pouring structure, a plurality of short supporting tubes are positioned at fixed points and arranged in a square array, then long supporting tubes are placed on each short supporting tube, and the short supporting tubes and the long supporting tubes are fixedly sleeved with the short supporting tubes and the long supporting tubes in an embedded mode through pipe fitting clamps. The distance between the short supporting pipes is less than 8 meters.
The second step is that: then the limiting frame supporting frame is lifted to the position sleeved with the supporting top plate in a clamping and embedding manner through the air cylinder limiting hoop sleeved with the long supporting pipe, and the hoisting span beam is cast with the limiting frame, so that the hoisting span beam is cast with the limiting frame and is embedded with the limiting frame supporting frame in a limiting and supporting manner.
The third step: after the span beam is poured with the limiting frame for hoisting, the platform pouring support frame is laid on the platform plate supporting corner bracket, and meanwhile, the platform pouring support frame is attached to the span beam pouring limiting frame.
The fourth step: and carrying out steel bar laying and one-time concrete pouring processes on the span beam pouring groove, the span beam pouring limiting frame and the platform pouring support frame.
The fifth step: when the strength grade reaches about 75% in the reinforced concrete solidification process, the air cylinder limiting hoop drives the limiting frame supporting frame to descend, and meanwhile, the span beam pouring limiting frame and the platform pouring supporting frame are detached, and the support of the long supporting tube and the short supporting tube is kept. The limiting hoop of the cylinder, the limiting frame supporting frame, the span beam pouring limiting frame and the platform pouring supporting frame can be flexibly turned over, the total construction period of a plurality of beam pouring structure projects is saved, and the waste of human resources and the time delay period are avoided.
And a sixth step: when the strength grade reaches 100% in the reinforced concrete solidification process, the pipe fitting clamp is unscrewed, the short supporting pipe is knocked out, and meanwhile, the long supporting pipe dismantling process is completed.
Preferably, the cylinder limiting hoop and the limiting frame supporting frame are of an integrated welding structure, and the cylinder limiting hoop is a lifting cylinder symmetrically distributed through two ends of the long supporting pipe, so that the up-and-down lifting process that the cylinder limiting hoop drives the limiting frame supporting frame is realized.
Preferably, the cylinder limiting hoop and the lifting cylinder are fixedly connected through a cylinder upper lug plate seat, and the lifting cylinder is fixedly connected with the ground through a cylinder lower lug plate seat; the upper lug plate seat and the lower lug plate seat of the air cylinder are both fixedly connected with the lifting air cylinder in a pin shaft type nested manner, and the limiting hoop of the air cylinder is integrally welded and fixed with the upper lug plate seat of the air cylinder.
As preferred, the support frame is pour to the platform adopts flange cardboard and recess cardboard to distribute on both sides, is equipped with a plurality of transition cardboards of inserting connection fixed of inserting each other between flange cardboard and recess cardboard.
Preferably, the upper end face of the platform pouring support frame is flush with the upper end face of the span beam pouring limiting frame, the upper end face of the platform plate supporting angle frame is flush with the upper end face of the limiting frame supporting frame, and the platform plate supporting angle frame is of an L-shaped structure.
Preferably, the limiting frame supporting frame is of a cross-shaped structure, the limiting frame supporting frame is formed by welding a limiting frame bottom plate and a limiting frame side protecting plate, and a step clamping groove movably embedded with the supporting top plate is formed in the limiting frame bottom plate.
Preferably, reinforcing steel bars which are transversely and radially staggered and overlapped are arranged in the span beam pouring groove and above the span beam pouring limiting frame and the platform pouring support frame, and then the reinforcing steel bars are wound and bound at the transverse and radial staggered and overlapped intersection points through the steel wires.
The invention can achieve the following effects:
compared with the prior art, the support replacing method for the pouring positioning of the large span beam and the early-dismantling formwork has the advantages of high structural strength, convenience in installation, universality in material selection, stable quality, short period and high utilization rate, and solves the problem of difficulty in turnover of the supporting piece. The quality stability of concrete structure integrative pouring is improved. And on the premise of ensuring safe construction, the working strength is reduced. The large span is changed into the small span, so that the turnover material of the construction site can be utilized to the maximum benefit.
Drawings
Fig. 1 is a schematic structural view of the present invention.
Fig. 2 is a schematic structural view of the support formwork assembly of the present invention.
Fig. 3 is a schematic structural view of the limiting frame support frame of the present invention.
Fig. 4 is a schematic structural view of the platform casting support frame of the present invention.
Fig. 5 is a structural sectional view of the span beam pouring limiting frame of the invention.
In the figure: support template frame subassembly 1, spacing 2 is pour to the span roof beam, groove 3 is pour to the span roof beam, landing slab support angle frame 4, support frame 5 is pour to the platform, spacing carriage 6, supporting roof 7, the spacing staple bolt 8 of cylinder, long supporting tube 9, otic placode seat 10 on the cylinder, lift cylinder 11, pipe fitting clamp 12, short supporting tube 13, otic placode seat 14 under the cylinder, spacing bottom plate 15, spacing side guard board 16, step draw-in groove 17, flange cardboard 18, transition cardboard 19, recess cardboard 20.
Detailed Description
The technical scheme of the invention is further specifically described by the following embodiments and the accompanying drawings.
Example (b): as shown in fig. 1-5, a method for replacing a brace of a large span beam pouring location and an early-dismantling formwork comprises the following operation steps:
the first step is as follows: 288 short stay tubes 3 are positioned at fixed points according to a beam pouring structure and are arranged in a square array, then a long stay tube 9 is placed on each short stay tube 13, and the short stay tubes 13 and the long stay tubes 9 are fixedly connected with the grooves on the short stay tubes 13 and the long stay tubes 9 in a clamping and embedding manner through pipe fitting clamps 12. Realize that short stay tube 13 and long stay tube 9 are staple bolt formula integration connection structure, make things convenient for the dismantlement in the future when keeping supporting strength.
The second step is that: then the limiting frame supporting frame 6 is lifted to the position sleeved with the supporting top plate 7 in a clamping and embedding manner through the cylinder limiting hoop 8 sleeved with the long supporting tube 9, and the hoisting span beam is hoisted to pour the limiting frame 2, so that the hoisting span beam is poured to embed the limiting frame 2 and the limiting frame supporting frame 6 in a limiting and supporting clamping and embedding manner. The limiting hoop 8 of the cylinder and the limiting frame supporting frame 6 are of an integrated welding structure, the limiting hoop 8 of the cylinder is a lifting cylinder 11 which is symmetrically distributed at two ends of the long supporting tube 9, and the up-down lifting process that the limiting hoop 8 of the cylinder drives the limiting frame supporting frame 6 is achieved. The elevating speed of cylinder is 2 meters per minute, and the dead phenomenon of card appears in order to prevent that the spacing staple bolt 8 of cylinder from long supporting tube 9 simultaneously, all loosens the bolt of the spacing staple bolt 8 of cylinder at the lift in-process. After the concrete is lifted in place, the bolts of the locking air cylinders for limiting the anchor ears 8 prevent the concrete from falling down in the one-time pouring process.
The cylinder limiting hoop 8 and the lifting cylinder 11 are fixedly connected through a cylinder upper lug plate seat 10, and the lifting cylinder 11 and the ground are fixedly connected through a cylinder lower lug plate seat 14; the upper air cylinder lug plate seat 10 and the lower air cylinder lug plate seat 14 are both fixedly connected with the lifting air cylinder 11 in a pin shaft type nested manner, and the air cylinder limiting hoop 8 and the upper air cylinder lug plate seat 10 are integrally welded and fixed. The limiting frame supporting frame 6 is of a cross-shaped structure, the limiting frame supporting frame 6 is formed by welding a limiting frame bottom plate 15 and a limiting frame side protecting plate 16, and a step clamping groove 17 movably clamped and embedded with the supporting top plate 7 is formed in the limiting frame bottom plate 15. Support the hoist and mount span roof beam through spacing bottom plate 15 and pour spacing 2, spacing side guard plate 16 plays the stable limiting displacement who pours spacing 2 to supporting the hoist and mount span roof beam.
The third step: after the span beam is poured with the limiting frame 2 for hoisting, the platform pouring support frame 5 is laid on the platform plate supporting corner bracket 4, and meanwhile, the platform pouring support frame 5 is attached to the span beam pouring limiting frame 2. The platform board supporting angle bracket 4 is fixedly connected with the limiting bracket side guard board 16 in a welding way. The platform pouring support frame 5 is formed by distributing a flange clamping plate 18 and a groove clamping plate 20 on two sides, and 6 mutually embedded and connected and fixed transition clamping plates 19 are arranged between the flange clamping plate 18 and the groove clamping plate 20. The upper end face of the platform pouring support frame 5 and the upper end face of the span beam pouring limiting frame 2 are flush with each other, the upper end face of the platform plate supporting angle frame 4 and the upper end face of the limiting frame supporting frame 6 are flush with each other, and the platform plate supporting angle frame 4 is of an L-shaped structure. Make the effective supporting platform of landing slab support angle frame 4 ability pour support frame 5, guarantee simultaneously that the platform pours support frame 5 and the terminal surface highly uniform that spacing frame 2 was pour to the span roof beam, improve the structural strength and the stability that great span roof beam was pour.
The fourth step: and carrying out steel bar laying and one-time concrete pouring processes on the span beam pouring groove 3, the span beam pouring limiting frame 2 and the platform pouring support frame 5. All set up horizontal and crisscross coincide's reinforcing bar in the groove 3 is pour to the span roof beam, the spacing 2 is pour to the span roof beam and the top of support frame 5 is pour to the platform, and the rethread steel wire is fixed to the reinforcing bar horizontal and crisscross coincide intersection department of winding binding.
The fifth step: when the strength grade reaches about 75% in the reinforced concrete solidification process, the air cylinder limiting hoop 8 drives the limiting frame supporting frame 6 to descend, and meanwhile, the span beam pouring limiting frame 2 and the platform pouring supporting frame 5 are detached, and the support of the long supporting tube 9 and the short supporting tube 13 is kept. The limiting hoop 8 of the cylinder, the limiting frame supporting frame 6, the span beam pouring limiting frame 2 and the platform pouring supporting frame 5 are flexibly turned over, the total construction period of a plurality of beam pouring structure projects is saved, and waste of human resources and time delay periods are avoided.
And a sixth step: when the strength grade reaches 100% in the reinforced concrete solidification process, the pipe fitting clamp 12 is unscrewed, the short supporting pipe 13 is knocked out, and meanwhile, the dismantling process of the long supporting pipe 9 is completed.
In conclusion, the support replacing method for the pouring positioning and early-dismantling formwork of the large-span beam has the advantages of high structural strength, convenience in installation, universality in material selection, stable quality, short period and high utilization rate, and solves the problem of difficulty in turnover of the supporting piece. The quality stability of concrete structure integrative pouring is improved. And on the premise of ensuring safe construction, the working strength is reduced. The large span is changed into the small span, so that the turnover material of the construction site can be utilized to the maximum benefit.
The above description is only an embodiment of the present invention, but the structural features of the present invention are not limited thereto, and any changes or modifications within the scope of the present invention by those skilled in the art are covered by the present invention.
Claims (4)
1. The support changing method for pouring positioning and early formwork dismantling of the large span beam is characterized by comprising the following steps of: the method comprises the following operation steps:
the first step is as follows: positioning a plurality of short supporting tubes (13) at fixed points according to a beam pouring structure and arranging the short supporting tubes in a square array, then placing a long supporting tube (9) on each short supporting tube (13), and fixedly connecting the short supporting tubes (13) and the long supporting tubes (9) with grooves on the short supporting tubes (13) and the long supporting tubes (9) in a clamping and embedding manner through pipe fitting clamps (12);
the second step is that: then the limiting frame supporting frame (6) is lifted to a position which is in embedded type sleeve joint with the supporting top plate (7) through a cylinder limiting hoop (8) which is in sleeve joint with the long supporting tube (9), and at the moment, the hoisting span beam is hoisted to pour the limiting frame (2), so that the hoisting span beam pouring limiting frame (2) is in embedded type with the limiting frame supporting frame (6) in a limiting supporting manner;
the third step: after the span beam pouring limiting frame (2) is hoisted, a platform pouring supporting frame (5) is laid on the platform plate supporting angle frame (4), and meanwhile, the platform pouring supporting frame (5) is attached to the span beam pouring limiting frame (2);
the platform pouring support frame (5) is formed by distributing flange clamping plates (18) and groove clamping plates (20) on two sides, and a plurality of transition clamping plates (19) which are mutually embedded and fixedly connected are arranged between the flange clamping plates (18) and the groove clamping plates (20);
the upper end surface of the platform pouring support frame (5) is flush with the upper end surface of the span beam pouring limiting frame (2), the upper end surface of the platform plate supporting angle frame (4) is flush with the upper end surface of the limiting frame supporting frame (6), and the platform plate supporting angle frame (4) is of an L-shaped structure;
the fourth step: the process of steel bar laying and one-time concrete pouring is carried out on the span beam pouring groove (3), the span beam pouring limiting frame (2) and the platform pouring support frame (5);
reinforcing steel bars which are transversely and radially staggered and overlapped are arranged in the span beam pouring groove (3) and above the span beam pouring limiting frame (2) and the platform pouring support frame (5), and then the reinforcing steel bars are wound, bound and fixed at the transverse and radial staggered and overlapped intersection points through the steel wires;
the fifth step: when the strength grade of the reinforced concrete in the solidification process reaches about 75%, the air cylinder limiting hoop (8) drives the limiting frame supporting frame (6) to descend, and meanwhile, the span beam pouring limiting frame (2) and the platform pouring supporting frame (5) are removed, and the long supporting tube (9) and the short supporting tube (13) are kept supported;
and a sixth step: when the strength grade of the reinforced concrete in the solidification process reaches 100%, the pipe fitting clamp (12) is unscrewed, the short supporting pipe (13) is knocked out, and meanwhile, the dismantling process of the long supporting pipe (9) is completed.
2. The method for replacing the support of the large span beam pouring positioning and early-dismantling formwork according to claim 1, is characterized in that: the limiting hoop (8) of the cylinder and the limiting frame supporting frame (6) are of an integrated welding structure, the limiting hoop (8) of the cylinder is a lifting cylinder (11) which is symmetrically distributed through two ends of the long supporting tube (9), and the up-down lifting process that the limiting hoop (8) of the cylinder drives the limiting frame supporting frame (6) is achieved.
3. The method for replacing the support of the large span beam pouring positioning and early-dismantling formwork according to claim 2, is characterized in that: the cylinder limiting hoop (8) and the lifting cylinder (11) are fixedly connected through a cylinder upper lug plate seat (10), and the lifting cylinder (11) is fixedly connected with the ground through a cylinder lower lug plate seat (14); the upper lug plate seat (10) and the lower lug plate seat (14) of the cylinder are both fixedly connected with the lifting cylinder (11) in a pin shaft type nested manner, and the limiting hoop (8) of the cylinder is integrally welded and fixed with the upper lug plate seat (10) of the cylinder.
4. The method for replacing the support of the large span beam pouring positioning and early-dismantling formwork according to claim 1, is characterized in that: the limiting frame supporting frame (6) is of a cross-shaped structure, the limiting frame supporting frame (6) is formed by welding a limiting frame bottom plate (15) and a limiting frame side protecting plate (16), and a step clamping groove (17) movably clamped and embedded with the supporting top plate (7) is formed in the limiting frame bottom plate (15).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910434573.8A CN110230396B (en) | 2019-05-23 | 2019-05-23 | Support changing method for pouring positioning and early-dismantling formwork of large-span beam |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910434573.8A CN110230396B (en) | 2019-05-23 | 2019-05-23 | Support changing method for pouring positioning and early-dismantling formwork of large-span beam |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN110230396A CN110230396A (en) | 2019-09-13 |
| CN110230396B true CN110230396B (en) | 2021-05-11 |
Family
ID=67861556
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201910434573.8A Active CN110230396B (en) | 2019-05-23 | 2019-05-23 | Support changing method for pouring positioning and early-dismantling formwork of large-span beam |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN110230396B (en) |
Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE2839371A1 (en) * | 1977-09-10 | 1979-03-22 | Joseph Maurice Zaidan | TUBE STRUT |
| CN104675145A (en) * | 2015-02-15 | 2015-06-03 | 泰博混凝土模板与支撑（陕西）有限公司 | Supporting system for casting concrete floor slab and beam bottom template |
| CN108560908A (en) * | 2018-01-26 | 2018-09-21 | 东莞市九豪投资有限公司 | A kind of support device of early stripping formwork system |
| US10184257B2 (en) * | 2011-12-12 | 2019-01-22 | Mark Allen BUCKINGHAM | Jacking pole |
-
2019
- 2019-05-23 CN CN201910434573.8A patent/CN110230396B/en active Active
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE2839371A1 (en) * | 1977-09-10 | 1979-03-22 | Joseph Maurice Zaidan | TUBE STRUT |
| US10184257B2 (en) * | 2011-12-12 | 2019-01-22 | Mark Allen BUCKINGHAM | Jacking pole |
| CN104675145A (en) * | 2015-02-15 | 2015-06-03 | 泰博混凝土模板与支撑（陕西）有限公司 | Supporting system for casting concrete floor slab and beam bottom template |
| CN108560908A (en) * | 2018-01-26 | 2018-09-21 | 东莞市九豪投资有限公司 | A kind of support device of early stripping formwork system |
Also Published As
| Publication number | Publication date |
|---|---|
| CN110230396A (en) | 2019-09-13 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN105401679A (en) | Large-gradient cast-in-place concrete inclined roof construction method | |
| CN107653781A (en) | Big steel pipe truss and construction method for bent cap cast-in-place construction | |
| CN110644371A (en) | Prefabricated capping beam installation method and system | |
| CN110206144A (en) | A kind of construction method of reinforced concrete column bean column node | |
| CN108661313A (en) | A kind of cast-in-place linkage section mould plate supporting device of tool-type concrete folding plate | |
| CN113863166A (en) | Reverse construction method for mounting support after rotating | |
| CN105649248A (en) | Fabricated prestressed concrete hollow slab and cast-in-place beam integrated construction method | |
| CN105442453A (en) | Construction method for suspension bridge tower crossbeam combination support | |
| CN113373815A (en) | Construction method for on-site wet joint of prefabricated bent cap | |
| CN110230396B (en) | Support changing method for pouring positioning and early-dismantling formwork of large-span beam | |
| CN218061492U (en) | Device for pouring concrete platform on steel structure frame | |
| CN201347590Y (en) | Quick connection and calibration clamp for steel column joint | |
| CN101693389A (en) | Method for precast concrete template | |
| CN210482242U (en) | Cylindrical tail water surge chamber impedance plate concrete pouring combined supporting system | |
| CN115045505A (en) | Device for pouring concrete platform on steel structure frame and construction method | |
| CN205296821U (en) | Oblique roofing formwork system of heavy grade cast in situ concrete | |
| CN212052342U (en) | Construction auxiliary tool is transversely widened to prestressed concrete T roof beam of scalable regulation | |
| CN207331733U (en) | A kind of concrete column leg structure | |
| CN208718360U (en) | A kind of cast-in-place linkage section mould plate supporting device of tool-type concrete folding plate | |
| CN105088960B (en) | A kind of tower crane method to set up being applied on bridge | |
| CN206553938U (en) | Bridge pier integral formwork support one-shot forming structure | |
| CN209854649U (en) | Bottom adjusting and reinforcing device for vertical steel formwork | |
| CN218406078U (en) | Cutting-free recyclable inner frame steel pipe bottom support | |
| CN210060272U (en) | Early-dismantling head welding tool | |
| CN217078435U (en) | Bridge side span cast-in-place construction support system |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PB01 | Publication | ||
| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| GR01 | Patent grant | ||
| GR01 | Patent grant |