CN107227842A - Post-cast strip adjustable steel support system and application method - Google Patents
Post-cast strip adjustable steel support system and application method Download PDFInfo
- Publication number
- CN107227842A CN107227842A CN201710458580.2A CN201710458580A CN107227842A CN 107227842 A CN107227842 A CN 107227842A CN 201710458580 A CN201710458580 A CN 201710458580A CN 107227842 A CN107227842 A CN 107227842A
- Authority
- CN
- China
- Prior art keywords
- post
- cast strip
- vertical rod
- support system
- adjustable steel
- 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.)
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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
- E04G11/36—Forms, shutterings, or falsework for making walls, floors, ceilings, or roofs for floors, ceilings, or roofs of plane or curved surfaces end formpanels for floor shutterings
- E04G11/48—Supporting structures for shutterings or frames for floors or roofs
-
- 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
- E04G11/36—Forms, shutterings, or falsework for making walls, floors, ceilings, or roofs for floors, ceilings, or roofs of plane or curved surfaces end formpanels for floor 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
- E04G25/04—Shores or struts; Chocks telescopic
- E04G25/06—Shores or struts; Chocks telescopic with parts held together by positive means
- E04G25/065—Shores or struts; Chocks telescopic with parts held together by positive means by a threaded nut
Abstract
The present invention provides a kind of post-cast strip adjustable steel support system and application method, and system includes：Vertical rod, cross bar and support panel, the vertical rod and cross bar are connected by universal buckle, and the support panel is arranged at the top of the vertical rod.The system can be reused to the post-cast strip of different floor heights by way of adjusting vertical rod height；It is prevented effectively from the phenomenon that post-cast strip both sides conventional template supports premature removal, it is ensured that post-cast strip stress and Stability Analysis of Structures；The material of plank sheathing support system has been had enough to meet the need simultaneously, has saved cost.
Description
Technical field
The present invention relates to the support system in a kind of architectural engineering, more particularly to a kind of post-cast strip adjustable steel support system and
Application method.
Background technology
At present, often there is Overlong Concrete Structure in building engineering construction, in overlength top plate cast-in-place concrete structure,
One of post-cast strip is set every 30-40m according to code requirement, post-cast strip position is still needed to after the full hall frame in periphery and form removable
There is support system, the support system of post-cast strip both sides is completed to the whole of post-cast strip concreting closing in post-cast strip formwork
During do not allow to loosen or remove.And often in reality, late poured band support system often occur or support bar is removed
Phenomenon, causes roof break, serious influence structure safety；Meanwhile, post-cast strip particularly pouring after settlement generally requires very long
Time could be closed, and common 33 layers of house, which usually requires more than 10 months time, to be closed, and late poured band support system takes
The turnover material resources such as a large amount of templates, wooden a tree, used in making timber for boats, steel pipe and fastener.
The content of the invention
The present invention is a large amount of all in order to solve easily to tear open post-cast strip both sides steel pipe support and occupancy during form removal in the prior art by mistake
There is provided a kind of post-cast strip adjustable steel support system and application method for the problem of turning material resources.
In order to solve the above problems, the technical solution adopted by the present invention is as described below：
A kind of post-cast strip adjustable steel support system includes：Vertical rod, cross bar and support panel, the vertical rod and cross bar pass through ten thousand
To button connection, the support panel is arranged at the top of the vertical rod.
Preferably, the height of the vertical rod can be adjusted, including setting of casing, upper intubation and tunable arrangement composition；It is described can
Device is adjusted to include the equidistant pin hole for being arranged on the upper intubation and the adjustable silk braid being arranged on the setting of casing.
Preferably, the support panel is directly welded in vertical rod or is socketed vertical rod using jacking.
Preferably, the sectional dimension of the support panel is 100mm*200mm or 200mm*200mm, and thickness is 12mm-
15mm。
Preferably, the spacing of the vertical rod is 900mm-1200mm；The vertical rod uses regularization steel pipe, the vertical rod
Wall thickness is 2.5mm-3mm.
Preferably, the cross bar spacing is 1600mm-2000mm, and caliber is 48mm-60mm.
Preferably, the setting of casing of the vertical rod and the caliber of upper intubation are respectively 60mm, 48mm, or respectively 80mm,
60mm。
Preferably, it is 100mm-200mm apart from post-cast strip Edge Distance；It is 1100mm- along the direction spacing of post-cast strip
1300mm。
Preferably, during the first time formwork of post-cast strip, the vertical supporting of plank sheathing support system is installed, the support panel is straight
Connect and contacted with concrete to be poured, casting concrete removes plank sheathing support system after concrete reaches intensity, after indwelling
Band adjustable steel support system is poured to continue to carry；During second of the formwork in post-cast strip, plank sheathing support system is installed, to be poured after pouring
Concrete at band, intensity is reached and after the solidifying phase wait the concrete poured, removes plank sheathing support system and post-cast strip adjustable steel branch
Support body system.
Preferably, by selecting the radius of gyration of the vertical rod or maintaining the vertical rod by the method for setting up the cross bar
Adjust the stability of height.
Beneficial effects of the present invention are：A kind of post-cast strip adjustable steel support system and application method are provided, the system is not to
Post-cast strip with floor height can be reused by way of adjusting vertical rod height；It is prevented effectively from post-cast strip both sides conventional template branch
Support the phenomenon of premature removal, it is ensured that post-cast strip stress and Stability Analysis of Structures；The material of plank sheathing support system, section have been had enough to meet the need simultaneously
About cost.
Brief description of the drawings
Fig. 1 is the post-cast strip adjustable steel support system schematic diagram of the embodiment of the present invention 1.
Fig. 2 is the another post-cast strip adjustable steel support system schematic diagram of the embodiment of the present invention 1.
Fig. 3 is the post-cast strip adjustable steel support system cross-sectional view of the embodiment of the present invention 1.
Fig. 4 is the vertical rod structural representation of the embodiment of the present invention 1.
Wherein, on 1- plank sheathings support system, 2- post-cast strips, 3- vertical rods, 4- cross bars, 5- support panels, 6- setting of casings, 7-
Intubation, 8- pin holes, 9- is adjustable silk braid.
Embodiment
The present invention is described in detail by specific embodiment below in conjunction with the accompanying drawings, for a better understanding of this hair
It is bright, but following embodiments are not intended to limit the scope of the invention.In addition, it is necessary to the diagram provided in explanation, following embodiments
Only illustrate the basic conception of the present invention in a schematic way, the only display component relevant with the present invention rather than according to reality in accompanying drawing
Component count, shape during implementation and size are drawn, shape, quantity and the ratio of it is actual when implementing each component can for one kind with
The change of meaning, and its assembly layout form may also be increasingly complex.
Embodiment 1
Post-cast strip adjustable steel support system schematic diagram as shown in Figure 1, Figure 2, Figure 3 shows, it includes：Vertical rod 3, cross bar 4 and branch
Panel 5 is supportted, the vertical rod 3 and cross bar 4 are connected by universal buckle, the support panel 5 is arranged on the top of vertical rod 3.After pour
The size of plank sheathing support system 1 and form with 2 adjustable steel support system and periphery are different, and carpenter easily recognizes, from branch
The mixed risk torn open of workman is just effectively reduced in support design.Steel structure support strength ratio conventional steel is big, and radical is few, and is not take up
The material such as plank sheathing and wooden a tree, used in making timber for boats, has much room from the angle for saving circulation material.
Gained enlightenment from aluminum alloy pattern plate Fast-dismantle system, using the vertical rod of aluminum alloy pattern plate, single support top and aluminium beam body system, aluminium beam directly with
Concrete surface is contacted, and the template on aluminium beam and periphery is overlapped, and aluminium beam is connected with list Zhi Dingyong pin selling sheets.Concrete reaches the solidifying phase
Afterwards, plank sheathing, aluminium beam and the accessory on periphery are removed, retains vertical rod and single support top.
The present invention uses the vertical rod 3 of similar aluminum template system, in the top welding steel of vertical rod 3 as support panel 5 with mixing
The contact of solidifying soil face, support panel 5 and the plank sheathing on periphery are overlapped, and the bracing members and support panel 5 that vertical rod 3 and cross bar 4 are constituted are made
For an entirety.Concrete was reached after the solidifying phase, removed the plank sheathing support system 1 on periphery, retained post-cast strip adjustable steel support body
System.Support panel 5 needs to punch on plank sheathing, but relative aluminium beam type has saved aluminium.
For aluminium beam type and panel type, it will be assumed that under vertical rod 3 and spacing same case, both aluminium beam and panel are carried out
Cost accounting (the selected length of post-cast strip 2 is 50m, and vertical rod 3 used is identical, and the spacing of vertical rod 3 is identical), according to cost accounting, if
A cost purchase is calculated, aluminium beam type is higher by much due to the high price of aluminium, material cost.It is advantageous to panel type for this
The used system of invention.
Basement in residence floor height is general in 3m-4.5m, and in the whole loading process of vertical rod 3, the rigidity of vertical rod 3 typically will not
Destroy, mainly instability status.Unstability increases mainly due to height, causes the slenderness ratio of vertical rod 3 excessive, so as to break
It is bad.And the mode of the slenderness ratio effectively changed is mainly the radius of gyration and effective length.The radius of gyration, which is mainly, to be considered
The caliber and wall thickness of vertical rod 3, effective length, which is mainly, sets up cross bar 4.
Comparative analysis is when caliber increases, radius of gyration change, slenderness ratio change, but overall stressing influence and little, together
When caliber increase, weight increase, difficulty of construction increases suddenly.Change the effective length of support, single top support computational length L0=H- plates
Thickness-cross bar height, can be clearly seen that, the change of the height of cross bar 4 easily changes the stress of vertical rod 3, together from comparative analysis table
Shi Zengshe cross bars 4 relatively increase for caliber, and application operability is more preferable.
Support panel 5 is directly welded in vertical rod 3 or is socketed vertical rod 3 using jacking.It is assumed that we select conventional most thick
Steel plate 15mm, its theoretical weight is 117.75kg/ ㎡, if our panel sizes are certain (according to the size of aluminum alloy pattern plate support panel 5
200mm*200mm is set), panel area S=0.04 ㎡, weight M=4.71kg, price is 5000 yuan/ton i.e. 5 yuan/kg, then single
Block panel price is 5*0.04=0.2 members, is 12 yuan according to artificial monolith surface plate weld labour cost, 1 yuan of the electricity charge, then single steel altogether
Plate expense is 13.2 yuan.
By the research to traditional plank sheathing support system 1, progress stress support is opened from jacking insertion vertical rod 3
Hair, is directly substituted for rectangular panel welding by the U-shaped support on top, so as to reach with treating that pouring concrete is contacted, produces a desired effect.
Vertical rod parameter is determined：
The spacing of vertical rod 3 is 900mm-1200mm；The vertical rod 3 uses regularization steel pipe, and the wall thickness of the aluminum alloy pattern plate is
2.5mm-3mm。
Gained enlightenment from aluminum alloy pattern plate, using this vertical rod 3, and pass through investigation, the outer length of tube of vertical rod 3 of large-scale manufacturer production
It is 2.4m, inner tube is 2.2m, so we are not handled length herein, only analyzes caliber.
As shown in Fig. 4 vertical rod structural representation, the height of vertical rod 3 can be adjusted, including setting of casing 6, upper intubation 7 and can
Adjust device composition；The tunable arrangement includes being arranged on the equidistant pin hole 8 of the upper intubation 7 and is arranged on described trap
Adjustable silk braid 9 on pipe 6.Can flexible modulation column various height, it is quick and easy for installation.
The caliber of vertical rod 3 is broadly divided into two kinds：Upper intubation 7 is that 48mm setting of casings 6 are 60mm and upper intubation 7 is 60mm setting of casings
6 be 80mm.And we have analyzed this two kinds of calibers and can reach stress requirement in adjustable mode.Preferably, applied to meet
Work scene operability and steel pipe weight, it is that 48mm setting of casings 6 are 60mm that can select intubation 7.
The wall thickness for the aluminum alloy pattern plate that vertical rod 3 is mainly used is generally between 2.5mm-3mm, is just surveyed with regard to this two end value of selection
Calculate.
According to cross sectional moment of inertia (I)=π D4/64- π d4/64；
When wall thickness is 2.5mm：I=92709.2mm4；
When wall thickness is 3.0mm：I=95947.4mm4；
Therefore wall thickness from 2.5mm-3.0mm increases, the increase of pair cross-section the moment of inertia is obvious, so as to overall stress
Influence is little, and 2.5mm can be selected by considering
When bracing members outer tube is φ 60 × 2.5, length 2.4m；Inner tube is φ 48 × 2.5, and length determines for 2.2m parameters
Afterwards, it is 900mm and 1200mm just analysis and measurements that the spacing of vertical rod 3 is assumed respectively：
Calculating parameter
Flooring maximum gauge=300mm；Flooring minimum thickness=150mm；Story height=3600mm
Single heights of roofs=3600-150=3450mm；Single top section area (A)=452mm2
Modulus of elasticity (E)=206000N/mm2
Cross sectional moment of inertia (I)=π D4/64- π d4/64=92709.2mm4
Template deadweight 0.25KN/ ㎡
Concrete building plate weighs 0.3 × 25.5=7.65KN/ ㎡
Construction loads 2.5KN/ ㎡
As the width 800mm of post-cast strip 2, the spacing of vertical rod 3 is 1200mm, and two edge-on bars 3 are 200mm apart from post-cast strip 2, can be with
Effectively avoid conflicting with plank sheathing support system 1.
Cross bar parameter is determined：
The spacing of cross bar 4 is 1600mm-2000mm, and caliber is 48mm-60mm.
By the understanding of the Fast-dismantle system to aluminum alloy pattern plate, use outer tube for the ㎜ of φ 60 × 2.5, inner tube is
The ㎜ of φ 48 × 2.5 adjustable steel pipe support.This project basement floor height is arranged according to 3.6m, so as to need to set
Cross bar 4.Spacing 1.6-2m is set to calculate stress respectively cross bar 4.
Single top support Compression Stability checking computations：
Single top support computational length L0=H- minimums thickness of slab-cross bar height
By calculating, σ is respectively less than 215KN/ ㎡, and formwork effect is all relatively good, still tested respectively by three kinds of spacing.
When the spacing of cross bar 4 be 1.6m when, cross bar 4 is low, and workmen is more difficult to be passed through, at the same with original wood formwork system
Height be provided with conflict.
When the spacing of cross bar 4 is 1.8m, personnel have passed through, it is not necessary to which support body can be mounted directly.
When the spacing of cross bar 4 is 2.0m, cross bar 4 is high, and installation personnel is difficult to lift support bar.
Support panel parameter is determined：
The sectional dimension of support panel 5 is 100mm*200mm or 200mm*200mm, and thickness is 12mm-15mm.
Steel plate thick 12mm, four sides consolidation.Acted on by concentrated force.Because of the ratio between thickness of slab and area of plane, ratio very little.Steel plate
Stress class in tension flexible plane body.And Q235 tensile strength is more than shearing resistance temperature.Structural damage form is：Steel
It is bad by drawing that plate is cut the edge constraint for wearing (punching failure) or plate.And according to the spacing of vertical rod 3, concrete according to maximum 60 degree down
Power transmission, determines that 200*200 stressed effects are much better than 100*200, meanwhile, the spacing of vertical rod 3 is determined, final panel spacing is also and then true
It is set to 1200mm.
Application method：
During the 2 first time formwork of post-cast strip, the bed die of post-cast strip 2 is not propped up, and only installs the vertical branch of plank sheathing support system 1
Support.Adjustable steel support system and do not stressed during first time formwork, what is still relied upon is common traditional plank sheathing support system stress.
Plank sheathing support system 1 can be removed after the side concrete of post-cast strip 2 two reaches solidifying phase and intensity, afterwards by adjustable steel support body
It is to be carried.
During 2 second of formwork of post-cast strip, the plank sheathing support system 1 of post-cast strip 2 will be installed all, to pour post-cast strip
Concrete at 2.Now adjustable steel support system still sentences stress, treat concrete that post-cast strip 2 has been poured reach intensity and
After the solidifying phase, adjustable steel support can be removed with second of formwork system.
Adjustable steel support system is 100mm-200mm apart from the Edge Distance of post-cast strip 2；It is along the direction spacing of post-cast strip 2
1100mm-1300mm。
Adjustable steel support applicating new process is employed, is found by tracking, does not occur support bar and loosens or remove phenomenon, close
Lattice rate has reached 100%, and the stress of post-cast strip 2 and Stability Analysis of Structures are ensure that well, while having had enough to meet the need material herein, saves
Cost.
Above content is to combine specific preferred embodiment further description made for the present invention, it is impossible to assert
The specific implementation of the present invention is confined to these explanations.For those skilled in the art, do not taking off
On the premise of from present inventive concept, some equivalent substitutes or obvious modification can also be made, and performance or purposes are identical, all should
When being considered as belonging to protection scope of the present invention.
Claims (10)
1. a kind of post-cast strip adjustable steel support system, it is characterised in that including：Vertical rod, cross bar and support panel, the vertical rod and
Cross bar is connected by universal buckle, and the support panel is arranged at the top of the vertical rod.
2. adjustable steel support system in post-cast strip as claimed in claim 1, it is characterised in that the height of the vertical rod can be adjusted
Section, including setting of casing, upper intubation and tunable arrangement composition；The tunable arrangement includes being arranged on the equidistant of the upper intubation
Pin hole and the adjustable silk braid being arranged on the setting of casing.
3. adjustable steel support system in post-cast strip as claimed in claim 1, it is characterised in that the support panel is directly welded at
Vertical rod is socketed in vertical rod or using jacking.
4. adjustable steel support system in post-cast strip as claimed in claim 1, it is characterised in that the sectional dimension of the support panel
For 100mm*200mm or 200mm*200mm, thickness is 12mm-15mm.
5. adjustable steel support system in post-cast strip as claimed in claim 1, it is characterised in that the spacing of the vertical rod is 900mm-
1200mm；The vertical rod uses regularization steel pipe, and the wall thickness of the vertical rod is 2.5mm-3mm.
6. adjustable steel support system in post-cast strip as claimed in claim 1, it is characterised in that the cross bar spacing is 1600mm-
2000mm, caliber is 48mm-60mm.
7. adjustable steel support system in post-cast strip as claimed in claim 2, it is characterised in that the setting of casing of the vertical rod and upper insert
The caliber of pipe is respectively 60mm, 48mm, or respectively 80mm, 60mm.
8. the post-cast strip adjustable steel support system as described in claim 1-7 is any, it is characterised in that apart from post-cast strip edge away from
From for 100mm-200mm；It is 1100mm-1300mm along the direction spacing of post-cast strip.
9. the application method of the post-cast strip adjustable steel support system as described in claim 1-7 is any, it is characterised in that post-cast strip
During first time formwork, the vertical supporting of plank sheathing support system is installed, the support panel directly connects with concrete to be poured
Touch, casting concrete removes plank sheathing support system after concrete reaches intensity, indwelling post-cast strip adjustable steel support system after
Continuous carrying；During second of the formwork in post-cast strip, plank sheathing support system is installed, it is to be poured to pour concrete at post-cast strip
Concrete reaches intensity and after the solidifying phase, removes and post-cast strip adjustable steel support system.
10. the application method of adjustable steel support system in post-cast strip as claimed in claim 9, it is characterised in that by selecting
State the radius of gyration of vertical rod or by setting up the stability that the method for the cross bar maintains the vertical rod to adjust height.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710458580.2A CN107227842A (en) | 2017-06-16 | 2017-06-16 | Post-cast strip adjustable steel support system and application method |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710458580.2A CN107227842A (en) | 2017-06-16 | 2017-06-16 | Post-cast strip adjustable steel support system and application method |
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| Publication Number | Publication Date |
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| CN107227842A true CN107227842A (en) | 2017-10-03 |
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ID=59935440
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
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| CN201710458580.2A Pending CN107227842A (en) | 2017-06-16 | 2017-06-16 | Post-cast strip adjustable steel support system and application method |
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Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110439270A (en) * | 2019-08-08 | 2019-11-12 | 上海宝冶集团南京建筑有限公司 | A kind of post-cast strip exempts to tear support system construction method open |
| CN112609980A (en) * | 2020-12-18 | 2021-04-06 | 中国建筑第四工程局有限公司 | Construction method of post-cast strip back-jacking aluminum alloy single-column |
| CN113482394A (en) * | 2021-08-06 | 2021-10-08 | 中建三局集团(深圳)有限公司 | Structural beam plate back-jacking reinforcing method |
| CN113897970A (en) * | 2021-03-05 | 2022-01-07 | 华润建筑有限公司 | Temporary steel support structure for deep foundation pit construction and construction method thereof |
| CN115110646A (en) * | 2022-07-01 | 2022-09-27 | 广东正升建筑有限公司 | Post-cast strip construction process |
| CN115217328A (en) * | 2022-07-26 | 2022-10-21 | 中国建筑第二工程局有限公司 | Supporting system capable of being used in turnover mode at periphery of post-cast strip and construction method of supporting system |
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| JPH0842163A (en) * | 1994-08-01 | 1996-02-13 | Mitsuo Sasaki | Support |
| CN201495772U (en) * | 2009-03-13 | 2010-06-02 | 南通建筑工程总承包有限公司 | Post-poured band formwork supporting device |
| CN204402069U (en) * | 2014-12-22 | 2015-06-17 | 中建八局第三建设有限公司 | A kind of ater-casting Zhi Dingyong bracing or strutting arrangement |
| CN106368245A (en) * | 2015-07-23 | 2017-02-01 | 浙江国泰建设集团有限公司 | Construction method for post-cast strip supporting formwork easy to clean |
| CN106760496A (en) * | 2016-12-21 | 2017-05-31 | 中国建筑第四工程局有限公司 | A kind of floor beam plate post-cast strip template support system and its construction method |
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| JPH0842163A (en) * | 1994-08-01 | 1996-02-13 | Mitsuo Sasaki | Support |
| CN201495772U (en) * | 2009-03-13 | 2010-06-02 | 南通建筑工程总承包有限公司 | Post-poured band formwork supporting device |
| CN204402069U (en) * | 2014-12-22 | 2015-06-17 | 中建八局第三建设有限公司 | A kind of ater-casting Zhi Dingyong bracing or strutting arrangement |
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Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110439270A (en) * | 2019-08-08 | 2019-11-12 | 上海宝冶集团南京建筑有限公司 | A kind of post-cast strip exempts to tear support system construction method open |
| CN112609980A (en) * | 2020-12-18 | 2021-04-06 | 中国建筑第四工程局有限公司 | Construction method of post-cast strip back-jacking aluminum alloy single-column |
| CN113897970A (en) * | 2021-03-05 | 2022-01-07 | 华润建筑有限公司 | Temporary steel support structure for deep foundation pit construction and construction method thereof |
| CN113482394A (en) * | 2021-08-06 | 2021-10-08 | 中建三局集团(深圳)有限公司 | Structural beam plate back-jacking reinforcing method |
| CN115110646A (en) * | 2022-07-01 | 2022-09-27 | 广东正升建筑有限公司 | Post-cast strip construction process |
| CN115217328A (en) * | 2022-07-26 | 2022-10-21 | 中国建筑第二工程局有限公司 | Supporting system capable of being used in turnover mode at periphery of post-cast strip and construction method of supporting system |
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Application publication date: 20171003 |