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CN109930727A - A kind of buckle-type exempts from demoulding floor - Google Patents

A kind of buckle-type exempts from demoulding floor Download PDF

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Publication number
CN109930727A
CN109930727A CN201910316193.4A CN201910316193A CN109930727A CN 109930727 A CN109930727 A CN 109930727A CN 201910316193 A CN201910316193 A CN 201910316193A CN 109930727 A CN109930727 A CN 109930727A
Authority
CN
China
Prior art keywords
dismantling formwork
buckle
demoulding
floor
steel column
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.)
Pending
Application number
CN201910316193.4A
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Chinese (zh)
Inventor
李国雄
谷伟平
何小菱
黄英孺
李小波
罗玮聪
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Guangzhou Luban Building Science And Technology Group Ltd By Share Ltd
Original Assignee
Guangzhou Luban Building Science And Technology Group Ltd By Share Ltd
Priority date (The priority date 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 date listed.)
Filing date
Publication date
Application filed by Guangzhou Luban Building Science And Technology Group Ltd By Share Ltd filed Critical Guangzhou Luban Building Science And Technology Group Ltd By Share Ltd
Priority to CN201910316193.4A priority Critical patent/CN109930727A/en
Publication of CN109930727A publication Critical patent/CN109930727A/en
Pending legal-status Critical Current

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Abstract

The invention discloses a kind of buckle-types to exempt from demoulding floor, the demoulding floor of exempting from includes non-dismantling formwork, steel wire, light steel column and steel tie rod, the side of the non-dismantling formwork is smooth flat, the other side is equipped with several pre-buried a few shape parts and several T-type buttons, the four edges of the non-dismantling formwork are equipped with several male connector slots and female slot, the steel wire is equipped with several hanging buckles, and light steel column is equipped with several T-slots, is fixedly connected between pre-buried a few shape parts and steel wire by the first snap;It is fixedly connected between the bottom surface and non-dismantling formwork of the light steel column by the second snap;It is fixedly connected between the non-dismantling formwork and non-dismantling formwork by third snap, makes non-dismantling formwork Fast Installation on light steel column by the connection of the first buckle, the second buckle and third buckle.The advantages of present invention not only has installation speed fast, and installation is stronger, greatly shortens construction period, and shorten floor slab construction step, it is suitable for a wide range of promote and apply.

Description

A kind of buckle-type exempts from demoulding floor
Technical field
The present invention relates to one kind to exempt from demoulding floor, exempts from demoulding floor more particularly, to a kind of buckle-type.
Background technique
Currently, the tradition that still largely uses of construction industry, which dissipates, spells bamboo glue pattern plate, not only handy a large amount of timber resources, Er Qiean Except time-consuming and laborious, turnover becomes building waste using after repeatedly for installation and dismantling.Currently, assembled architecture is carried out energetically by country, Its building being assembled by pre-constructed unit in building site, assembled architecture have speed of application fast, construct environmentally protective, section About labour the advantages that;But assembled architecture exists during installation needs large scale hoisting machinery, building node more, can not The disadvantages of long-distance transportation.Therefore, a kind of new technology --- non-dismantling formwork technology is come into being, because it is simple with supporting, letter Change construction technology, be not necessarily to demoulding and plastering, the material for needing to have enough to meet the need is few, saves falsework, and construction period greatly shortens, and builds The advantages that rubbish is few, good thermal insulation property pushes the development of whole building industry industrialized building technique.But in the prior art Non-dismantling formwork be mostly using fibre cement plate or calcium silicate board with microporous as non-dismantling formwork, only used when assembling floor at the scene two-way Groove carries out assembled non-dismantling formwork, and is supported with angle steel, is consolidated by the way of binding between non-dismantling formwork and angle steel Fixed, not only time-consuming and laborious but also installation is insecure, influences construction quality.
One two layers of public building of building is generally only applicable to using above-mentioned form of construction work.Therefore exempt from demoulding floor in construction When, how non-dismantling formwork is accomplished to realize Fast Installation at the construction field (site), further speeds up construction speed, solution template Rigidity problem on deformation, increase application range, install it is more simple, secured while can guarantee that construction safety is that this case is wanted again It solves the problems, such as.
Summary of the invention
It is an object of the present invention to provide a kind of buckle-types to exempt from demoulding floor, not only has Fast Installation, peace for floor construction It fills stronger, the advantages of greatly shortening construction period, improve construction efficiency, and shortens floor construction step, be suitable for big Range promotes and applies.
To achieve the above object, the technical scheme adopted by the invention is that:
A kind of buckle-type exempts from demoulding floor, and the demoulding floor of exempting from includes that non-dismantling formwork, steel wire, light steel column and steel are drawn Item, the side of the non-dismantling formwork are smooth flat, and the other side is equipped with several pre-buried a few shape parts and several T-type buttons, described to exempt to tear open The four edges of template are equipped with several male connector slots and female slot, and the steel wire is equipped with several hanging buckles, sets on light steel column There are several T-slots, is fixedly connected between pre-buried a few shape parts and steel wire by the first snap;The light steel column Bottom surface and non-dismantling formwork between be fixedly connected by the second snap;By the between the non-dismantling formwork and non-dismantling formwork Three snaps are fixedly connected, by first buckle, second buckle and third buckle connection make non-dismantling formwork Fast Installation in On light steel column.
Further, the non-dismantling formwork length be 0.2m~1.2m, height 0.4m~1.5m, thickness 15mm~25mm, When carrying out non-dismantling formwork splicing at the scene, the wall size built according to the actual needs of the site splices and combines non-dismantling formwork It forms.
Further, two opposite sides in the non-dismantling formwork four edges, a line are male connector slot, and another is female Slot.
Further, the multiple that the number of T-type button is 2 on the non-dismantling formwork, preferably 4 in the present embodiment.
Further, pre-buried a few shape part numbers use formula: pre-buried a few shape part numbers=[exempt from demoulding on the non-dismantling formwork Plate length (m)/0.3] × [non-dismantling formwork height (m)/0.3] carry out be rounded be calculated.
Further, the non-dismantling formwork is by concrete, steel mesh, traction-resistant fibre, pre-buried a few shape parts, T-type button, male connector slot It is formed with female slot.
Further, the traction-resistant fibre material is polypropylene fibre, glass fibre, polypropene staple, polyester fiber In any one.
Further, the concrete in the non-dismantling formwork is one of armored concrete, polymer concrete.
Further, the material of the light steel column is carbon steel, fashioned iron, any one in metal alloy.
Further, the bottom surface of the light steel column is fixedly connected with non-dismantling formwork, and another side is not connected to non-dismantling formwork, Purpose is when pouring directly by concreting on non-dismantling formwork.
Further, the light steel column and non-dismantling formwork joint face are equipped with 4 T-slots, position and non-dismantling formwork On T-type button bit set corresponding, another side does not set T-slot;It is fixed between light steel column and light steel column by steel tie rod Connection.
Further, the distance between the light steel column and light steel column are less than 60cm.
Further, the light steel column includes the light steel of four rectangles and quick connector.
Further, it is fixed between the light steel of the adjacent rectangle by quick connector.
Further, the upper and lower part of the light steel of the adjacent rectangle is respectively equipped with a quick connector, for increasing Stability.
Further, the non-dismantling formwork top pours packing material, and the packing material poured is normal concrete, hair Steep concrete, any one in foam concrete.
Further, first snap is to pass through between one end and steel wire of hanging buckle and be welded and fixed, the other end Steel wire is fixed on non-dismantling formwork by snap with pre-buried a few shape parts.
Further, second snap is the T-slot reserved on the T-type button on non-dismantling formwork and light steel column Non-dismantling formwork is fixed on light steel column by snap.
Further, the third snap is, the male connector slot on one piece of non-dismantling formwork on another piece of face form removal Female slot snapped connection by way of tongue and groove two pieces of non-dismantling formworks be fixed together.
The present invention compared with the existing technology the advantages of be:
(1) T-slot reserved on the T-type button and light steel column being arranged on non-dismantling formwork passes through snap for non-dismantling formwork It is fixed on light steel column, realizes Fast Installation;(2) by the way that pre-buried a few shape parts are arranged in the other side of non-dismantling formwork, and pass through Steel wire is snapped on non-dismantling formwork by hanging buckle, increase when pouring fill concrete on non-dismantling formwork concrete to non-dismantling formwork Acting surface, improve the non-dismantling formwork service life, solve the rigidity problem on deformation of template;(3) by the four edges of non-dismantling formwork Male connector slot and female slot are set, make to connect more secured, solution plate gap problem between non-dismantling formwork and non-dismantling formwork;(4) Traction-resistant fibre, concrete in non-dismantling formwork and the concrete material type poured in non-dismantling formwork top can use multiple material It is made, raw material sources are wide, and the scope of application is strong;(5) it is installed at the scene by snap so that installation speed is fast Speed, it is convenient, it can greatly shorten the construction period, improve operating efficiency, be suitable for a wide range of promote.
Detailed description of the invention
Fig. 1 is the structural schematic diagram that a kind of buckle-type of the present invention exempts from demoulding floor;
Fig. 2 is the top view that a kind of buckle-type of the present invention exempts from demoulding floor;
Fig. 3 is that monolithic non-dismantling formwork is snapped in the structure chart on light steel column in Fig. 1;
Fig. 4 is that steel wire is snapped in the structural schematic diagram on monolithic non-dismantling formwork in Fig. 3;
Fig. 5 is the structural schematic diagram of non-dismantling formwork in Fig. 3;
Fig. 6 is the top view of Fig. 5;
Fig. 7 is the structural schematic diagram of steel wire in Fig. 4;
Fig. 8 is the structural schematic diagram of hanging buckle in Fig. 7;
Fig. 9 is the structural schematic diagram that a kind of buckle-type of the present invention exempts from light steel column in demoulding floor;
Figure 10 is that a kind of the first embodiment that buckle-type exempts to connect between light steel column in demoulding floor of the present invention is shown It is intended to;
Figure 11 is that a kind of buckle-type of the present invention exempts from second of the embodiment connected between light steel column in demoulding floor Schematic diagram;
Figure 12 is that a kind of buckle-type of the present invention exempts from the third embodiment connected between light steel column in demoulding floor Schematic diagram;
Figure 13 is that a kind of buckle-type of the present invention exempts from the 4th kind of embodiment connected between light steel column in demoulding floor Schematic diagram;
Figure 14 is the structural schematic diagram of pre-buried the first embodiment of a few shape parts in Fig. 5 non-dismantling formwork;
Figure 15 is the structural schematic diagram of pre-buried a few second of embodiment of shape part in Fig. 5 non-dismantling formwork;
Figure 16 is the structural schematic diagram of pre-buried the third embodiment of a few shape parts in Fig. 5 non-dismantling formwork;
Figure 17 be a kind of buckle-type of the present invention exempt from male connector slot and female slot in demoulding floor formed male and female feather joint the first Embodiment schematic diagram;
Figure 18 is that a kind of buckle-type of the present invention is exempted from male connector slot and female slot in demoulding floor and formed second of male and female feather joint Embodiment schematic diagram.
In figure: 1. non-dismantling formworks, 2. light steel columns, 3. steel wires, 4. quick connectors, 5. steel tie rods, the light steel of 6. rectangles, 7. male connector slot, 8.T type is buckled, 9. hanging buckles, 10. pre-buried a few shape parts, 11. female slots, 12. steel wires, 13.T type groove.
Specific embodiment
The present invention will be further described with reference to the accompanying drawing.
As shown in Figs 1-4, the invention discloses a kind of buckle-types to exempt from demoulding floor, and the demoulding floor of exempting from includes exempting from demoulding Plate 1, steel wire 3, light steel column 2 and steel tie rod 5, the side of the non-dismantling formwork 1 are smooth flat, are intervened if the other side is equipped with A few shape parts 10 and several T-type buttons 8 are buried, the four edges of the non-dismantling formwork 1 are equipped with several male connector slots 7 and female slot 11, described Steel wire is equipped with several hanging buckles 9, and light steel column 2 is equipped with several T-slots 13, pre-buried a few shape parts 10 and steel wire It is fixedly connected between 3 by the first snap;Pass through the second buckle side between 2 bottom surface of light steel column and non-dismantling formwork 1 Formula is fixedly connected;It is fixedly connected between the non-dismantling formwork 1 and non-dismantling formwork 1 by third snap, buckled by first, The connection of second buckle and third buckle makes 1 Fast Installation of non-dismantling formwork on light steel column 2.
First snap are as follows: by being welded and fixed between one end and steel wire 3 of hanging buckle 9, the other end with it is pre-buried Steel wire 3 is fixed on non-dismantling formwork 1 by a few shape parts 10 by snap, and the purpose is to increase to pour on non-dismantling formwork 1 Concrete reduces the stress of non-dismantling formwork to the acting surface of non-dismantling formwork 1 when concrete, improves the non-dismantling formwork service life, and then solves The certainly rigidity problem on deformation of template.
Second snap are as follows: the T-slot 13 reserved on the T-type button 8 and light steel column on non-dismantling formwork 1 passes through card Non-dismantling formwork 1 is fixed on the bottom surface of light steel column by button mode, can securely be blocked non-dismantling formwork 1 by this kind of T-type button mode It is buckled on the light steel column 11 in connection framework, greatly improves installation speed.
The third snap are as follows: the male connector slot 7 on one piece of non-dismantling formwork 1 and the female on another piece of face form removal 1 Slot 11 is snapped connection by way of tongue and groove is fixed together two pieces of non-dismantling formworks 1, and the purpose is to make non-dismantling formwork 1 What is connected between non-dismantling formwork 1 is more secured, solves plate gap problem.
In order to the clearer understanding present invention, carried out with the rectangle non-dismantling formwork 1 with a thickness of 20mm, long 1.2m wide 1m Site operation is illustrated for embodiment.The construction process of the present invention at the scene are as follows: when non-dismantling formwork 1 is transported to construction site, When being installed;Male connector slot 7 and the mother that will be utilized between muti-piece non-dismantling formwork 1 and non-dismantling formwork 1 on its four edges first Head slot 11 is fixed by way of tongue and groove, then by pre-buried several shapes on the hanging buckle 9 and non-dismantling formwork 1 on steel wire 3 10 position of part corresponds, and makes hanging buckle 9 and the perpendicular position of pre-buried a few shape parts 10;Then firmly by steel wire toward non-dismantling formwork side To pushing away, it is snapped in pre-buried a few shape parts 10 on non-dismantling formwork 1 in the hanging buckle 9 of steel wire 3.Then steel wire 3 and demoulding will be exempted from Plate 1 is directed at the T-slot 13 reserved on light steel column by the T-type button 8 on non-dismantling formwork 1 together, by non-dismantling formwork 1 and steel wire 3 are snapped in the bottom surface of light steel column 2, to realize 1 Fast Installation of non-dismantling formwork.Then by preprepared concreting On non-dismantling formwork, entirely installing casting process after concrete setting terminates.
As viewed in figures 5-8,16 pre-buried 10,4 T-type buttons 8 of a few shape parts are equipped in the present embodiment on non-dismantling formwork 1 altogether, on While and right while be male connector slot 7, lower while and left while be female slot 11;One end of hanging buckle 9 is welded on steel wire 3, separately One end is used to buckle pre-buried a few shape parts 10 on non-dismantling formwork 1.8 height of T-type button is higher than pre-buried 10 height of a few shape parts, the purpose is to T-type button 8 is set to be snapped on light steel column.
As shown in figure 9, the light steel column 2 includes light steel 6 and 8 quick connector 4 of 4 rectangles, described 4 quickly connect Light 6 top of steel of rectangle is fixedly connected by fitting 4 between any two, and light 6 lower part of steel of rectangle is carried out two by 4 Quick connection parts 4 It is fixedly connected between two, for increasing stability;The light steel 10 of two rectangles towards bottom surface is equipped with 4 T-slots 13, this 4 A T-slot 13 facilitates the buckle of non-dismantling formwork 1 the purpose is to corresponding with the T-type button 8 on non-dismantling formwork 1 in each 2 distributions up and down In on the light steel of rectangle.
As shown in figures 10-13, it is fixedly connected, is schemed by steel tie rod 5 between the light steel column 2 and light steel column 2 In be four kinds of connected mode schematic diagrams being fixedly connected between light steel column 2 and light steel column 2 by steel tie rod 5.It is described The first connection type is that two steel tie rods 5 and light steel column 2 form triangle, increases stability.Second of connection side Formula is that two steel tie rods 5 form X-shaped, increases stability.The third described connection type is that four steel tie rods 5 form ∑ shape, is increased Add stability.The 4th kind of connection type is that three steel tie rods 5 form zigzag, increases stability.
As illustrated in figures 14-16, pre-buried a few shape parts 10 are to be embedded in non-dismantling formwork 1, are pre-buried a few shape parts 10 in figure Three kinds of embodiment schematic diagrams, the middle part of the first embodiment is isosceles trapezoid, and two trapezoidal base angles are 45 °;The The middle part of two kinds of embodiments is rectangle, is square in the middle part of the third embodiment, and the purpose is to facilitate hanging buckle 7 to buckle Increase the concrete poured simultaneously to the acting surface of non-dismantling formwork 1, reduces concrete to the active force of non-dismantling formwork 1, solve mould The rigidity problem on deformation of plate.
As shown in figs. 17-18, two pieces of non-dismantling formworks 1 are exempted from by male connector slot 7 on one piece of non-dismantling formwork and another piece It is connected by way of tongue and groove between female slot 11 on form removal 1, connection type is as shown in the figure.The first male and female in figure Tenon embodiment is that trapezoidal design is used in female slot 11, and second of tongue and groove embodiment is that semi arch is used in female slot 11 Groove design, two kinds of design methods can make to install between non-dismantling formwork 1 and non-dismantling formwork 1 stronger.
The present invention is quickly pacified non-dismantling formwork by the first snap of setting, the second snap and third snap Bottom surface loaded on light steel column is able to achieve Fast Installation in work progress at the scene, greatly shortens construction period, improves construction effect Rate is suitable for a wide range of promotes and applies.
The above embodiments are merely illustrative of the technical solutions of the present invention, rather than its limitations;Although implementing referring to aforementioned Invention is explained in detail for example, those skilled in the art should understand that: it still can be to aforementioned implementation Technical solution documented by example is modified, or equivalent substitution of some or all of the technical features;And these It modifies or replaces, the range for technical solution of the embodiment of the present invention that it does not separate the essence of the corresponding technical solution should all be contained Lid is within the scope of the claims and the description of the invention.

Claims (10)

1. a kind of buckle-type exempts from demoulding floor, it is characterised in that: the demoulding floor of exempting from includes non-dismantling formwork, steel wire, light steel Column and steel tie rod, the side of the non-dismantling formwork are smooth flat, and the other side is equipped with several pre-buried a few shape parts and several T-types Button, the four edges of the non-dismantling formwork are equipped with several male connector slots and female slot, and the steel wire is equipped with several hanging buckles, gently Steel column is equipped with several T-slots, is fixedly connected between pre-buried a few shape parts and steel wire by the first snap;
It is fixedly connected between the bottom surface and non-dismantling formwork of the light steel column by the second snap;The non-dismantling formwork with exempt from It is fixedly connected between form removal by third snap, makes to exempt from by the connection of the first buckle, the second buckle and third buckle Form removal Fast Installation is on light steel column.
2. a kind of buckle-type according to claim 1 exempts from demoulding floor, it is characterised in that: in the non-dismantling formwork four edges Two opposite sides, a line are male connector slot, and another is female slot.
3. a kind of buckle-type according to claim 2 exempts from demoulding floor, it is characterised in that: the non-dismantling formwork is by coagulation Soil, steel mesh, traction-resistant fibre, pre-buried a few shape parts, T-type button, male connector slot and female slot composition.
4. a kind of buckle-type according to claim 3 exempts from demoulding floor, it is characterised in that: the traction-resistant fibre material is poly- Tacryl, glass fibre, polypropene staple, any one in polyester fiber.
5. a kind of buckle-type according to claim 1 exempts from demoulding floor, it is characterised in that: the material of the light steel column is Carbon steel, fashioned iron, any one in metal alloy.
6. a kind of buckle-type according to claim 5 exempts from demoulding floor, it is characterised in that: the light steel column and exempt from demoulding Plate joint face is equipped with 4 T-slots, is fixedly connected between light steel column and light steel column by steel tie rod.
7. a kind of buckle-type according to claim 6 exempts from demoulding floor, it is characterised in that: the non-dismantling formwork top pours Packing material, the packing material poured are normal concrete, foamed concrete, any one in foam concrete.
8. a kind of buckle-type according to claim 1 exempts from demoulding floor, it is characterised in that: first snap is, By being welded and fixed between one end and steel wire of hanging buckle, the other end is fixed steel wire by snap with pre-buried a few shape parts In on non-dismantling formwork.
9. a kind of buckle-type according to claim 1 exempts from demoulding floor, it is characterised in that: second snap is, Non-dismantling formwork is fixed on light steel column by snap by the T-slot reserved on the T-type button and light steel column on non-dismantling formwork On.
10. a kind of buckle-type according to claim 1 exempts from demoulding floor, it is characterised in that: the third snap is, Male connector slot on one piece of non-dismantling formwork is snapped connection by way of tongue and groove with the female slot on another piece of face form removal Two pieces of non-dismantling formworks are fixed together.
CN201910316193.4A 2019-04-19 2019-04-19 A kind of buckle-type exempts from demoulding floor Pending CN109930727A (en)

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Application Number Priority Date Filing Date Title
CN201910316193.4A CN109930727A (en) 2019-04-19 2019-04-19 A kind of buckle-type exempts from demoulding floor

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Application Number Priority Date Filing Date Title
CN201910316193.4A CN109930727A (en) 2019-04-19 2019-04-19 A kind of buckle-type exempts from demoulding floor

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Cited By (3)

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Publication number Priority date Publication date Assignee Title
CN111851830A (en) * 2020-06-30 2020-10-30 天津竟盛新型建材有限公司 Assembled disassembly-free formwork and method of making the same
CN113605443A (en) * 2021-07-26 2021-11-05 北京城建集团有限责任公司 High-low span concrete bottom plate construction structure and method thereof
CN115506579A (en) * 2022-10-12 2022-12-23 中建八局第二建设有限公司 Integrated formwork for middle support of adjacent walls and working method

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CA2257085A1 (en) * 1998-12-17 2000-06-17 Gary Woolgar One-sided insulated formwork
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CN102031755A (en) * 2010-11-26 2011-04-27 哈尔滨工程大学 Multifunctional permanent template for girder bridge gravity type pier
CN204781524U (en) * 2015-07-15 2015-11-18 长沙怡景建材科技有限公司 Sulphur oxygen magnesium steel bar truss board
CN106436989A (en) * 2016-10-24 2017-02-22 辽宁金帝建筑设计有限公司 Non-dismantling template for building wall body casting and preparing method thereof
CN210238898U (en) * 2019-04-19 2020-04-03 广州市鲁班建筑科技集团股份有限公司 Buckle formula exempts from to tear open form floor

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Publication number Priority date Publication date Assignee Title
CA2257085A1 (en) * 1998-12-17 2000-06-17 Gary Woolgar One-sided insulated formwork
KR20070053409A (en) * 2005-11-21 2007-05-25 오승탁 Precast concrete panel and method for construction of bridge slab cantilever part without beam
CN2926365Y (en) * 2006-07-28 2007-07-25 范永光 Embedded brick with built-in fitting and externally thermal-insulating structure of external wall
WO2010145642A2 (en) * 2009-06-16 2010-12-23 Bvb Gmbh Permanent formwork
CN102031755A (en) * 2010-11-26 2011-04-27 哈尔滨工程大学 Multifunctional permanent template for girder bridge gravity type pier
CN204781524U (en) * 2015-07-15 2015-11-18 长沙怡景建材科技有限公司 Sulphur oxygen magnesium steel bar truss board
CN106436989A (en) * 2016-10-24 2017-02-22 辽宁金帝建筑设计有限公司 Non-dismantling template for building wall body casting and preparing method thereof
CN210238898U (en) * 2019-04-19 2020-04-03 广州市鲁班建筑科技集团股份有限公司 Buckle formula exempts from to tear open form floor

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN111851830A (en) * 2020-06-30 2020-10-30 天津竟盛新型建材有限公司 Assembled disassembly-free formwork and method of making the same
CN113605443A (en) * 2021-07-26 2021-11-05 北京城建集团有限责任公司 High-low span concrete bottom plate construction structure and method thereof
CN113605443B (en) * 2021-07-26 2023-02-24 北京城建集团有限责任公司 High-low span concrete bottom plate construction structure and method thereof
CN115506579A (en) * 2022-10-12 2022-12-23 中建八局第二建设有限公司 Integrated formwork for middle support of adjacent walls and working method

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Application publication date: 20190625