CN103452217B - A kind of precast lattice beam and preparation method thereof - Google Patents
A kind of precast lattice beam and preparation method thereof Download PDFInfo
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- CN103452217B CN103452217B CN201310391353.4A CN201310391353A CN103452217B CN 103452217 B CN103452217 B CN 103452217B CN 201310391353 A CN201310391353 A CN 201310391353A CN 103452217 B CN103452217 B CN 103452217B
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Abstract
A kind of precast lattice beam and preparation method thereof, described precast lattice beam comprises the latticed beam body intersected by crossbeam and longeron coordination of reinforced concrete structure, four limits of beam body are equipped with the link bolt hole be connected with adjacent precast lattice beam, four angles of beam body are equipped with the vertical cut (V. cut) of building non-shrinkage cement mortar, in vertical cut (V. cut), are provided with pre-buried connecting reinforcement.The scale that described precast lattice beam has, standardized feature, significantly can reduce traditional cast-in-place lattice girder and the problem that difficulty of construction is large, production efficiency is low, quality is unstable, resource consumption is large that causes of adopting; The construction that have employed the electronic workshop of precast lattice beam decreases recruitment quantity, reduces the consumption of energy resources, improves labor productivity, have the social benefit of highly significant.
Description
Technical field
The present invention relates to a kind of lattice girder be applied in electronic factory building, and the preparation method of this lattice girder.
Background technology
At present, the mode of construction of electronic factory building normally adopts the concrete mode of field cast-in-place to complete construction, for completing the construction of factory building fast, usually need in work progress to drop into a large amount of manpower and materials, easily the construction of each electronic workshop the template flitch of the operating personnel of thousands of meter, the steel pipe frame material of tens thousand of tons and tens thousand of square meter will be dropped into, so will consume great social resources.And meanwhile, the cycle of founding the factory of electronic workshop is shorter, so the low turnover of a large amount of wastings of resources, particularly wooden form can be caused to use, cause a large amount of lumber consumptions.The in-depth gradually of this phenomenon therefore along with the in short supply of builing industry rural migrant worker and under quality, adopts the mode of traditional cast-in-situ concrete to build electronic factory building, become very uneconomical, and quality is also difficult to obtain guarantee.
Industrialization of construction industry starts starting from the seventies in last century, building the large quantities of engineerings applying prefabricating technique at that time, but a large amount of rural migrant worker pours in city along with the later stage eighties, make to rely on the prefabricated industry of professional technique workman to be subject to great impact, the industrialization of construction industry pattern representing builing industry future thrust is lost gradually, and the development of prefabricating technique has also been absorbed in predicament and has declined gradually.
Recent years, along with the needs of expanding economy and builing industry industrial upgrading, equally along with the disappearance gradually supporting the cheap rural migrant worker of traditional architecture industry, adopt the development of the industrialization of construction industry pattern of precast concrete fabricated construction pattern by again becoming possibility, particularly along with the development of housing industrialization, precast concrete technology has started accumulation and development gradually, the construction theory of this advanced person is introduced there is scale, the electronic workshop construction applications of standardization industrialization feature also will become a kind of inevitable, so study a kind of novel factory normalization to produce, the electronic workshop construction method with industrialization of construction industry feature of site assemblyization construction just becomes a kind of inevitable.
The production core space of electronic factory building, usually be made up of cancellate beam (i.e. latticed cast-in-place lattice girder), because the adjacent lattice spacing of cancellate beam is very little, beam section is larger, this just makes cancellate girder construction adopt traditional cast-in-place mode by difficulty very, and will consume a large amount of manpower and materials time cast-in-place.How the lattice girder structure of producing core space is carried out modular decomposition, carry out the production (utilizing the features such as the plant produced mould number of turnover is many, energy resource waste is few to complete the production of precast lattice beam) of batch production, and then scene carry out assembling construction (lattice girder being decomposed into monolithic is installed, and adopt appropriate connected node mode to make the lattice girder of each monolithic be linked to be entirety), now become a urgent problem.
Summary of the invention
The object of this invention is to provide a kind of precast lattice beam and preparation method thereof, the lattice girder speed of application that solve the cast-in-place mode of the production core space of electronic factory building is slow, serious waste of resources, economy are low and the technical problem of quality instability.
For achieving the above object, the present invention adopts following technical scheme: a kind of precast lattice beam, comprise the latticed beam body intersected by crossbeam and longeron coordination of reinforced concrete structure, it is characterized in that: four limits of beam body are equipped with the link bolt hole be connected with adjacent precast lattice beam, four angles of beam body are equipped with the vertical cut (V. cut) of building non-shrinkage cement mortar, in vertical cut (V. cut), are provided with pre-buried connecting reinforcement.
Described pre-buried connecting reinforcement and can be buried iron connecting reinforcement in advance and forms by pre-buried upper iron connecting reinforcement.
Vertically direction, described vertical cut (V. cut) can be divided into the large breach in top and middle and lower part small gap two sections, and described pre-buried upper iron connecting reinforcement is arranged in the large breach in top, and described iron connecting reinforcement of burying in advance is arranged in the small gap of middle and lower part.
Described pre-buried upper iron connecting reinforcement can by longitudinally pre-buried upper iron connecting reinforcement and horizontal pre-buried upper iron connecting reinforcement form.
Described iron connecting reinforcement of burying in advance can form by longitudinally burying iron connecting reinforcement in advance and laterally burying iron connecting reinforcement in advance.
Vertically direction, described link bolt hole can be arranged on the top of beam body.
The upper surface of described beam body can be embedded with precast lattice beam Heave Here.
Described precast lattice beam Heave Here can be embedded in the crossbeam of beam body and the connected node place of longeron.
A preparation method for precast lattice beam, is characterized in that step is as follows: step one, in factory, colligation lattice girder reinforcing cage; Step 2, in factory, being hung in by lattice girder reinforcing cage good for colligation builds in the mould of precast lattice beam, and the mould of building precast lattice beam comprises the bed die be placed on pedestal, bolt is connected to the detachable core die on bed die and detachably side form and bolt are connected to the removable top on detachable core die; Step 3, in factory, correct and build the mould of precast lattice beam; Step 4, in factory, build lattice girder concrete, and adopt the mode of overall maintenance to complete concrete curing; Step 5, in factory, form removal.
In described step 5, the concrete steps of form removal are first removed by detachable side form, then detachable core die set bolt is unclamped, precast lattice beam is together lifted by crane together with detachable core die and leaves pedestal, then adopt the power mode of knocking to knock detachable core die, detachable core die gets final product self falling.
Compared with prior art the present invention has following characteristics and beneficial effect: the precast lattice beam in the present invention has scale, standardized feature, is a kind of precast lattice beam cast-in-situ concrete lattice girder floor of the production core space of traditional electronic factory building installation span being split as normal size.
Precast lattice beam in the present invention utilizes factory to manufacture out fast, after having produced after the assembly connection of job site, becomes the assembly concrete lattice girder floor identical with cast-in-place concrete structure.
Precast lattice beam in the present invention by factorial praluction, significantly can reduce and adopt traditional cast-in-place lattice girder and the problem that difficulty of construction is large, production efficiency is low, quality is unstable, resource consumption is large that causes.
The construction that have employed the electronic workshop of precast lattice beam of the present invention takes full advantage of that the less investment of plant produced prefabricated units, speed are fast, the measured advantage of matter, also use that site assembly prefabricated units speed is fast, artificial less, the measured feature of matter, so significantly improve the speed of founding the factory, also utilize industrialized advantage simultaneously, decrease recruitment quantity, reduce energy consumption, improve labor productivity, there is the social benefit of highly significant.
The lattice girder structure that core space produced by electronic factory building is carried out modular decomposition by the present invention, each precast lattice beam all just completes in plant produced in advance before construction, and then the assembling construction (precast lattice beam of the monolithic that is namely prefabricated in the factory is carried out at the scene that is transported to, then be transported to job site and carry out in-site installation, and adopt appropriate connected node mode to make the precast lattice beam of each piecemeal be linked to be lattice girder monoblock), not only increase manufacture like this, the efficiency of assembling, and save manpower and construction cost, solve traditional cast-in-place lattice girder personnel amount many, template and scaffold drop into huge problem.
Precast lattice beam in the present invention is formed by the Mold Making of building precast lattice beam, the mould of building precast lattice beam comprises the bed die be placed on pedestal, bolt is connected to the detachable core die on bed die and detachably side form and bolt are connected to the removable top on detachable core die, by the mode of detachable core die, improve the mould number of turnover, reduce the resource input of plant produced.
Accompanying drawing explanation
Below in conjunction with accompanying drawing, the present invention will be further described in detail.
Fig. 1 is the plan structure schematic diagram of precast lattice beam embodiment one.
Fig. 2 is the elevational schematic view of Fig. 1.
Fig. 3 is the plan structure schematic diagram of precast lattice beam embodiment two.
Fig. 4 is the elevational schematic view of Fig. 3.
Fig. 5 is the main TV structure schematic diagram of the mould manufacturing precast lattice beam embodiment one.
Fig. 6 is the main TV structure schematic diagram of the mould manufacturing precast lattice beam embodiment dual-purpose.
Fig. 7 is that precast lattice beam takes the schematic top plan view be placed in prefabricated post.
Fig. 8 is the schematic top plan view at the connected node place of precast lattice beam and prefabricated post.
Fig. 9 is the elevational schematic view at the connected node place of precast lattice beam and prefabricated post.
Reference numeral: 1-link bolt hole, 2-breach, the large breach in 2.1-top, 2.2-middle and lower part small gap, 3-is pre-buried upper iron connecting reinforcement longitudinally, 4-is pre-buried upper iron connecting reinforcement laterally, 5-longitudinally buries iron connecting reinforcement in advance, 6-laterally buries iron connecting reinforcement in advance, 7-precast lattice beam Heave Here, 8-beam body, 8.1-crossbeam, 8.2-longeron, 9-prefabricated post, the pre-buried connecting reinforcement of 10-, 11-non-shrinkage cement mortar, 12-branch sleeve, 13-high-strength bolt, 14-pedestal, 15-bed die, 16-detachable core die, the detachable side form of 17-, 18-removable top.
Detailed description of the invention
Embodiment one is see shown in Fig. 1, Fig. 2, and this precast lattice beam, comprises the latticed beam body 8 intersected by crossbeam 8.1 and longeron 8.2 coordination of reinforced concrete structure.Precast lattice beam, according to Structural Design Requirement and technological requirement, is loose structure, and in the present embodiment, precast lattice beam is the lattice girder in 6 holes, and the hole in precast lattice beam is octagonal hole.
See Fig. 1, Fig. 2, Fig. 7-9, four limits of beam body 8 are equipped with to be connected with adjacent precast lattice beam with link bolt hole 1(reservedly connect hole), adjacent precast lattice beam is stitched together by the high-strength bolt 13 be through in link bolt hole 1.In the present embodiment, vertically direction, described link bolt hole 1 are arranged on the top of beam body.
See Fig. 1, Fig. 2, Fig. 7-9, four angles of beam body are equipped with the vertical cut (V. cut) 2 of building non-shrinkage cement mortar 11, the object arranging this vertical cut (V. cut) 2 is to be connected with the top of prefabricated post 9, see Fig. 7-9, the top of described prefabricated post 9 is provided with pre-buried connecting reinforcement 10, the top in prefabricated post is set up at four angles of described precast lattice beam, non-shrinkage cement mortar 11 is perfused with in vertical cut (V. cut) 2 on four angles of precast lattice beam, described pre-buried connecting reinforcement 10 is built with the non-shrinkage cement mortar 11 at vertical cut (V. cut) 2 place be poured in precast lattice beam and is linked together, namely pre-buried connecting reinforcement is used for and waters node after precast lattice beam and be connected.
See Fig. 1, Fig. 2, Fig. 7-9, in vertical cut (V. cut) 2, be provided with pre-buried connecting reinforcement.In the present embodiment, pre-buried connecting reinforcement is by pre-buried upper iron connecting reinforcement and bury iron connecting reinforcement in advance and form.Pre-buried upper iron connecting reinforcement is by longitudinally pre-buried upper iron connecting reinforcement 3 and horizontal pre-buried upper iron connecting reinforcement 4 form.Bury iron connecting reinforcement in advance to form by longitudinally burying iron connecting reinforcement 5 in advance and laterally burying iron connecting reinforcement 6 in advance.
Longitudinally pre-buried upper iron connecting reinforcement 3 and laterally pre-buried upper iron connecting reinforcement 4 all by branch sleeve 12(straight screw sleeve) with the pre-buried upper iron connecting reinforcement 3 of the longitudinal direction in adjacent precast lattice beam and laterally pre-buried upper iron connecting reinforcement 4 link together, longitudinally pre-buried upper iron connecting reinforcement 3, laterally pre-buried upper iron connecting reinforcement 4, branch sleeve 12, longitudinally bury iron connecting reinforcement 5 in advance and horizontal iron connecting reinforcement 6 of burying in advance is also built with the non-shrinkage cement mortar 11 of the indentation, there in precast lattice beam and linked together.The object arranging pre-buried connecting reinforcement is connection in order to strengthen precast lattice beam and non-shrinkage cement mortar 11, precast lattice beam and the connection of contiguous prefabricated lattice girder and the connection of precast lattice beam and prefabricated post 9.
Vertically direction, described vertical cut (V. cut) 2 are divided into the large breach 2.1 in top and middle and lower part small gap 2.2 two sections, and described pre-buried upper iron connecting reinforcement is arranged in the large breach 2.1 in top, and described iron connecting reinforcement of burying in advance is arranged in middle and lower part small gap 2.2.
Pre-buried upper iron connecting reinforcement is that the long filament arranged when plant produced is buckled, before precast lattice beam lifting, by the same branch sleeve 12(reinforced steel bar straight thread coupling sleeve to angular direction) be screwed into, after having lifted, adopt torque spanner oppositely to be back-outed by branch sleeve while long filament buckles, be screwed on the pre-buried upper iron connecting reinforcement of the precast lattice beam be adjacent; After high-strength bolt 13 between adjacent precast lattice beam, branch sleeve have connected, the gap between adjacent precast lattice beam adopts non-shrinkage cement filled with mortar.Through above step, the precast lattice beam of multiple matrix arrangements can be connected to become the floor structure (becoming lattice girder deck) with globality, namely this floor structure can be used as electronic workshop core space floor, becomes electronic workshop and produces core space.
The upper surface of described beam body is embedded with precast lattice beam Heave Here 7.Precast lattice beam Heave Here 7 is embedded in the crossbeam of beam body and the connected node place of longeron.
Embodiment two, see Fig. 3, Fig. 4, is with the difference of embodiment one, and the precast lattice beam in embodiment two is the lattice girder in 24 holes.
The preparation method of described precast lattice beam, its step is as follows: step one, in factory, colligation lattice girder reinforcing cage (the longitudinal mesh sheet of first colligation, being then positioned on reinforcing bar binding frame by longitudinal mesh sheet, by importing the mode of reinforcing bar into, being completed by residue reinforcing bar binding); Step 2, in factory, being hung in by lattice girder reinforcing cage good for colligation builds in the mould of precast lattice beam, and the mould of building precast lattice beam comprises the bed die 15 be placed on pedestal 14, bolt is connected to detachable core die 16 on bed die and detachable side form 17 and bolt are connected to removable top 18(on detachable core die see Fig. 5, Fig. 6); Step 3, in factory, correct and build the mould of precast lattice beam; Step 4, in factory, build lattice girder concrete, and adopt the mode of overall maintenance to complete concrete curing; Step 5, in factory, form removal.Continuous repetition above-mentioned steps, can complete the production of whole precast lattice beam.
In described step 5, the concrete steps of form removal are first removed by detachable side form 17, then detachable core die set bolt is unclamped, precast lattice beam is together lifted by crane together with detachable core die and leaves pedestal, then adopt the power mode of knocking to knock detachable core die, detachable core die gets final product self falling.
Claims (6)
1. a precast lattice beam, comprise the latticed beam body (8) intersected by crossbeam (8.1) and longeron (8.2) coordination of reinforced concrete structure, it is characterized in that: four limits of beam body (8) are equipped with the link bolt hole (1) be connected with adjacent precast lattice beam, four angles of beam body are equipped with the vertical cut (V. cut) (2) of building non-shrinkage cement mortar (11), vertical cut (V. cut) is provided with pre-buried connecting reinforcement in (2);
Described pre-buried connecting reinforcement is by pre-buried upper iron connecting reinforcement and bury iron connecting reinforcement in advance and form;
Vertically direction, described vertical cut (V. cut) (2) are divided into the large breach in top (2.1) and middle and lower part small gap (2.2) two sections, described pre-buried upper iron connecting reinforcement is arranged in the large breach in top (2.1), and described iron connecting reinforcement of burying in advance is arranged in middle and lower part small gap (2.2);
Described pre-buried upper iron connecting reinforcement is by longitudinally pre-buried upper iron connecting reinforcement (3) and horizontal pre-buried upper iron connecting reinforcement (4) form;
Described iron connecting reinforcement of burying in advance forms by longitudinally burying iron connecting reinforcement (5) in advance and laterally burying iron connecting reinforcement (6) in advance.
2. a kind of precast lattice beam according to claim 1, is characterized in that: vertically direction, described link bolt hole (1) are arranged on the top of beam body.
3. a kind of precast lattice beam according to claim 1, is characterized in that: the upper surface of described beam body is embedded with precast lattice beam Heave Here (7).
4. a kind of precast lattice beam according to claim 3, is characterized in that: described precast lattice beam Heave Here (7) is embedded in the crossbeam of beam body and the connected node place of longeron.
5. a preparation method for the precast lattice beam in the claims 1 to 4 described in any one, is characterized in that step is as follows:
Step one, in factory, colligation lattice girder reinforcing cage;
Step 2, in factory, being hung in by lattice girder reinforcing cage good for colligation builds in the mould of precast lattice beam, and the mould of building precast lattice beam comprises the bed die (15) be placed on pedestal (14), bolt is connected to detachable core die (16) on bed die and detachable side form (17) and bolt are connected to removable top (18) on detachable core die;
Step 3, in factory, correct and build the mould of precast lattice beam;
Step 4, in factory, build lattice girder concrete, and adopt the mode of overall maintenance to complete concrete curing;
Step 5, in factory, form removal.
6. the preparation method of precast lattice beam according to claim 5, it is characterized in that: in described step 5, the concrete steps of form removal are first removed by detachable side form (17), then detachable core die set bolt is unclamped, precast lattice beam is together lifted by crane together with detachable core die and leaves pedestal, then adopt the power mode of knocking to knock detachable core die, detachable core die gets final product self falling.
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| CN111472488A (en) * | 2020-05-29 | 2020-07-31 | 抚州玉茗远大建筑工业有限公司 | Assembled full-prefabricated floor slab structure and construction method thereof |
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| CN2459381Y (en) * | 2000-12-15 | 2001-11-14 | 润弘精密工程事业股份有限公司 | Semi-precasitng waffle slab floor |
| CN101113622A (en) * | 2006-07-28 | 2008-01-30 | 和信营造股份有限公司 | Adjustable disassembling-free mold gridwork girder structure floor construction method |
| CN203487674U (en) * | 2013-09-02 | 2014-03-19 | 中建一局集团建设发展有限公司 | Precast lattice girder |
Family Cites Families (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2009191450A (en) * | 2008-02-12 | 2009-08-27 | Runhorn Pretech Engineering Co Ltd | Precast tiered structure of grating bed plate |
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- 2013-09-02 CN CN201310391353.4A patent/CN103452217B/en active Active
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| GB1364118A (en) * | 1970-11-27 | 1974-08-21 | Lemming Pedersen Og Eriksson R | Prefabricated deck elemenst of reinforced concrete |
| SU817168A1 (en) * | 1979-05-03 | 1981-03-30 | Тбилисский Зональный Научно-Исследова-Тельский И Проектный Институт Типовогои Экспериментального Проектированияжилых И Общественных Зданий "Тбилзнииэп" | Prefabricated ferroconcrete ceiling |
| CN2459381Y (en) * | 2000-12-15 | 2001-11-14 | 润弘精密工程事业股份有限公司 | Semi-precasitng waffle slab floor |
| CN101113622A (en) * | 2006-07-28 | 2008-01-30 | 和信营造股份有限公司 | Adjustable disassembling-free mold gridwork girder structure floor construction method |
| CN203487674U (en) * | 2013-09-02 | 2014-03-19 | 中建一局集团建设发展有限公司 | Precast lattice girder |
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Inventor after: Song Yu Inventor after: Qi Zhiyu Inventor after: Ma Tao Inventor after: Hou Bencai Inventor after: Wei Jian Inventor after: Cao Zhiyu Inventor after: Liu Yingqi Inventor after: Li Hao Inventor after: Wang Dongfeng Inventor after: Guo Ning Inventor after: Yin Shuo Inventor after: Wang Hongwei Inventor after: Liu Yu Inventor after: Li Shuai Inventor after: Zhou Guoliang Inventor before: Song Yu Inventor before: Qi Zhiyu Inventor before: Ma Tao Inventor before: Hou Bencai Inventor before: Wei Jian Inventor before: Cao Zhiyu Inventor before: Li Hao Inventor before: Wang Dongfeng Inventor before: Guo Ning Inventor before: Yin Shuo Inventor before: Wang Hongwei Inventor before: Liu Yu Inventor before: Li Shuai Inventor before: Zhou Guoliang |
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Effective date of registration: 20160803 Address after: 100102 Beijing City, Chaoyang District Road No. 17 building, Wanghua Patentee after: China Construction First Building Group Co., Ltd. Patentee after: Samsung construction (Shanghai) Co., Ltd. Address before: 100102 Beijing City, Chaoyang District Road No. 17 building, Wanghua Patentee before: China Construction First Building Group Co., Ltd. |