CN103696567A - Construction method for casting prefabricated mass concrete beam by using special support devices - Google Patents
Construction method for casting prefabricated mass concrete beam by using special support devices Download PDFInfo
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- CN103696567A CN103696567A CN201310497301.5A CN201310497301A CN103696567A CN 103696567 A CN103696567 A CN 103696567A CN 201310497301 A CN201310497301 A CN 201310497301A CN 103696567 A CN103696567 A CN 103696567A
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Abstract
The invention relates to a construction method for casting a prefabricated mass concrete beam by using special support devices. The construction method comprises the steps: (1) calculating the number of used special support devices according to total weight; (2) locking a scaffold; (3) sleeving vertical rod sleeves, which are integrally formed beneath lower supporting stages, on the upper ends of scaffold vertical rods below a bottom mold and fixing by pin bolts, welding the lower ends of guiding tubes to the upsides of the lower supporting stages, sleeving springs on the external walls of the guiding tubes, and inserting guiding columns, which are integrally formed beneath upper supporting stages, into the guiding tubes; (4) fixedly mounting scaffold cross rods and wooden square beams at the upsides of the upper supporting stages; (5) carrying out first-time concrete pouring, and after predetermined strength is reached, carrying out second-time concrete pouring until the casting of a whole prefabricated mass concrete beam is completed. According to the construction method, the rigid connection between the beam and a support system after the first-time concrete pouring is completed is changed, and supported parts and the beam bottom mold form flexible connection, so that cast parts and the scaffold are cooperatively stressed during the second-time pouring of mass concrete.
Description
Technical field
The invention belongs to concrete beam construction field, especially a kind of construction method of building assembling concrete in mass beam with Special supporting device.
Background technology
In high-lager building design, beam-type transition layer design is a lot.In construction, in order to reduce the weight of concreting first, reduce the consumption of shuttering supporting, effectively reduce engineering cost, the general coincidence Pouring formwork that adopts in construction.After how effectively control is built for the first time in this construction method, build beam and scaffold cooperative bearing that part forms intensity, jointly supported the key job that concrete weight that secondary builds and working load become assurance secondary pouring construction quality.In prior art, common way is: in beam conversion layer construction period, in concreting intensity for the first time, reach after designing requirement, before concreting for the second time, the fastener that unclamps lower template support top end cross bar and vertical rod carries out off-load, and then all tighten, make concrete beam and form bracing system that the first step is built jointly bear upper load.Although this kind of way is simple, poor operability in Practical Project, the restriction that is easy to be subject to constructor's operant level causes engineering accident, and the degree of accuracy simultaneously operating is not high.
Summary of the invention
The object of the invention is to overcome the deficiencies in the prior art, a kind of construction method of building assembling concrete in mass beam with Special supporting device is provided, this construction method is simple to operate, and in whole reinforced concrete beam casting process, without unclamping fastener off-load, safety and the degree of accuracy are high.
The present invention solves its technical problem and is achieved through the following technical solutions:
With Special supporting device, build a construction method for assembling concrete in mass beam, its method comprises the steps:
(1), according to comprising that the total weight of assembling concrete in mass beam and template goes out the usage quantity of Special supporting device, the shear modulus of Special supporting device medi-spring and the modulus of elasticity of spring;
(2), erecting scaffold vertical rod and scaffold cross bar lock by fastener, according to the usage quantity of the assembling concrete in mass beam bottom board below Special supporting device calculating, determine and lay bed die below scaffold upright rod quantity, and Special supporting device is installed in scaffold upright rod upper end below bed die, this Special supporting device comprises top cushion cap, bottom cushion cap, spring and guide pipe;
(3), by integrally formed vertical rod sleeve pipe box below the cushion cap of bottom, be contained in the upper end of bed die below scaffold upright rod and fix with pin, guide pipe lower end be welded on bottom cushion cap above, the spring housing that meets shear modulus and modulus of elasticity result of calculation is contained in to guide pipe outer wall, integrally formed lead below the cushion cap of top is inserted in guide pipe, lead length is less than guide pipe length, is pressed in spring upper end below the cushion cap of top;
(4), on the cushion cap of top, be fixedly mounted with scaffold cross bar, on scaffold cross bar, set up brace stupefied;
(5), on brace is stupefied, assemble template and the cage of reinforcement of assembling concrete in mass beam, assemble the complete concreting for the first time that carries out, after reaching predetermined strength, carry out for the second time concreting until assembling concrete in mass beam monobloc cast is complete.
Above-mentioned spring is high strength hard spring.
Below the above-mentioned top cushion cap corresponding with guide pipe upper end, be fixed with rubber ring.
Advantage of the present invention and beneficial effect are:
1, this builds upper in the construction method of assembling concrete in mass beam with Special supporting device, lower cushion cap adopts socket joint mode and high-strength hard spring to connect, can coordinate with traditional design of coupler scaffold vertical rod applicable, the power transmission of assembling concrete in mass secondary casting beams bed die Special supporting device is good, on, lower cushion cap is directly contact not, leave certain gap, change the rigidly connected shortcoming of traditional scaffold upright rod and beam bottom board, construction method is simple to operate, in whole reinforced concrete beam casting process without unclamping fastener off-load, safety and the degree of accuracy are high.
The construction method of 2, building assembling concrete in mass beam with Special supporting device is by assembling concrete in mass beam bottom board Special supporting device, change traditional secondary and build unloading method, guarantee that secondary pouring construction quality improves working security, effectively the reduction of erection time.
3,, after the present invention has changed first step concreting and completes, the rigidly connected problem of beam and support system, can automatic fine tuning joint lower support position, support zone and beam bottom board is formed and flexibly connect, and effectively unloads.Solution concrete in mass secondary has been built a difficult problem for part and scaffold cooperative bearing in building, avoid the drawback of traditional discharging method.
Accompanying drawing explanation
Fig. 1 is scheme of installation of the present invention;
Fig. 2 is the A portion enlarged drawing of Fig. 1.
The specific embodiment
Below by specific embodiment, the invention will be further described, and following examples are descriptive, is not determinate, can not limit protection scope of the present invention with this.
With Special supporting device, build a construction method for assembling concrete in mass beam, its method comprises the steps:
(1), according to comprising that the total weight of assembling concrete in mass beam 1 and template goes out the usage quantity of Special supporting device, the shear modulus of Special supporting device medi-spring 11 and the modulus of elasticity of spring;
(2), erecting scaffold vertical rod 5 and scaffold cross bar 4 lock by fastener 6, scaffold upright rod lower end is fixedly mounted with the bar 7 of sweeping the floor, according to the usage quantity of the assembling concrete in mass beam bottom board below Special supporting device calculating, determine and lay bed die below scaffold upright rod quantity, and Special supporting device is installed in scaffold upright rod upper end below bed die 2, this Special supporting device comprises top cushion cap 8, bottom cushion cap 13, spring and guide pipe 12;
(3), by integrally formed vertical rod sleeve pipe 14 below the cushion cap of bottom, be sleeved on the upper end of bed die below scaffold upright rod fixing with pin 15, guide pipe lower end be welded on bottom cushion cap above, the spring housing that meets shear modulus and modulus of elasticity result of calculation is contained in to guide pipe outer wall, spring is high strength hard spring, integrally formed lead 10 below the cushion cap of top is inserted in guide pipes, lead length is less than guide pipe length, below the cushion cap of top, be pressed in spring upper end, be fixed with rubber ring 9 below the top cushion cap corresponding with guide pipe upper end;
(4), on the cushion cap of top, be fixedly mounted with scaffold cross bar, on scaffold cross bar, set up brace stupefied 3;
(5), on brace is stupefied, assemble template and the cage of reinforcement of assembling concrete in mass beam, assemble the complete concreting for the first time that carries out, after reaching predetermined strength, carry out for the second time concreting until assembling concrete in mass beam monobloc cast is complete.
Applicating example of the present invention, assembling concrete in mass beam is 2200 * 1000mm, structure floor height 5900mm, bottom elevation 3700mm.Sweep the floor bar from foot scaffold cross bar absolute altitude 275mm; Beam is divided into 5 road scaffold upright rods, scaffold upright rod spacing 363mm; Scaffold cross bar is set up 3 roads, the vertical spacing 1100mm of scaffold cross bar; Beam side split bolt is established 5 roads, spacing 440mm; By calculating spring, select 60Si2Mn tri-class high strength hard springs, shear modulus 78.5G/GPa, this spring of modulus of elasticity 197E/GPa is good, is suitable for bearing large load, temperature applicable range-40～200 ℃.This practical example is built at twice, build for the first time highly as 1000mm, for the first time in pouring construction process to having built, high strength hard spring keeps without the stable state of being out of shape.After having built for the first time, carry out effective maintenance until form active strength, lay the reinforcing bar of casting beams part and floor for the second time, carry out the second concreting.Concreting carries out monobloc cast the thick beam of top 1200mm and floor for the second time.In the middle of the process of building, the guide pipe upper end on the cushion cap of bottom and the rubber ring below the cushion cap of top are realized closed, complete secondary pouring construction.Scaffold in the present embodiment is set up by < < building operations fastener type steel pipe scaffold technical specification of security > > JGJ130-2011 code requirement.
Claims (3)
1. with Special supporting device, build a construction method for assembling concrete in mass beam, it is characterized in that: its method comprises the steps:
(1), according to comprising that the total weight of assembling concrete in mass beam and template goes out the usage quantity of Special supporting device, the shear modulus of Special supporting device medi-spring and the modulus of elasticity of spring;
(2), erecting scaffold vertical rod and scaffold cross bar lock by fastener, according to the usage quantity of the assembling concrete in mass beam bottom board below Special supporting device calculating, determine and lay bed die below scaffold upright rod quantity, and Special supporting device is installed in scaffold upright rod upper end below bed die, this Special supporting device comprises top cushion cap, bottom cushion cap, spring and guide pipe;
(3), by integrally formed vertical rod sleeve pipe box below the cushion cap of bottom, be contained in the upper end of bed die below scaffold upright rod and fix with pin, guide pipe lower end be welded on bottom cushion cap above, the spring housing that meets shear modulus and modulus of elasticity result of calculation is contained in to guide pipe outer wall, integrally formed lead below the cushion cap of top is inserted in guide pipe, lead length is less than guide pipe length, is pressed in spring upper end below the cushion cap of top;
(4), on the cushion cap of top, be fixedly mounted with scaffold cross bar, on scaffold cross bar, set up brace stupefied;
(5), on brace is stupefied, assemble template and the cage of reinforcement of assembling concrete in mass beam, assemble the complete concreting for the first time that carries out, after reaching predetermined strength, carry out for the second time concreting until assembling concrete in mass beam monobloc cast is complete.
2. construction method of building assembling concrete in mass beam with Special supporting device according to claim 1, is characterized in that: described spring is high strength hard spring.
3. construction method of building assembling concrete in mass beam with Special supporting device according to claim 1, is characterized in that: below the described top cushion cap corresponding with guide pipe upper end, be fixed with rubber ring.
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| CN201310497301.5A CN103696567B (en) | 2013-10-21 | 2013-10-21 | The construction method of assembling concrete in mass beam is built with Special supporting device |
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| CN103696567B CN103696567B (en) | 2015-10-14 |
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Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107780656A (en) * | 2016-08-31 | 2018-03-09 | 江苏南通二建集团有限公司 | Application process of the steel combined support system in super-span conversion beam formwork system |
| CN108824805A (en) * | 2018-07-20 | 2018-11-16 | 宁夏爱打听科技有限公司 | A kind of steel reinforced concrete beam forms is without support system erecting device |
| CN110255208A (en) * | 2019-06-27 | 2019-09-20 | 中国能源建设集团安徽省电力设计院有限公司 | Across the transfer station and construction method of original coal transporting trestle |
| CN113250317A (en) * | 2021-06-21 | 2021-08-13 | 重庆电子工程职业学院 | Double-concrete-beam and concrete frame column connecting structure for building design |
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| US4505087A (en) * | 1983-03-14 | 1985-03-19 | U.S. Filigree Wideslab, Inc. | Method of construction of concrete decks with haunched supporting beams |
| KR100890156B1 (en) * | 2008-10-08 | 2009-03-20 | 김문구 | Jack support repair device |
| CN101725202A (en) * | 2008-10-10 | 2010-06-09 | 中国二十冶建设有限公司 | Superimposed pouring procedure of high-rise building transfer floor beam plate |
| CN101761231A (en) * | 2009-12-31 | 2010-06-30 | 青建集团股份公司 | Supporting structure of beam type conversion layer template and method for strengthening substructure |
| KR20100136650A (en) * | 2009-06-19 | 2010-12-29 | 중산하이픽스 주식회사 | Concrete placing leveler |
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2013
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Patent Citations (5)
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| US4505087A (en) * | 1983-03-14 | 1985-03-19 | U.S. Filigree Wideslab, Inc. | Method of construction of concrete decks with haunched supporting beams |
| KR100890156B1 (en) * | 2008-10-08 | 2009-03-20 | 김문구 | Jack support repair device |
| CN101725202A (en) * | 2008-10-10 | 2010-06-09 | 中国二十冶建设有限公司 | Superimposed pouring procedure of high-rise building transfer floor beam plate |
| KR20100136650A (en) * | 2009-06-19 | 2010-12-29 | 중산하이픽스 주식회사 | Concrete placing leveler |
| CN101761231A (en) * | 2009-12-31 | 2010-06-30 | 青建集团股份公司 | Supporting structure of beam type conversion layer template and method for strengthening substructure |
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107780656A (en) * | 2016-08-31 | 2018-03-09 | 江苏南通二建集团有限公司 | Application process of the steel combined support system in super-span conversion beam formwork system |
| CN108824805A (en) * | 2018-07-20 | 2018-11-16 | 宁夏爱打听科技有限公司 | A kind of steel reinforced concrete beam forms is without support system erecting device |
| CN110255208A (en) * | 2019-06-27 | 2019-09-20 | 中国能源建设集团安徽省电力设计院有限公司 | Across the transfer station and construction method of original coal transporting trestle |
| CN110255208B (en) * | 2019-06-27 | 2024-04-26 | 中国能源建设集团安徽省电力设计院有限公司 | Transfer station crossing original coal conveying trestle and construction method |
| CN113250317A (en) * | 2021-06-21 | 2021-08-13 | 重庆电子工程职业学院 | Double-concrete-beam and concrete frame column connecting structure for building design |
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| CN103696567B (en) | 2015-10-14 |
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