CN203891285U - Cast-in-place reinforced concrete hollow floor or hollow floorslab with both thermal insulation and sound insulation functions - Google Patents
Cast-in-place reinforced concrete hollow floor or hollow floorslab with both thermal insulation and sound insulation functions Download PDFInfo
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- CN203891285U CN203891285U CN201120044027.2U CN201120044027U CN203891285U CN 203891285 U CN203891285 U CN 203891285U CN 201120044027 U CN201120044027 U CN 201120044027U CN 203891285 U CN203891285 U CN 203891285U
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- thermal insulation
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- reinforcing steel
- reinforced concrete
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Abstract
The utility model relates to a cast-in-place reinforced concrete hollow floor or hollow floorslab with both thermal insulation and sound insulation functions. The hollow floor or hollow floorslab is prepared by concrete and a reinforcing steel bar poured together and is characterized in that the reinforcing steel bar consists of an upper layer of bar-mat reinforcement and a lower layer of bar-mat reinforcement; a grid space formed by a upper layer of reinforcing steel bar and a lower layer of reinforcing steel bar is filled with a spherical thermal insulation acoustic insulating material body; the diameter of the spherical thermal insulation acoustic insulating material body is less than the dimension of the grid formed by the upper layer of reinforcing steel bar and the lower layer of reinforcing steel bar that are bound horizontally and longitudinally; and the size of the spherical thermal insulation acoustic insulating material body accounts for 10-30% of the size of the grid space formed by the upper and the lower layers of reinforcing steel bars in longitudinal and horizontal directions. The thermal insulation material filled in the reinforced concrete hollow floor or hollow floorslab can improve the thermal insulation property of the reinforced concrete hollow floor or hollow floorslab and meanwhile, block up sound with certain wavelength from spreading, functioning in sound insulation. When being used for unidirectional and bidirectional load, the hollow floor has good bearing capacity.
Description
Technical field
The utility model relates to a kind of building structure, especially a kind of floor framing or cassette ceiling and preparation method thereof, specifically a kind of cast-in-situ reinforced concrete hollow floor or cassette ceiling that has insulation and sound insulation function concurrently.
Background technology
In order to adapt to, modern architecture is multi-functional, the needs of multipurpose, huge pillar net, large bay, and bar concrete building roof structure is always in continuous improvement, and new form of structure continues to bring out.Appearance and the application of reinforced concrete hollow floor start from nineteen nineties, be accompanied by the development of inner mould technology and perfect, the development of hollow building cover or cassette ceiling is very fast, it has realized the requirement of building huge pillar net, large space, there is again good structural performance simultaneously, the multilayer and the highrise building that are applicable to various structures form, particularly large span, large space, have good development prospect.
Through a large amount of theory and experimental study and engineering practices, concrete hollow building roof or cassette ceiling have had multiple application form in engineering, common mainly contain traditional prefabricated unidirectional cylinder core shape cassette ceiling, dense rib type floor and pre-stress hollow superstructure or cassette ceiling.
It is fast that traditional precast hollow superstructure or cassette ceiling have construction speed, the advantages such as cost is low, but owing to firmly not connecting between adjacent two precast hollow slabs, only with material blinds such as mortar or pitches, thereby not only globality is poor, anti-seismic performance is low, and easily occur that ftracture in gap, infiltration, to user, bring very large psychological pressure and use inconvenience, the hollow features of this plate determines that it is only applicable to do one-way slabs in addition, two-way load-carrying properties are poor, and this precast hollow slab is seldom used now.
Multi-ribbed plate has well solved the problem of two-way carrying, and has advantages of that deadweight is lighter, and the superstructure of this type or cassette ceiling are applied more at present in engineering, particularly large-area superstructure or cassette ceiling.But build dense rib type superstructure or cassette ceiling, need tailored template, and higher to construction process requirement, construction speed is slow, and its cost is higher, and pre-stress hollow superstructure or cassette ceiling also have similar problem in this respect.
In addition, the building in current green building or the north, relying on warming and heat insulation measure that floor is done is all after concrete floor system or cassette ceiling have been built, and lays logical warm or heat insulating material on floor structure, then laying floor forms in the above.This kind of mode can reach good warming and heat insulation effect, but need to after completing, building carry out secondary construction operation beyond doubt, increase engineering cost, and the warming and heat insulation layer of laying is by the floor height between reduction floor, there is no to make full use of floor itself and carries out thermal insulation.For concrete floor system or cassette ceiling, if can improve thermal and insulating performance, will greatly reduce air-conditioning expense.
In a word, the reinforced concrete hollow floor using at present or cassette ceiling also exist two-way supporting capacity not enough, construction technology difficulty is large, high cost drawback, therefore research and design is a kind of from heavy and light, load-carrying properties and rigidity are better, easy construction, and cast-in-situ reinforced concrete hollow floor or the cassette ceiling that can have certain heat preservation and soundproof performance concurrently have great engineering practical value.
Summary of the invention
The purpose of this utility model is for existing cast-in-situ floor function singleness, heat insulation poor with soundproof effect, need do special post processing and just can reach the problem of sound-insulating effect, invent a kind of can guarantee that two-way intensity has again that heat preservation and soundproof meets environmental requirement have insulation and cast-in-situ reinforced concrete hollow floor or the cassette ceiling of sound insulation function concurrently.
The technical solution of the utility model is:
A kind of cast-in-situ reinforced concrete hollow floor or cassette ceiling that has insulation and sound insulation function concurrently, it is built and is formed by concrete and reinforcing bar, it is characterized in that described reinforcing bar is comprised of top mat and lower floor's steel mesh reinforcement, in top reinforcement and the formed latticed space of lower floor's reinforcing bar, be filled with spherical heat-insulating and noise-insulating material body, and the diameter of spherical heat-insulating and noise-insulating material body is less than the size of the vertical formed grid of transverse binding of levels reinforcing bar, and between spherical thermal insulation separation, the sphere volume sum of material bodies accounts for the 10-30% of whole superstructure or cassette ceiling volume.
Between described thermal insulation separation, material bodies is a kind of or its combination in the foamed plastics such as polyurathamc, foamed polyethylene.
Between described thermal insulation separation, material bodies is lightweight, and its density is far below concrete density.
The beneficial effects of the utility model:
1. the utility model, by fill insulant material in reinforced concrete floor or cassette ceiling, can improve the heat-insulating property of reinforced concrete floor or cassette ceiling, and filler can be blocked the propagation of the sound of certain wavelength simultaneously, plays the effect of sound insulation.
2. the filler density that the utility model adopts is less, by filling a certain proportion of filler, can reduce deadweight 20% left and right of concrete floor system or cassette ceiling.
3. the utility model is by after pressing assigned address placement filler concreting, bidirectional stress concrete floor system or the cassette ceiling with i beam cross sectional shape continuous on the both direction intersecting vertically have been formed, for unidirectional and bidirectional load, all there is good supporting capacity.
4. the filler that the utility model adopts, for not having directive spheroid, does not need to adjust direction during placement, by auxiliary muscle permanent position also than being easier to, easy construction.
Accompanying drawing explanation
Fig. 1 is the plan view of an example before cast-in-situ steel reinforced concrete superstructure of the present utility model or cassette ceiling concreting.
Fig. 2 is the A-A ' sectional drawing of Fig. 1.
Fig. 3 is the B-B ' sectional drawing of Fig. 1.
Symbol description in each figure is as follows:
1a: concrete floor system or cassette ceiling lower floor transverse reinforcement;
1b: concrete floor system or cassette ceiling lower floor longitudinal reinforcement;
1c: be connected to the auxiliary muscle on concrete floor system or cassette ceiling lower floor reinforcing bar;
2a: concrete floor system or cassette ceiling upper strata transverse reinforcement;
2b: concrete floor system or cassette ceiling upper strata longitudinal reinforcement;
2c: be connected to the auxiliary muscle on concrete floor system or cassette ceiling top reinforcement;
3: deadweight is light and have a filler that the material of certain heat-insulating property is made.
The specific embodiment
Below in conjunction with drawings and Examples, the utility model is further described.
Embodiment mono-.
As Figure 1-3.
A kind of cast-in-situ reinforced concrete hollow floor or cassette ceiling that has insulation and sound insulation function concurrently, it is built and is formed by concrete and reinforcing bar, described reinforcing bar is comprised of top mat and lower floor's steel mesh reinforcement, in top reinforcement and the formed latticed space of lower floor's reinforcing bar, be filled with spherical heat-insulating and noise-insulating material body, and the diameter of spherical heat-insulating and noise-insulating material body is less than the size of the vertical formed grid of transverse binding of levels reinforcing bar, and between spherical thermal insulation separation, the sphere volume sum of material bodies accounts for the 10-30% of whole superstructure or cassette ceiling volume.Between described thermal insulation separation, material bodies is a kind of or its combination in the foamed plastics such as polyurathamc, foamed polyethylene.Between described thermal insulation separation, material bodies is lightweight, and its density is far below concrete density.
Embodiment bis-.
As Figure 1-3.
The cast-in-situ steel reinforced concrete superstructure or the cassette ceiling that have insulation and sound insulation function concurrently, it is prepared from by following steps:
1. according to designing requirement, select suitable reinforcing bar at two orthogonal directions in length and breadth, according to lower floor's reinforcing bar of a determining deviation colligation concrete floor system or cassette ceiling.
2. according to the thickness of the final superstructure being shaped or cassette ceiling, determine the diameter of filler spheroid, diameter is preferably according to the varied in thickness of concrete floor system or cassette ceiling, be conducive at heat preservation and soundproof, when alleviating deadweight, keep the rigidity of concrete floor system or cassette ceiling.
3. determine after the diameter of filler material, according to the diameter of filler spheroid, determine the spacing of auxiliary muscle, auxiliary muscle is the fine steel rib of two parallel placements, can limit the movement in one direction of filler spheroid.
The mode colligation concrete floor system that 4.Tong lower floor reinforcing bar is identical or the top reinforcement of cassette ceiling, colligation is well after upper and lower two-layer reinforcing bar, in the grid that both direction reinforcing bar forms in length and breadth, place the filler spheroid that heat insulating material is made, because filler is for not having directive spheroid, as long as spheroid is put in.
5. after top reinforcement colligation well, in the spacing of each grid of top reinforcement, also parallel placement fix two auxiliary muscle in the vertical direction of the auxiliary muscle of Yu lower floor, the movement of restriction spheroid in another direction, filler spheroid position on transverse and longitudinal above-below direction has just been fixed like this.
6, adopt conventional concreting method to carry out concreting, remove template after waiting concrete to reach some strength.
If the stress characteristic of plate is not two-way slab, or the reinforcing bar in the transverse and longitudinal direction of the plate grid the non-square that form, also can adjust being shaped as of filler cylindrical or in long dimensional directions, place continuously two beads.In addition, the auxiliary muscle form of fixed pellet position is not limited to this method, as long as can reach the fixedly object of filler spheroid position.
Below in conjunction with a concrete example, be further described, as Figure 1-3.
Example: one 4.2 * 3.6m room, floor is two-way slab, and thickness of slab is got 1/36 of span, is 100mm, and its bearing load is static load 250kN/m
2, mobile load 200kN/m
2, main reinforcement adopts
transverse and longitudinal spacing 100mm, considers levels thickness of protection tier 15mm, and it is 70mm. that sphere diameter is filled in design
Thereby can draw, each mesh space is of a size of 100 * 100 * 100mm, sphere diameter is 50mm, fills a spheroid in each space, and filling proportion is about 18%.
Because filler has only replaced superstructure or the middle part concrete of cassette ceiling height, the concrete floor system after filling or cassette ceiling cross section can be simplified to continuous i beam side by side, and its bearing capacity is substantially unaffected.And the foamed plastics such as the polyurathamc of filling, foamed polyethylene, its coefficient of thermal conductivity is starkly lower than concrete, thereby has had certain thermal insulation effect.
While not yet obtaining the test value of concrete heat performance in the concept phase, according to the percentage by weight of each constituent of concrete, estimate, and advise that estimated value is multiplied by 1.05 correction factor, its expression formula is as follows:
λ
c＝ω
pλ
p+ω
wλ
w+ω
faλ
fa+ω
caλ
ca
λ
cλ
pλ
wλ
faλ
cabe respectively the coefficient of thermal conductivity of concrete, cement, water, fines, coarse aggregate;
ω
pω
wω
faω
cathe quality that is respectively cement, water, fines, coarse aggregate accounts for the percentage of concrete gross mass (referring to the < < mass concrete temperature stress by China Electric Power Publishing House and temperature control > > mono-book that Zhu Baifang shows).
According to above-mentioned theory, due to the density of filler, compare littlely with concrete, with packing volume, than replacing mass ratio, according to formula of reduction below, carry out theory analysis:
λ＝(1-v)λ
c+vλ
v
V represents packing volume ratio, λ
vfiller coefficient of thermal conductivity.
The coefficient of thermal conductivity of ordinary concrete is according to 1.74W/ (mK), and the coefficient of thermal conductivity 0.03W/W/ (mK) of foamed plastics counts, the impact of different filling proportions on coefficient of thermal conductivity of deriving below.
Different filling proportions calculate the simplification of coefficient of thermal conductivity impact is theoretical
From the theory analysis of simplifying, can find out, along with the raising of filling proportion, the coefficient of thermal conductivity of concrete hollow floor is linear downward trend substantially.
The utility model does not relate to partly all prior aries that maybe can adopt same as the prior art to be realized.
Claims (2)
1. one kind has insulation and cast-in-situ reinforced concrete hollow floor or the cassette ceiling of sound insulation function concurrently, it is built and is formed by concrete and reinforcing bar, it is characterized in that described reinforcing bar is comprised of top mat and lower floor's steel mesh reinforcement, in top reinforcement and the formed mesh space of lower floor's reinforcing bar, be filled with spherical heat-insulating and noise-insulating material body, and the diameter of spherical heat-insulating and noise-insulating material body is less than the size of the vertical formed grid of transverse binding of levels reinforcing bar, between spherical thermal insulation separation, the volume of material bodies accounts for the 10-30% of the vertical formed mesh space volume of transverse reinforcement of levels.
2. hollow building cover according to claim 1 or cassette ceiling, it is characterized in that described heat-insulating and noise-insulating material body from heavy and light, its density is far below concrete density.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201120044027.2U CN203891285U (en) | 2011-01-24 | 2011-02-22 | Cast-in-place reinforced concrete hollow floor or hollow floorslab with both thermal insulation and sound insulation functions |
Applications Claiming Priority (3)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201110024659 | 2011-01-24 | ||
| CN201110024659.7 | 2011-01-24 | ||
| CN201120044027.2U CN203891285U (en) | 2011-01-24 | 2011-02-22 | Cast-in-place reinforced concrete hollow floor or hollow floorslab with both thermal insulation and sound insulation functions |
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| Publication Number | Publication Date |
|---|---|
| CN203891285U true CN203891285U (en) | 2014-10-22 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN201120044027.2U Expired - Fee Related CN203891285U (en) | 2011-01-24 | 2011-02-22 | Cast-in-place reinforced concrete hollow floor or hollow floorslab with both thermal insulation and sound insulation functions |
| CN2011100423483A Active CN102134888B (en) | 2011-01-24 | 2011-02-22 | Cast-in-place reinforced concrete hollow floor (plate) with both thermal insulation and sound insulation functions and preparation method thereof |
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| Application Number | Title | Priority Date | Filing Date |
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| CN2011100423483A Active CN102134888B (en) | 2011-01-24 | 2011-02-22 | Cast-in-place reinforced concrete hollow floor (plate) with both thermal insulation and sound insulation functions and preparation method thereof |
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Cited By (4)
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| CN105569261A (en) * | 2015-06-09 | 2016-05-11 | 蔡顺利 | Three-dimensional space-network-structure board |
| CN105821999A (en) * | 2016-03-23 | 2016-08-03 | 吉林建筑大学 | Design method for cast-in-place concrete bidirectional hollow floor |
| CN112012388A (en) * | 2020-08-25 | 2020-12-01 | 华恒建设集团有限公司 | Heat-preservation recycled aggregate floor and processing technology thereof |
| CN112110683A (en) * | 2020-08-24 | 2020-12-22 | 马得利 | Heat-insulating concrete |
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| CN103243856B (en) * | 2013-04-23 | 2015-05-27 | 宣卫红 | Spherical filling body for reinforced concrete hollow component and fixation method |
| CN103883053A (en) * | 2014-02-12 | 2014-06-25 | 浙江杭萧钢构股份有限公司 | Hollow floorslab of steel-bar truss floor support and construction method of floorslab |
| CN103967182B (en) * | 2014-05-16 | 2016-05-04 | 金陵科技学院 | Monoblock type insulation building cover board and construction method |
| CN104314219A (en) * | 2014-10-09 | 2015-01-28 | 江苏瑞永建设工程技术有限公司 | Cast-in-place reinforced concrete sound absorbing hollow floor cover plate |
| CN106760143B (en) * | 2016-12-16 | 2022-08-05 | 张效思 | Light prefabricated body and preparation method thereof |
| CN108947569B (en) * | 2018-08-30 | 2021-10-01 | 盛世瑶兰（深圳）科技有限公司 | High-strength hollow heat-insulation building material and application thereof |
| CN110331807B (en) * | 2019-07-11 | 2024-02-06 | 江西建工第二建筑有限责任公司 | Assembled spherical hollow slab |
| CN113775066A (en) * | 2021-11-15 | 2021-12-10 | 太原理工大学 | Integrated into one piece's low frequency vibration isolation composite sheet of making an uproar that falls |
Family Cites Families (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH094130A (en) * | 1995-06-23 | 1997-01-07 | Nippon Concrete Ind Co Ltd | Concrete product and method for placing concrete for joint |
| CN2568724Y (en) * | 2002-09-23 | 2003-08-27 | 陈杨忠 | Light weight concrete core integral composite floorslab |
| DE10351989A1 (en) * | 2003-10-23 | 2005-06-09 | Bathon, Leander | Wood-concrete composite systems made of wooden components, intermediate layers and concrete components |
| CN1818274A (en) * | 2004-11-09 | 2006-08-16 | 吴学文 | Filling tyre mould and its sandwich and hollow structure |
| JP2009013682A (en) * | 2007-07-05 | 2009-01-22 | Shimizu Corp | Synthetic flooring, precast concrete floor plate, and method of constructing synthetic flooring |
| CN101270597A (en) * | 2008-04-24 | 2008-09-24 | 广东省建筑设计研究院 | Steel reinforced concrete floor with embedded light building block and construction method thereof |
| CN201217875Y (en) * | 2008-07-10 | 2009-04-08 | 新蒲建设集团有限公司 | Thin wall hollow pipe cover board |
-
2011
- 2011-02-22 CN CN201120044027.2U patent/CN203891285U/en not_active Expired - Fee Related
- 2011-02-22 CN CN2011100423483A patent/CN102134888B/en active Active
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105569261A (en) * | 2015-06-09 | 2016-05-11 | 蔡顺利 | Three-dimensional space-network-structure board |
| CN105821999A (en) * | 2016-03-23 | 2016-08-03 | 吉林建筑大学 | Design method for cast-in-place concrete bidirectional hollow floor |
| CN112110683A (en) * | 2020-08-24 | 2020-12-22 | 马得利 | Heat-insulating concrete |
| CN112012388A (en) * | 2020-08-25 | 2020-12-01 | 华恒建设集团有限公司 | Heat-preservation recycled aggregate floor and processing technology thereof |
Also Published As
| Publication number | Publication date |
|---|---|
| CN102134888B (en) | 2012-03-28 |
| CN102134888A (en) | 2011-07-27 |
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| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20141022 Termination date: 20150222 |
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| EXPY | Termination of patent right or utility model |