CN103541480A - Construction method for crack-resistant cast-in-situ hollow floor - Google Patents
Construction method for crack-resistant cast-in-situ hollow floor Download PDFInfo
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- CN103541480A CN103541480A CN201310511231.4A CN201310511231A CN103541480A CN 103541480 A CN103541480 A CN 103541480A CN 201310511231 A CN201310511231 A CN 201310511231A CN 103541480 A CN103541480 A CN 103541480A
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Abstract
The invention provides a construction method for a crack-resistant cast-in-situ hollow floor. The crack-resistant cast-in-situ hollow floor comprises a top flange plate (2), beams (3), a bottom flange plate (4) and combined filling members (5) placed in a floor ribbed beam gridding. The construction method includes casting wavy bottom flange concrete after reserving and pre-burying of pipelines, and then casting the beams and top flange concrete to construct the hollow floor (1). The inner surfaces of the top flange plate (2) and the bottom flange plate (4) are in a wavy shape (6). The value of the wave crest is larger than 50mm. The combined filling members are formed by more than three gas filled tubes (7) in parallel combination, and adjacent bonding portions (8) of the gas filled tubes are in close contact. The length of each single tube is as same as the width (51) of the combined filling members (5) when the combined filling members (5) are in parallel combination. The sum of the diameters of multiple tubes is as same as the length (52) of the combined filling members (5), and the ratio of the length (52) to the width (51) is not less than 0.7. The gas filled tube combined filling members (5) act with a steel tube supporting and separating component (9); the gas filled tubes are fully utilized, and the defects of punching resistance and cracking in the prior art are overcome according to features of the tubes; cost of the floor can be saved, convenient and rapid construction is realized, and the structure of the floor is more reasonable.
Description
Technical field
The present invention relates to a kind of novel floor framing, steel reinforced concrete combined hollow floor, one-way sealing rib slot type superstructure and high-rise Core Walls Structure superstructure, be specifically related to a kind of crack resistance cast-in-situ hollow building roof and build up method.
Background technology
At present in cast-in-situ reinforced concrete hollow floor technical field, conventionally adopt independent tubulose obturator or square obturator to be placed in superstructure grid, after fluid concrete, surrounding's formation top flange plate at independent obturator, bottom wing listrium and girt strip, build up cast-in-situ hollow building roof, as the ZL98231113.3 " structural member for concrete thin-wall cylinder " of inventor's acquisition, this patent is widely applied in hollow building cover engineering, solved the technical problem of cast-in-situ hollow building roof non-core-drawing pore-creating, but, due to the rigidity of longitudinal tubule (L tubule) and transverse tube both direction not etc., only for " I-shaped " cross section superstructure of one-way slabs, between two pipes are adjacent, has pipe beam on alternate frames more than 50mm at least, girt strip also has the construction measures such as reinforced mesh, the thick 50mm that is greater than of steel concrete of frange plate under pipe, the concrete evacuation rate of hollow building cover is low, building costs is high, uneconomical, if by single tube enlarged diameter, between pipe, rib reduces, but the height of superstructure is corresponding, thickens, and loses more than gain, as inventor declares ZL200410082381.9 " a kind of cavity floor slab with small dense ribs ", with square thin-wall box body, in floor slab with small dense ribs, form hollow layer, realized " T font " cross section superstructure of bidirectional stress, in superstructure bottom wing listrium, be unworthy of reinforcing bar, thickness of slab is reduced to 15mm, has very large saving, but, because superstructure bottom wing listrium is too thin, reach cast closely knit, to construction, increased difficulty, in order to prevent bottom cracking, also set up cracking resistance gauze wire cloth.
But, because tubular shape obturator is only applied in the superstructure of " I-shaped " cross section; Though the obturator of square shape is for " T font " cross section superstructure of bidirectional stress, because superstructure bottom wing listrium is too thin, construction has increased difficulty, in order to prevent bottom, bottom flange cracking, also set up cracking resistance gauze wire cloth and other working measure, bottom surface, guarantee bottom flange is smooth and do not ftracture.Little the abandoning in current other forms of existing hollow building cover technology Ye Shi Datong District.
In cast-in-situ hollow building roof prior art, there is the hollow building cover with tubulose obturator member pore-forming, evacuation rate is low, saving property is not obvious; With square shape type box component pore-forming, hollow building cover bidirectional stress and the low problem of evacuation rate have been solved, but exist superstructure bottom wing listrium that the defect of Crack Resistance need be set, therefore, develop a kind of employing tubular body combination noggin piece and build up crack resistance cast-in-situ hollow building roof, utilize a plurality of tubular bodies to be combined into noggin piece, instead of squared noggin piece; What while utilizing again many tubular body combinations, adjacent tubes constituted is wavy, and at the wavy middle fluid concrete forming, upper and lower frange plate inner face emersion wave peak value, forms undaform.This kind of floor construction is convenient, concrete injects along wavy place, bottom flange, and speed is fast, efficiency is high, cost is low, by the superstructure bottom flange of prior art flat board easy to crack, improve the wave template that forms cracking resistance, stop superstructure bottom wing listrium and ftracture and cause hidden dangers in project; Top flange is wavy because of what form, is equivalent to increase some riblets, strengthens punch resistant capability, has become the urgent need of hollow building cover art innovation.
Summary of the invention
The object of the present invention is to provide a kind of crack resistance cast-in-situ hollow building roof to build up method, comprise top flange plate (2), beam (3), bottom wing listrium (4) and in superstructure girt strip grid, lay combination noggin piece (5), after carrying out the set aside pre-embedded of pipeline, first cast, containing the bottom flange concrete of undaform, is poured into a mould thereafter beam and top flange concrete and is built up crack resistance hollow building cover (1).Described top flange plate (2) and bottom wing listrium (4) inner face undulate (6), crest value is greater than 50 millimeters, described combination noggin piece (5) is combined side by side by three above inflation tubular bodies (7), and described inflation tubular body adjacent bond position (8) contact closely; When described combination noggin piece (5) combines side by side, the length of each single tube becomes the width (51) of combination obturator (5), the diameter sum of many pipes becomes the length (52) of combination obturator (5), length (52)/width (51) >=0.7; Described inflation tubular body combination noggin piece (5) and steel pipe support isolated part (9) compound action.
More preferred, described waveform bottom flange position, Lamb wave the lowest point thin wing listrium (10) is thick is less than 20 millimeters.
More preferred, described waveform bottom flange position, Lamb wave the lowest point thick wing listrium (101) is thick is greater than 45 millimeters.
More preferred, when described combination obturator (5) combines side by side, the length of each single tube becomes the width (51) that forms obturator (5), the diameter sum of many pipes becomes the length (52) of combination obturator (5), length (52)/width (51) >2 during for grooved hollow building cover.
More preferred; gas courage, valve, gas courage protective bag, valve chock plug or the stifled glue that inflation tubular body in described combination noggin piece (5) is made containing plastic foil, the ring-like fixing collar in inflation tubulose surface, described gas courage protective bag is made with the circular envelope piece material identical with bag stature material containing bag body.
More preferred, described inflation tubular body combination obturator, the middle end position at its adjacent bond position inserts short flat tube HuoPVC garden short tube (11), and caliber is less than 40mm, and length is greater than inflation tubular body adjacent bond position (8) bonding surface length.
More preferred, a steel pipe manufacturing for described support isolated part (9), support isolated part (9) isolation position on the top (91) of noggin piece (5), one end inserts two tubular body adjacent bond positions (92) and another end is combining the outer rim (95) of noggin piece (5) or inserting another two tubular body adjacent bond positions (921). and two end points (96) that support isolated part are supported in superstructure template.
A kind of crack resistance hollow building cover of the present invention comprises top flange plate (2), beam (3) and girder and girt strip, bottom wing listrium (4) and inflation tubulose noggin piece (5); Make full use of the advantage of tubular body, many tubular bodies (7) are combined side by side, many tubular bodies are combined into noggin piece, instead of squared noggin piece; What while utilizing again multitube combination, adjacent tubes was combined to form is wavy, at the wavy middle fluid concrete emersion wave peak value forming, forms bottom flange inner face undaform.Overcome square obturator bottom flange base plate because of flat board defect easy to crack.Crack resistance hollow building cover bottom wing listrium institute's undulate (6), crest value is greater than 50 millimeters, and tubular body adjacent bond position (8) contact is closely; In order to prevent injecting concrete to compressed air, the middle end position at tubular body adjacent bond position inserts short flat tube HuoPVC garden short tube (11), and caliber is less than 40mm, and length is generally greater than mating face.In grooved hollow building cover, the length of obturator and the ratio of width are greater than 2, the length of each single tube is become to the width (51) of combination obturator (5), the diameter sum of many pipes becomes the required length (52) of combination obturator (5), is to be conducive to concrete cast along pipe direction like this at width.A plurality of tubular bodies combine side by side, general with the combination of fibrage strap, prevent length direction distortion, with the steel pipe support isolated part (9) of a band isolation support function, hold up, this steel pipe support isolated part (9) comprises two supports (93) part and an isolation (94) part.The height of two support sections equals diameter and the bottom flange height sum of tubular body, and isolated part length is less than length (52), and isolated part and support section are rectangular.Isolation (94) part of parts (9) is inflated the top (91) of tubulose noggin piece (5) side by side at tubular body, support (93) one end inserts two tubular body adjacent bond positions (92) and another end is inflated the outer rim (95) of tubulose noggin piece (5) or inserts another two tubular body adjacent bond positions (921) at tubular body. and two end points (96) that support isolated part are supported in superstructure template.A plurality of tubular body combinations, are to strengthen deadweight, and tubular body generally adopts light inorganic material goods as plastic tube-shape body, inflation tubular body, many shuttles of polystyrene tubulose body.The lightweight combination obturator (5) forming is emitted in superstructure girt strip grid, carry out the set aside pre-embedded of pipeline, anti-floating is first poured into a mould the bottom flange concrete containing undaform after processing, pour into a mould thereafter beam and top flange concrete and build up crack resistance hollow building cover (1).Therefore crack resistance hollow building cover of the present invention with respect to prior art more save cost, construct more convenient, building cover structure is more reasonable and solved the problem of tubular shape obturator for " T font " stressed cross section, the wavy undaform bottom wing listrium that builds up that simultaneously utilizes tubular body to be combined to form, has effectively solved the hidden dangers in project problem that hollow building cover roof break brings.
Accompanying drawing explanation
Fig. 1 is crack resistance hollow building cover longitdinal cross-section diagram of the present invention.
Fig. 2 is the thin bottom wing listrium of crack resistance hollow building cover of the present invention longitdinal cross-section diagram
Fig. 3 is the thick bottom wing listrium of crack resistance hollow building cover of the present invention longitdinal cross-section diagram.
Fig. 4 is that the present invention combines obturator combination enforcement figure.
Fig. 5 is that the present invention inflates tubular body pattern card.
The specific embodiment
Below in conjunction with accompanying drawing, the present invention is further described.
Fig. 1 is crack resistance hollow building cover of the present invention longitudinal cross-section, be embodied as the upper line of construction formwork (14) at crack resistance hollow building cover, determine main, rib (inferior) beam position, colligation girder and girt strip, girt strip intersects to form grid in length and breadth, lays combination obturator (5) in grid.The aperture that drill diameter is 12mm in template, with iron wire (13), tease the lower rebar of beam (3), through template colligation, on scaffold, carry out anti-floating processing, spread frange plate guiding principle muscle (16), two-way guiding principle muscle (16) is layered on that to support isolated part (9) upper in length and breadth, on vertical or horizontal reinforcing bar (16) and support isolated part (9), first intersects and lays.On crosspoint, carry out part colligation and prevent displacement.Top flange plate (2) steel mesh reinforcement, beam (3) and girder and girt strip reinforcing bar, bottom wing listrium (4) muscle and inflation tubular body combination noggin piece (5) place, and carry out fluid concrete after pipeline set aside pre-embedded, build up crack resistance hollow building cover; This superstructure is the advantage that makes full use of tubular body, and many tubular bodies (7) are combined side by side, utilizes many tubular bodies to be combined into noggin piece, instead of squared noggin piece; What while utilizing again multitube combination, adjacent tubes constituted is wavy, at the wavy middle fluid concrete emersion wave peak value forming, forms undaform (6).Overcome square obturator bottom flange base plate because of flat board defect easy to crack, crack resistance hollow building cover bottom wing listrium institute's undulate (6), crest value is greater than 50 millimeters, and tubular body adjacent bond position (8) contact is closely; In order to prevent injecting concrete to compressed air, at the middle end position at tubular body adjacent bond position, put into the air that short flat tube HuoPVC garden short tube (11) is got rid of compression, caliber is less than 40mm, and length is generally greater than mating face.In the grooved hollow building cover of one-way sealing rib, the length of obturator and the ratio of width are greater than 2, the length of each single tube is become to the width (51) of combination obturator (5), the diameter sum of many pipes becomes the required length (52) of combination obturator (5), is to be conducive to concrete cast along pipe direction like this at width.A plurality of tubular bodies combine side by side, general with fibrage strap (15) combination, prevent length direction distortion, with the steel pipe support isolated part (9) of a band isolation support function, hold up, this steel pipe support isolated part (9) comprises two supports (93) part and an isolation (94) part.The height of two support sections equals diameter and the bottom flange height sum of tubular body, and isolated part length is less than length (52), and isolated part and support section are rectangular.Isolation (94) part of parts (9) is inflated the top (91) of tubulose noggin piece (5) side by side at tubular body, support (93) one end inserts two tubular body adjacent bond positions (92) and another end is combining the outer rim (95) of noggin piece (5) or inserting another two tubular body adjacent bond positions (921). and two end points (96) that support isolated part are supported in superstructure template.A plurality of tubular body combinations; deadweight strengthens; the best inflation tubular body that adopts of tubular body; inflation body is comprised of plastic foil making gas courage, valve, gas courage diaphragm, valve chock plug, inflation pipe fitting fixing collar; fortune inflation at the construction field (site) after gas tube system is done; after inflation with foamed glue or valve chock plug by valve shutoff, prevent that cement mortar is pressed into, open valve and become flat.Using a plurality of inflation bodys (7) to be assembled into combination obturator (5) is emitted in superstructure girt strip grid again.The tubular body of combination noggin piece (5) also can adopt plastic pipe etc.Therefore crack resistance hollow building cover of the present invention with respect to prior art more save cost, construct more convenient, building cover structure is more reasonable and solved the problem of tubular shape obturator for " T font " stressed cross section, the wavy undaform bottom wing listrium that builds up that simultaneously utilizes tubular body to be combined to form, has effectively solved the hidden dangers in project problem that hollow building cover roof break brings.
Fig. 2 is the thin bottom wing listrium of crack resistance hollow building cover of the present invention longitdinal cross-section diagram, and comparing with Fig. 1 is that the thickness at trough (10) position is less than 20mm, does not configure steel bar stress, can apply the little gauze wire cloth of one deck in special engineering in bottom wing listrium.Other technologies content is all identical with Fig. 1 embodiment, at this, is not just repeating, and can be directly with reference to the embodiment of Fig. 1, understands.
Fig. 3 is the thick bottom wing listrium of crack resistance hollow building cover of the present invention longitdinal cross-section diagram, than being that the thickness at trough (101) position is greater than 45mm in bottom wing listrium, configures steel bar stress with Fig. 1.Other technologies content is all identical with Fig. 1 embodiment, at this, is not just repeating, and can be directly with reference to the embodiment of Fig. 1, understands.
Fig. 4 is that the present invention combines obturator combination enforcement figure.With plastic optical fibre braid over braid (15), by a plurality of inflation tubular bodies binding combination obturator arranged side by side members (5), the centre of two pipe junctions is preset, and flat tube He little garden pipe (11) is used as deaeration; In order to solve, combination obturator member (5) is fixing in the grid of superstructure (1), support, isolation, displacement, adopted an integrally formed support isolation position (9), two support units that support isolation position (9) insert in two pipe junctions; Also can in two pipe junctions, insert by a support unit, another unit supports is near the outer (95) of combination obturator member (5); Isolated part (94) is put and is leaned against combination obturator member (5) upper surface (91); Two end points (96) are supported on superstructure construction formwork (14).
Fig. 5 is that the present invention inflates tubular body pattern card.Inflation tubular body is made gas courage (71) by about 80 above plastic foils; valve (72) sealing is arranged on gas courage one end; from inflating pipe end 100mm place, gas courage being put into gas courage protective bag (73); valve stretches out gas courage protective bag; with industrial stitching sewing machine garden type gas courage protective bag sealing (74); job site is enclosed within fixing collar (75) in gas courage protective bag while inflating; after inflation with foamed glue or valve chock plug (76) by valve shutoff; prevent that cement mortar is pressed into, open valve and become flat.Use again a plurality of inflation tubular bodies (7) to be assembled into combination obturator (5).
Finally should be noted that: above embodiment is only in order to illustrate that technical scheme of the present invention is not intended to limit, although the present invention is had been described in detail with reference to above-described embodiment, those of ordinary skill in the field are to be understood that, still can modify or be equal to replacement the specific embodiment of the present invention, and end departs from any modification of spirit and scope of the invention or is equal to replacement, it all should be encompassed in the middle of claim scope of the present invention.
Claims (7)
1. a crack resistance cast-in-situ hollow building roof builds up method, comprise top flange plate (2), beam (3), bottom wing listrium (4) and in superstructure girt strip grid, lay combination noggin piece (5), after carrying out the set aside pre-embedded of pipeline, first cast, containing the bottom flange concrete of undaform, is poured into a mould thereafter beam and top flange concrete and is built up crack resistance hollow building cover (1).Described top flange plate (2) and bottom wing listrium (4) inner face undulate (6), crest value is greater than 50 millimeters, described combination noggin piece (5) is combined side by side by three above inflation tubular bodies (7), and described inflation tubular body adjacent bond position (8) contact closely; When described combination noggin piece (5) combines side by side, the length of each single tube becomes the width (51) of combination obturator (5), the diameter sum of many pipes becomes the length (52) of combination obturator (5), length (52)/width (51) >=0.7; Described inflation tubular body combination noggin piece (5) and steel pipe support isolated part (9) compound action.
2. a kind of crack resistance cast-in-situ hollow building roof as claimed in claim 1 builds up method, it is characterized in that described waveform bottom flange position, Lamb wave the lowest point thin wing listrium (10) is thick to be less than 20 millimeters.
3. a kind of crack resistance cast-in-situ hollow building roof as claimed in claim 1 builds up method, it is characterized in that described waveform bottom flange position, Lamb wave the lowest point thick wing listrium (101) is thick to be greater than 45 millimeters.
4. a kind of crack resistance cast-in-situ hollow building roof as claimed in claim 1 builds up method, it is characterized in that when described combination obturator (5) combines side by side, the length of each single tube becomes the width (51) that forms obturator (5), the diameter sum of many pipes becomes the length (52) of combination obturator (5), length (52)/width (51) >2 during for grooved hollow building cover.
5. a kind of crack resistance cast-in-situ hollow building roof as claimed in claim 1 builds up method; it is characterized in that gas courage, valve, gas courage protective bag, valve chock plug or stifled glue, the ring-like fixing collar in inflation tubulose surface that the inflation tubular body in described combination noggin piece (5) is made containing plastic foil, described gas courage protective bag is made with the circular envelope piece material identical with bag stature material containing bag body.
6. a kind of crack resistance cast-in-situ hollow building roof as claimed in claim 1 builds up method, it is characterized in that described inflation tubular body combination obturator, the middle end position at its adjacent bond position inserts short flat tube HuoPVC garden short tube (11), caliber is less than 40mm, and length is greater than inflation tubular body adjacent bond position (8) bonding surface length.
7. a kind of crack resistance cast-in-situ hollow building roof as claimed in claim 1 builds up method, it is characterized in that a steel pipe manufacturing for described support isolated part (9), support isolated part (9) isolation position on the top (91) of noggin piece (5), one end inserts two tubular body adjacent bond positions (92) and another end is combining the outer rim (95) of noggin piece (5) or inserting another two tubular body adjacent bond positions (921), and two end points (96) that support isolated part are supported in superstructure template.
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| CN201310511231.4A CN103541480B (en) | 2013-10-25 | 2013-10-25 | A kind of crack resistance cast-in-situ hollow building roof builds up method |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105421663A (en) * | 2015-12-23 | 2016-03-23 | 王本淼 | Ribbed steel engraved mesh for cast-in-place cavity floor |
| CN109025294A (en) * | 2018-07-28 | 2018-12-18 | 福建江夏学院 | A kind of post-cast strip inflatable arc angle rectangular section hose side form installs construction method |
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| CN2584695Y (en) * | 2002-12-09 | 2003-11-05 | 北京市建筑工程研究院 | Structural ribbon strip in prestressed hollow board |
| CN1532358A (en) * | 2003-03-21 | 2004-09-29 | 邱则有 | Light tube for filling steel reinforced concrete |
| CN2858826Y (en) * | 2005-11-02 | 2007-01-17 | 王占林 | Hollow pipe installation structure in hollow casting beam-free reinforced concrete floor slab |
| CN101324093A (en) * | 2008-07-17 | 2008-12-17 | 王军艇 | Combined type relief component cast-in-situ hollow building roof and construction method thereof |
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2013
- 2013-10-25 CN CN201310511231.4A patent/CN103541480B/en active Active
Patent Citations (5)
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| JPH09105170A (en) * | 1995-10-09 | 1997-04-22 | Taiko:Kk | Constructing method of light-weight building and light-weight building with heat-sheilding wall |
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| CN1532358A (en) * | 2003-03-21 | 2004-09-29 | 邱则有 | Light tube for filling steel reinforced concrete |
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Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105421663A (en) * | 2015-12-23 | 2016-03-23 | 王本淼 | Ribbed steel engraved mesh for cast-in-place cavity floor |
| CN109025294A (en) * | 2018-07-28 | 2018-12-18 | 福建江夏学院 | A kind of post-cast strip inflatable arc angle rectangular section hose side form installs construction method |
| CN109025294B (en) * | 2018-07-28 | 2020-10-23 | 福建江夏学院 | Post-cast strip inflatable arc-angle rectangular hose side form erecting construction method |
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