CN1114738C - In-situ cast hollow reinforced concrete slab pre-provided with hollow hard thin-wall members and its construction method - Google Patents

In-situ cast hollow reinforced concrete slab pre-provided with hollow hard thin-wall members and its construction method Download PDF

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Publication number
CN1114738C
CN1114738C CN 99115648 CN99115648A CN1114738C CN 1114738 C CN1114738 C CN 1114738C CN 99115648 CN99115648 CN 99115648 CN 99115648 A CN99115648 A CN 99115648A CN 1114738 C CN1114738 C CN 1114738C
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hard thin
members
cavity
cast
reinforcing steel
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CN 99115648
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CN1297095A (en
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邱则有
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邱则有
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Abstract

The present invention relates to a cast-in-situ reinforcing steel bar concrete hollow board of a preset cavity hard thin-walled member, which is composed of reinforcing steel bars, concrete and cavity hard thin-walled members the reinforcing steel bars, wherein the cavity hard thin-walled members are positioned by fixed positioning members. A construction method comprises the following steps: erecting a mould, laying the reinforcing steel bars or placing meshes of the reinforcing steel bars, and pre-burying the reinforcing steel bars or the meshes of the reinforcing steel bars in the concrete; placing a cavity thin-wall pipe (box), and making hydroelectric pipelines pass through the thin-wall pipe (box) or pre-burying the hydroelectric pipelines; positioning and banding the reinforcing steel bars, fixedly positioning the vertical direction and the horizontal direction of the cavity hard thin-wall pipe (box); casing and vibrating the concrete, maintaining the concrete and removing the mould, and thereby, the hollow board of the present invention is formed. The present invention has the advantages of convenient construction, high safety and reliability, wide applicability, material saving, low cost, etc.

Description

In-situ cast hollow reinforced concrete slab pre-provided with hollow hard thin-wall members and job practices thereof

The invention belongs to a kind of cast-in-situ reinforcing steel bar concrete hollow slab, mainly be applicable to the floor of industry and civil building, also can be applicable in the cast-in-situ reinforcing steel bar concrete hollow slabs such as hollow bridges, hollow road surface, basic hollow sole, basic hollow pile, hollow stair, hollow step, hollow shear wall slab.

At present, cast-in-place building (roofing, basis) plate (containing prestressed slab) adopts solid slab, solid slab concrete consumption is many, from great, amount of reinforcement is big, span is little, cap is big, has increased post and basic load simultaneously, and is very uneconomical.Cast-in-place rib ellbeam plate body exposes a lot of primary and secondary beams or little girt strip at the bottom of tying up to plate, and is not attractive in appearance, needs furred ceiling, can not carry out large bay and separate, and is unfavorable for the installation of water power air conditioning piping.Beam has reduced headway.Because of top board is very thin, sound insulation is poor, so the beam slab system is uneconomical, and function of use is poor.Precast hollow slab has and is suitable for little, the easy crack of span, easy to leak, structural integrity is poor, can only be that one-way slabs is used, and earthquake resisting performance is poor, the distortion that causes of factor such as basic differential settlement irresistibly, be used for multilayer, little span building more, can not be used for highrise building.

In the patent documentation of notification number CN2228503Y, disclose a kind of cast-in-place hollow slab with permanent fetal membrane, this In-situ cast concrete board is " containing hollow fetal membrane in the In-situ cast concrete board inside of making ", and this cast-in-place hollow slab with permanent loose tool has following shortcoming:

1, cast-in-place difficult forming, unreasonable structure.Described in prospectus and accompanying drawing, hollow mould is when the concrete moulding by casting, and loose tool makes concrete upper strata attenuate because of cast vibration concrete slurry causes the loose tool come-up, and concrete plate upper strata is a pressure zone, and structure tension performance is unreasonable.

2, cavity is not sealed at the hollow mould two ends, and the concrete slurry easily enters hollow mould and makes the decline of hollowcore slab hollow rate during the concrete moulding.

3, hollow mould is as described in prospectus and the accompanying drawing, and cross sectional shape is trapezoidal, square, circular or other shape.Arranged direction is the unidirectional cloth loose tool, and the concrete hollow board of formation is an one-way slabs, is single load bearing under construction, can not make two-way slab and use.Can not satisfy the needs of the multidirectional stressed form of structure of building.

4, because disclosed hollowcore slab belongs to the Cast-in-place concrete member, adopt hardboard, rigid foam or potter's clay etc. to make hollow mould, the former two has reduced the fireproof performance of hollowcore slab building, latter's potter's clay potter's clay pug when concrete formation is entered in the concrete by the softening back of bubble potter's clay, the intensity of concrete reduces significantly, hardboard bubble after-tack loose tool easily subsides, and increases the concrete amount.

U.S. Pat 3430912, it discloses a kind of fixed system and stay hook of plate, in the accompanying drawing 1 of this patent, shown the application of this invention in light reinforced concrete hollow board construction, simultaneously, this figure also discloses a kind of structure and structure of cast-in-situ reinforcing steel bar concrete hollow slab, and it is to include reinforcing bar, concrete, fiber paper tube, stationary positioned member on a base plate, and the Cast-in-place concrete bonding by cast between them forms integrated hollow plate.This cassette ceiling is same because cavity is not sealed at fiber paper tube two ends, and the concrete slurry easily enters in the pipe during concrete moulding, and the hollowcore slab hollow rate is descended, and its fireproof performance is poor simultaneously, and the bubble after-tack is easily subsided, and increases the concrete consumption.

The objective of the invention is to overcome the prior art shortcoming, provide a kind of construction simple and easy, applicability is wide, stress performance is reasonable, quality safety is reliable, and is rational in infrastructure, and can effectively guarantee in-situ cast hollow reinforced concrete slab pre-provided with hollow hard thin-wall members and job practices thereof that design strength requires.

In-situ cast hollow reinforced concrete slab pre-provided with hollow hard thin-wall members of the present invention, comprise reinforcing bar, concrete, be preset at cavity hard thin-wall members, stationary positioned member in the reinforcing bar, the cavity hard thin-wall members is characterized in that by stationary positioned member location described cavity hard thin-wall members is the sealed hollow member.

Feature of the present invention is that also described Cavity structural member is single sealed hollow member.

Feature of the present invention is that also described Cavity structural member is the enclosed cavity combined member that a plurality of open type hollow unit combination rear enclosed both ends opens form.

Feature of the present invention is that also described cavity hard thin-wall members is cavity hard thin-wall tube or cavity hard thin-wall box, and its cross sectional shape is circular, square or other is special-shaped.

Feature of the present invention also be to have between the two ends of described cavity hard thin-wall members and member between rib between the Cast-in-place concrete end that intersects of the vertical rib of Cast-in-place concrete.

Feature of the present invention also is between the Cast-in-place concrete end at described cavity hard thin-wall members two ends rib on same straight line, constitute with the crossing elongated end of Cast-in-place concrete of the vertical rib of many Cast-in-place concretes between rib.

Feature of the present invention is that also rib has at least two to be parallel to each other between the elongated end of described Cast-in-place concrete.

Feature of the present invention is that also the pipe of described cavity hard thin-wall members or box wall are water-fast hard material, and hard material is Cement fibre, organic/inorganic composite material, steel, plastics or hard paper.

Feature of the present invention also is unidirectional being arranged in parallel of cavity axis of described single cavity hard thin-wall tube, or cross arrangement in length and breadth, or multidirectional arrangement.

Feature of the present invention is that also the geometric center point connecting line of described cavity hard thin-wall box forms netted.

Feature of the present invention is that also described cavity hard thin-wall members can be arranged on top or middle part or bottom or the portion or portion position on the upper side on the lower side of hollowcore slab.

Feature of the present invention is that also described stationary positioned member is the reinforcing bar that bears down on one, fastening iron wire and locating piece.

Feature of the present invention is that also this hollowcore slab is applied to floor, hollow bridges, hollow road surface.

The job practices of in-situ cast hollow reinforced concrete slab pre-provided with hollow hard thin-wall members of the present invention is:

(1) formwork is laid reinforcing bar or is laid reinforced mesh, installs in the concrete pre-buried;

(2) lay cavity light-wall pipe (box), hydroelectric line can be worn light-wall pipe (box) or pre-buried;

(3) reinforcing bar location colligation, cavity horniness thin-walled tube (box) above-below direction and horizontal direction stationary positioned;

(4) vibrate concrete, maintenance, form removal of cast forms in-situ cast hollow reinforced concrete slab pre-provided with hollow hard thin-wall members of the present invention.

Below in conjunction with description of drawings the present invention is elaborated.

Fig. 1 is the perspective view of inventive embodiments one.

Fig. 2 is the perspective view of inventive embodiments two.

Fig. 3 is the perspective view of inventive embodiments three.

Fig. 4 is cavity hard thin-wall members embodiment one structural representation.

Fig. 5 is cavity hard thin-wall members embodiment two structural representations.

Fig. 6 is the schematic diagram of expression cavity hard thin-wall members stationary positioned form embodiment one.

Fig. 7 is the schematic diagram of expression cavity hard thin-wall members stationary positioned form embodiment two.

Fig. 8 can make things convenient for the pre-buried hollowcore slab finished product user mode schematic diagram of water, electric line and airduct for expression cavity hard thin-wall members.

As Figure 1-3, the present invention is made up of reinforcing bar 1, concrete 2, the cavity hard thin-wall members 3 that is preset in the reinforcing bar, and before the concrete cast, cast cavity hard thin-wall members 3 is by stationary positioned member 4 location.Described cavity hard thin-wall members can be cavity hard thin-wall tube or cavity hard thin-wall box, and its cross sectional shape can be circular, square or other is special-shaped, as shown in Figure 4, is orthohexagonal.The pipe of described cavity hard thin-wall members (box) wall is water-fast hard material, can be Cement fibre stereoplasm tube (box) or organic/inorganic composite material horniness thin-walled tube (box) or steel pipe (box) or plastic pipe (box) or hard paper tube (box).Described cavity hard thin-wall members can be the enclosed cavity combined member of single sealed hollow member or the formation of a plurality of open type hollow unit combination rear enclosed both ends open, as shown in Figure 5.Unidirectional being arranged in parallel of cavity axis of described cavity hard thin-wall tube, or cross arrangement in length and breadth, or multidirectional arrangement, as shown in Figure 1, 2.The embodiment that Fig. 1-3 provides, cavity hard thin-wall members all are arranged on the concrete hollow board middle part, fit up cabling in order to satisfy, and some specific (special) requirements, and the cavity hard thin-wall members also can be arranged on top or bottom or the portion or portion position on the upper side on the lower side of hollowcore slab.

Fig. 6, Fig. 7 have provided the stationary positioned embodiment of cavity hard thin-wall members, shown in Fig. 6,7, the stationary positioned member 4 of cavity hard thin-wall members can be Y type bearing and bearing and closes and buckle 4-1,4-2, or be " n " shape iron wire 4-3, or be the reinforcing bar 4-4 that bears down on one, fastening iron wire 4-5 and locating piece 4-6.Also can adopt other members and method control cavity hard thin-wall members to pour into a mould buoyancy produces in the process of vibrating fluctuating or moving horizontally, to avoid cavity to form irregular or not meet designing requirement, to guarantee hollowcore slab intensity and quality at concrete.For example adopt locating bar 4-7 control mobile, realize the location, before the concrete cast, be inserted between the cavity hard thin-wall members, not dried preceding taking-up the after the concrete cast.

In-situ cast hollow reinforced concrete slab pre-provided with hollow hard thin-wall members of the present invention is according to different designs Requirement can be formed with beam porous plate, no beam porous plate, no cap porous plate, dark beam porous plate, Porous soleplate, hollow pile, stair, step, shear wall or above combination. Have as follows Advantage:

1, easy construction, safety, reliable, fast, construction cost is low.

2, applicability is wide, is applicable to building, road surface, the basis of various spans and various loads. Multilayer and temperature field as large span, big load, large space have more superiority.

3, can effectively guarantee designing requirement and requirement of strength.

4, save material, reduce comprehensive cost, the one, the reinforced concrete cost reduces; The 2nd, template Loss reduces; The 3rd, can utilize the pre-buried water of cavity hard thin-wall members, electric line, airduct (as Shown in Figure 8), can save water, electric line, airduct sleeve pipe, save outer decoration expense.

Claims (13)

1, a kind of cavity hard thin-wall members formula cast-in-situ reinforcing steel bar concrete hollow slab that presets, it comprises reinforcing bar, concrete, is preset at cavity hard thin-wall members, stationary positioned member in the steel bar concrete, the cavity hard thin-wall members is characterized in that by stationary positioned member location described cavity hard thin-wall members is the sealed hollow member.
2,, it is characterized in that described Cavity structural member is single sealed hollow member according to the cavity hard thin-wall members formula that the presets cast-in-situ reinforcing steel bar concrete hollow slab described in the claim.
3, the cavity hard thin-wall members formula cast-in-situ reinforcing steel bar concrete hollow slab that presets according to claim 1 is characterized in that described Cavity structural member is the enclosed cavity combined member that a plurality of open type hollow unit combination rear enclosed both ends opens form.
4, the cavity hard thin-wall members formula cast-in-situ reinforcing steel bar concrete hollow slab that presets according to claim 1 is characterized in that described cavity hard thin-wall members is cavity hard thin-wall tube or cavity hard thin-wall box, and its cross sectional shape is circular, square or other is special-shaped.
5, according to claim 1,2, the 3 or 4 described cavity hard thin-wall members formula cast-in-situ reinforcing steel bar concrete hollow slabs that preset, it is characterized in that having between the two ends of described cavity hard thin-wall members and member between rib between the Cast-in-place concrete end that intersects of the vertical rib of Cast-in-place concrete.
6, the cavity hard thin-wall members formula cast-in-situ reinforcing steel bar concrete hollow slab that presets according to claim 5, it is characterized in that between the Cast-in-place concrete end at described cavity hard thin-wall members two ends rib on same straight line, constitute with the crossing elongated end of Cast-in-place concrete of the vertical rib of many Cast-in-place concretes between rib.
7, the cavity hard thin-wall members formula cast-in-situ reinforcing steel bar concrete hollow slab that presets according to claim 6 is characterized in that rib has at least two to be parallel to each other between the elongated end of described Cast-in-place concrete.
8, according to claim 1,2, the 3 or 4 described cavity hard thin-wall members formula cast-in-situ reinforcing steel bar concrete hollow slabs that preset, the pipe or the box wall that it is characterized in that described cavity hard thin-wall members are water-fast hard material, and hard material is Cement fibre, organic/inorganic composite material, steel, plastics or hard paper.
9, according to claim 1,2, the 3 or 4 described cavity hard thin-wall members formula cast-in-situ reinforcing steel bar concrete hollow slabs that preset, it is characterized in that unidirectional being arranged in parallel of cavity axis of described single cavity hard thin-wall tube, or cross arrangement in length and breadth, or multidirectional arrangement.
10, according to claim 1,2, the 3 or 4 described cavity hard thin-wall members formula cast-in-situ reinforcing steel bar concrete hollow slabs that preset, it is characterized in that the geometric center point connecting line of described cavity hard thin-wall box forms netted.
11,, it is characterized in that described cavity hard thin-wall members can be arranged on top or middle part or bottom or the portion or portion position on the upper side on the lower side of hollowcore slab according to claim 1,2, the 3 or 4 described cavity hard thin-wall members formula cast-in-situ reinforcing steel bar concrete hollow slabs that preset.
12, according to claim 1,2, the 3 or 4 described cavity hard thin-wall members formula cast-in-situ reinforcing steel bar concrete hollow slabs that preset, it is characterized in that described stationary positioned member is the reinforcing bar that bears down on one, fastening iron wire and locating piece.
13, according to claim 1,2, the 3 or 4 described cavity hard thin-wall members formula cast-in-situ reinforcing steel bar concrete hollow slabs that preset, it is characterized in that this hollowcore slab is applied to floor, hollow bridges, hollow road surface.
CN 99115648 1999-11-22 1999-11-22 In-situ cast hollow reinforced concrete slab pre-provided with hollow hard thin-wall members and its construction method CN1114738C (en)

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Application Number Priority Date Filing Date Title
CN 99115648 CN1114738C (en) 1999-11-22 1999-11-22 In-situ cast hollow reinforced concrete slab pre-provided with hollow hard thin-wall members and its construction method

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CN1114738C true CN1114738C (en) 2003-07-16

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Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN101311440A (en) * 2004-11-02 2008-11-26 邱则有 Cast-in-place reinforced concrete or prestressed reinforced concrete hollow slab
WO2020141564A1 (en) * 2019-01-03 2020-07-09 Bahavar Ali Two way hallow-core slab

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WO2003029573A1 (en) * 2001-09-30 2003-04-10 Zeyou Qiu An hollow formwork for a insitu reinforcing concrete structure
CN101240624A (en) * 2002-12-22 2008-08-13 邱则有 Cast-in-situ reinforcing steel bar concrete floor
CN100467804C (en) * 2003-05-06 2009-03-11 邱则有 Light base for cast-in-place steel reinforced concrete hollow slab
CN100422460C (en) * 2004-05-10 2008-10-01 邱则有 Lightweight hollow slab made from concrete reinforced by steel bar cast in-site
CN100429365C (en) * 2004-05-10 2008-10-29 邱则有 Hollow slab made from concrete reinforced by steel bar cast in-site
CN100467785C (en) * 2004-05-10 2009-03-11 邱则有 Hollow slab made from concrete reinforced by steel bar cast in-site
CN1295408C (en) * 2005-01-12 2007-01-17 姜胜清 Construction for steel bar reinforced hollow concrete roof cast-in-situs
CN100427702C (en) * 2005-03-29 2008-10-22 朴圣德 Paneling for construction and arc top cover of gas generation tank using the same
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
CN101818574A (en) * 2010-03-23 2010-09-01 南通宏华建筑安装有限公司 Construction method for self-stable high-strength thin-wall pipe internal mold cast-in-place hollow slab
CN101806112B (en) * 2010-04-21 2011-06-29 中南大学 Preparation method of cast-in-situ concrete hollow slab
CN102304952B (en) * 2011-07-07 2014-01-15 孙广亮 Inner partition board formed by cast-in-situ and manufacture method thereof
CN103669711A (en) * 2012-09-21 2014-03-26 王淑华 Combined type wall board
CN104775425B (en) * 2013-10-23 2016-09-07 叶长青 A kind of construction method of high-bearing capacity expansion pile
CN104264881A (en) * 2014-09-16 2015-01-07 福州大学 Magnesium cement lightweight aggregate concrete hollow box board
CN104695618B (en) * 2015-03-04 2017-12-29 清华大学建筑设计研究院有限公司 Concave-board and its forming method with embedding pipe fittingses
CN104929294A (en) * 2015-06-04 2015-09-23 扬州大学 Concrete composite plate with built-in cross hollow square steel pipes
CN106493836A (en) * 2016-10-27 2017-03-15 周秘起 The technique that Light trabses are produced with paper tube
CN107379226B (en) * 2017-08-23 2020-06-23 广东班高得绿色建工科技有限公司 Manufacturing method of multifunctional assembled prefabricated hollow building module
CN107471427B (en) * 2017-08-23 2020-06-23 广东班高得绿色建工科技有限公司 Construction method of prefabricated hollow floor slab

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN101311440A (en) * 2004-11-02 2008-11-26 邱则有 Cast-in-place reinforced concrete or prestressed reinforced concrete hollow slab
WO2020141564A1 (en) * 2019-01-03 2020-07-09 Bahavar Ali Two way hallow-core slab

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