The application is filing date December in 2012 13, Application No. 2012105365686, and entitled shed deckhead is tied
The divisional application of the Chinese invention patent application of structure and construction method and concrete structural cavities inner membrance.
Summary of the invention
The present invention provides a kind of concrete structural cavities inner membrance;The present invention also provides for a kind of garage using concrete structural cavities inner membrance
Top board structure and shed deckhead construction method.
The invention provides a kind of shed deckhead structure using concrete structural cavities inner membrance, it includes all the most successively
For the upper strata top board of reinforced concrete structure, waffle beam and lower floor's top board, at upper strata top board, lower floor's top board and waffle beam surround
Concrete structural cavities inner membrance is placed in closed cavity;Described concrete structural cavities inner membrance, it includes at least one piece of inner membrane member, at inner membrance
Assembly surface is provided with outer layer fireproof coating, and at least one PVC fixes housing;Described inner membrane member is that density is more than 15Kg/
m3 The solid polystyrene foam block of flame retardant type.
The concrete feature of this programme also has, and described inner membrane member is two pieces, and it is two that described PVC fixes housing.
Each PVC fixes housing side with rectangle baffle plate, baffle plate width 10cm ensure that inner membrane member install after two-by-two
Spacing 10cm, will not occurred level displacement in work progress;Inner membrane member top is laid and is overlapped firm two at waffle beam
Anti-floating reinforcing steel bar, Anti-floating reinforcing steel bar specification is the secondary screw-thread steel muscle that diameter is not less than 14mm, inner membrane member when preventing concreting
There is vertical displacement;Gap equal placing concrete tamping between the gap of adjacent inner membrane member, inner membrane member and waffle beam.
The size of inner membrane member is long 950 × wide by 450 × high 430mm or long 750 × wide by 450 × high 430 mm;Inner membrance
It is 25mm with waffle beam gap,
To ensure to meet thickness of concrete cover;The waffle beam arrangement corresponding with described inner membrane member is 1000
× 1000mm, the continuous groined type of 1000mm × 800mm pattern are arranged.
Present invention also offers a kind of concrete structural cavities inner membrance, it includes at least one piece of inner membrane member, at inner membrane member table
Face is provided with outer layer fireproof coating, and at least one PVC fixes housing;Described inner membrane member is that density is more than 15Kg/m3 Fire-retardant
The solid polystyrene foam block of type.
The concrete feature of this programme also has, and described inner membrane member is two pieces, and it is two that described PVC fixes housing.
Each PVC fixes housing side with rectangle baffle plate, baffle plate width 10cm ensure that inner membrane member install after two-by-two
Spacing 10cm, will not occurred level displacement in work progress;Inner membrane member top is laid and is overlapped firm two at waffle beam
Anti-floating reinforcing steel bar, inner membrane member generation vertical displacement when preventing concreting.
Inner membrane member basic size (length) is 950 × 450 × 430mm, 750 × 450 × 430 mm.
When concreting is vibrated, inner membrane member will not be destroyed, and solves in current cavity structure filling member work progress
The problem being easily broken damage;Solid eps foam block outer layer arranges fireproof coating.
Present invention also offers a kind of shed deckhead construction method, it comprises the steps: 1, lays base plate template;
2, inner membrane member installation site is determined;3, inner membrane member is installed;4, colligation fixing Anti-floating reinforcing steel bar;5, concreting.
Present invention also offers a kind of shed deckhead construction method, it comprises the steps:
1, base plate template is laid;
1) template and support system should be designed calculating according to actual loading and construction height, and inner membrance load can be disregarded;
2) the full hall of end template is laid, and should individually should lay by design requirement arch camber, post-cast strip position template during support shuttering;
2, inner membrance installation site is determined;Base plate and girt strip reinforcing bar binding determine inner membrance installation site, according to construction after completing
The axial dimension of drawing, ejects the position line outside girt strip sideline i.e. inner membrance, to ensure that inner membrance is the most in place;Must check before snap the line
Engineering axis overall size, confirm errorless after can snap the line;
3, inner membrance is installed;
1) carefully comparison inner membrance arranges drawing, carries out mounting arrangements according to the inner membrance position line, prevents misplaced;
2) should conscientiously check before inner membrance is in place that base plate and girt strip cushion block of concrete bar protective layer the most all install;
3), after inner membrance is in place, should ensure that the size between inner membrance and girt strip, between inner membrance and inner membrance meets design requirement;
4, colligation fixing Anti-floating reinforcing steel bar;
1) Anti-floating reinforcing steel bar presses G-Design and layout;
2) Anti-floating reinforcing steel bar all should overlap at girt strip;
3) Anti-floating reinforcing steel bar is firm with falsework drawknot at girt strip and inner membrance gap location iron wire;
5, concreting;
1) concrete requires preparation according to design, stone and the medium sand that aggregate selects particle diameter to be 5~20mm, slump >=
180;
2), during casting concrete, first pour stigma and Vierendeel girder, then it is mixed to pour girt strip and floorslab concrete, girt strip and floor
Solidifying soil is carried out in a direction simultaneously;Should first fill interior intermembrane space during casting concrete and fill girt strip again, to guarantee that inner membrance gap size accords with
Close design requirement;Girt strip and two positions, inner membrance gap use two poker vibrators to vibrate simultaneously, it is ensured that base plate is closely knit.
The invention has the beneficial effects as follows:
1, inner membrance uses density more than 15Kg/m3 The solid polystyrene foam block of flame retardant type, its comprcssive strength meets coagulation
Pressure requirements when soil pours, will not damage rupture in work progress, it is to avoid occur that concrete infiltration is filled into the sky ruptured
Phenomenon in cavity configuration, reduces concrete amount, and cost of material of the present invention is low, reduces comprehensive cost.
2, flexible design is in addition to basic size, also can be nonstandard with on-site actual situations "one off" production different according to design drawing
Type inner membrance, solves top board boundary dimensions very well and does not fixes and special-shaped border inner membrance filling problem, and the scope of application is wider.
3, sound insulation, heat insulation employing density are more than 15Kg/m3 The solid polystyrene foam block of flame retardant type has good guarantor
Temperature, soundproof effect.
4, light weight inner membrance light weight, with 15Kg/m3 As a example by the solid polystyrene foam block of flame retardant type, single inner membrance group
Part weight is at about 2.3 3.1Kg, and during template support design, load can be disregarded, and on-the-spot transport is installed light, saves machinery, people
Expenses of labour is used.
5, construction is fast, duration short construction technology is simple, after floor bottom mould and reinforcing bar are completed, directly lays inner membrance,
Rear colligation Anti-floating reinforcing steel bar.After concreting, inner membrance combines with concrete, need not tear inner membrance open, the reduction of erection time,
Save material and labour cost.
Embodiment three:
As shown in Figure 4, a kind of shed deckhead construction method, it comprises the steps:
1, base plate template is laid;
1) template and support system should be designed calculating according to actual loading and construction height, and inner membrance load can be disregarded;
2) the full hall of end template is laid, and should individually should lay by design requirement arch camber, post-cast strip position template during support shuttering;
2, inner membrance installation site is determined;Base plate and girt strip reinforcing bar binding determine inner membrance installation site, according to construction after completing
The axial dimension of drawing, ejects the position line outside girt strip sideline i.e. inner membrance, to ensure that inner membrance is the most in place;Must check before snap the line
Engineering axis overall size, confirm errorless after can snap the line;
3, inner membrance is installed;
1) carefully comparison inner membrance arranges drawing, carries out mounting arrangements according to the inner membrance position line, prevents misplaced;
2) should conscientiously check before inner membrance is in place that base plate and girt strip cushion block of concrete bar protective layer the most all install;
3), after inner membrance is in place, should ensure that the size between inner membrance and girt strip, between inner membrance and inner membrance meets design requirement;
4, colligation fixing Anti-floating reinforcing steel bar;
1) Anti-floating reinforcing steel bar presses G-Design and layout;
2) Anti-floating reinforcing steel bar all should overlap at girt strip;
3) Anti-floating reinforcing steel bar is firm with falsework drawknot at girt strip and inner membrance gap location iron wire;
5, concreting;
1) concrete requires preparation according to design, stone and the medium sand that aggregate selects particle diameter to be 5~20mm, slump >=
180;
2), during casting concrete, first pour stigma and Vierendeel girder, then it is mixed to pour girt strip and floorslab concrete, girt strip and floor
Solidifying soil is carried out in a direction simultaneously;Should first fill interior intermembrane space during casting concrete and fill girt strip again, to guarantee that inner membrance gap size accords with
Close design requirement;Girt strip and two positions, inner membrance gap use two poker vibrators to vibrate simultaneously, it is ensured that base plate is closely knit.