CN106481068A - The construction method of high-order cast-in-place concrete structure formwork system - Google Patents

The construction method of high-order cast-in-place concrete structure formwork system Download PDF

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Publication number
CN106481068A
CN106481068A CN201610913114.4A CN201610913114A CN106481068A CN 106481068 A CN106481068 A CN 106481068A CN 201610913114 A CN201610913114 A CN 201610913114A CN 106481068 A CN106481068 A CN 106481068A
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CN
China
Prior art keywords
bar
template
floor
formwork
full hall
Prior art date
Application number
CN201610913114.4A
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Chinese (zh)
Inventor
程选生
冯欢
王菲菲
陈佳
张小燕
马亮
李国亮
李德
周迎超
李鑫蕾
刘海波
周欣海
Original Assignee
兰州理工大学
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Application filed by 兰州理工大学 filed Critical 兰州理工大学
Priority to CN201610913114.4A priority Critical patent/CN106481068A/en
Publication of CN106481068A publication Critical patent/CN106481068A/en

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    • EFIXED CONSTRUCTIONS
    • E04BUILDING
    • E04GSCAFFOLDING; FORMS; SHUTTERING; BUILDING IMPLEMENTS OR OTHER BUILDING AIDS, OR THEIR USE; HANDLING BUILDING MATERIALS ON THE SITE; REPAIRING, BREAKING-UP OR OTHER WORK ON EXISTING BUILDINGS
    • E04G11/00Forms, shutterings, or falsework for making walls, floors, ceilings, or roofs

Abstract

The construction method of high-order cast-in-place concrete structure formwork system, for high-order cast-in-place concrete structure formwork engineering field, its step is:(1) material required for high-order cast-in-place concrete structure formwork system, instrument and apparatus etc. are got out before constructing;(2) according to the measurement and positioning unwrapping wire of construction drawing and job site, and determine full hall template bracket post (1) bottom foundation bearing capacity;Then scaffold (2) is set up using unique construction method, put bar of sweeping the floor (3), full hall template bracket post (1) is erected on steel pipe cushion block (4), set up top horizontal bar (5) and by-level bar (6), bridging (8) is set, and corresponding connecting portion is buckled using fastener;(3) every layer of support perimeter and structural frames trestle are carried out support body drawknot, forms thick pillar device;(4) setting up after firm and surrounding stupefied beam (10) is connected firmly with support after support carries out model sheetinstallat.

Description

The construction method of high-order cast-in-place concrete structure formwork system

Technical field

The present invention relates to the technical field of construction of high-order cast-in-place concrete structure formwork system.

Background technology

High-order cast-in-place concrete structure formwork is the building of large-scale frame structure with height up to 5 meters and above steel pipe Erection and the general designation of form work engineering construction.At present, constantly expand and the carrying gradually of industrial benefit in China architectural engineering scale Under the background favourable for rising, the construction industry of high-order cast-in-place concrete structure formwork system is also from initial small lot, customized type mould Formula develops into the brand-new looks of present high-volume, scale.Its scale is bigger, correspondingly its high form-tie assembly in construction Rigidity, intensity, stability and security requirement more and more higher, the difficulty of formwork construction are increasing.Moreover, high-supported formwork Operation is set up as a general assignment engineering that difficulty of construction is big, technical requirements are high, danger coefficient is strong, not only easily concentrate Property outburst security incident, and possess the unstability of safety failure, randomness, the notable feature such as sudden, be particularly me State's high-supported formwork engineering generally existing that high form-tie assembly is unreasonable, construction technology is immature and formwork experience not enough etc. is Row problem, causes template support top engineering collapse accident occur, the safety of this not only entail dangers to building, but also can cause life The loss of property.Therefore, safe and stable, the association of whole building engineering system, in order to ensure the quality safety of structure construction, are ensured Allocation and transportation turn and people safety and health, the construction method of high-order cast-in-place concrete structure formwork system should cause enough Pay attention to.

Content of the invention

It is an object of the invention to provide a kind of construction method of high position cast-in-place concrete structure formwork system.

The present invention is the construction method of high-order cast-in-place concrete structure formwork system, and its step is:

(1) material required for high-order cast-in-place concrete structure formwork system, instrument and apparatus are got out before constructing;

(2) according to the measurement and positioning unwrapping wire of construction drawing and job site, and determine full 1 bottomland of hall template bracket post Base bearing capacity;Then scaffold 2 is set up, full hall support bracket system is set up using steel pipe, put bar 3 of sweeping the floor, placing steel tubes pad Block 4, and full hall template bracket post 1 is erected on steel pipe cushion block 4, wherein, the load-bearing connected mode of full hall template bracket post 1 For adjustable bracket, then full hall template bracket post 1 is buckled with bar 3 of sweeping the floor;The top of full hall template bracket post 1 should be along vertical One top horizontal bar (5) is laterally respectively set;The spacing that sweeps the floor between bar 3 and top horizontal bar 5, is meeting stencil design institute really Under conditions of fixed 6 stride requirements of by-level bar, determination step pitch is distributed equally, at each step pitch, vertically and horizontally respectively sets one Road by-level bar 6;The sweep the floor end of bar 3, top horizontal bar 5 and by-level bar 6 is all completely embedded with surrounding building; Full hall template bracket post 1 is connected using sleeve couple 7, and the banjo fixing butt jointing of an adjacent two full template bracket post 1 must not be same In one step, the distance that banjo fixing butt jointing vertically staggers cannot be less than 500mm, and connector center is not more than the 1/3 of step pitch away from host node; Full hall template bracket post 1 should set bridging 8 from the bottom to top in outer periphery;Sweep the floor bar 3, top horizontal bar 5, by-level The spreading of bar 6 and bridging (8) takes rotary buckle 9 to connect, and wherein, the lap of splice of bridging 8 cannot be less than 1000mm, And rotary buckle 9 is fixed respectively at apart from rod end not less than 100mm;

(3) every layer of support perimeter and structural frames trestle are carried out support body drawknot, forms thick pillar device;

(4) setting up after the stupefied beam 10 of firm and surrounding is connected firmly with support after support carries out model sheetinstallat;

Wherein, the template of the high-order cast-in-place concrete structure formwork system requires that checking computations span centre and the least favorable of cantilever end resist Curved intensity and amount of deflection, its should meet following requirements:

In formula:

σm- template bending normal stresses;

Mmax- least favorable moment-curvature relationship, takes the big value of result of calculation when evenly load is acted on respectively with load;

Wx- template gross cross-sectional resistance moment;

fm- template bending strength design load;

bm- template gross cross-sectional parallel with x-axis direction size;

hm- template gross cross-sectional vertical with x-axis direction size;

υ-formwork calculation amount of deflection;

[υ]-template allowable deflection;

qgThe uniform line load standard value of-dead load;

L- formwork calculation span;

IxThe cross sectional moment of inertia in-plank sheathing x-axis direction;

P- load standard value;

E- template elastic modelling quantity;.

Wherein, the bar 3 of sweeping the floor of the high-order cast-in-place concrete structure formwork system scaffold, top horizontal bar 5 and centre Horizon bar 6 requires checking computations least favorable bending strength, and which should meet following requirements:

M=1.2MGK+1.4∑MQK(f)

In formula:

The bending normal stresses of σ-sweep the floor bar 3, top horizontal bar 5 and by-level bar 6;

M- sweeps the floor the moment-curvature relationship of bar 3, top horizontal bar 5 and by-level bar 6;

W- sweeps the floor the section modulus of bar 3, top horizontal bar 5 and by-level bar 6;

fsThe bending strength design load of-sweep the floor bar 3, top horizontal bar 5 and by-level bar 6;

MGKThe moment of flexure standard value that the deadweight of-scaffold board is produced;

MQKThe moment of flexure standard value that-construction loads is produced;

D- sweeps the floor the external diameter of bar 3, top horizontal bar 5 and 6 section of by-level bar;

D- sweeps the floor the internal diameter of bar 3, top horizontal bar 5 and 6 section of by-level bar.

Wherein, the full hall template bracket post 1 of the high-order cast-in-place concrete structure formwork system requires checking computations stability, its Following requirements should be met:

N=1.2 (NG1K+NG2K)+1.4∑NQK(h)

The full hall template bracket post 1 of N- calculates the axial design value of section;

The stability coefficient of-axis compression member;

The area of section of the full hall template bracket post 1 of A-;

fvThe compression strength design load of-full hall template bracket post 1;

NG1KThe axial force standard value that 2 dead load of-scaffold is produced;

NG2KThe axial force standard value that the deadweight of-component and fitting is produced;

ΣNQKThe axial force standard value summation that-construction loads is produced.

The invention has the beneficial effects as follows:A kind of construction method of described high position cast-in-place concrete structure formwork system, leads to The formwork system of uniqueness is crossed, is solved and holds as a high-supported formwork engineering that difficulty of construction is big, technical requirements are high, danger coefficient is strong The problem of security incident is easily broken out, template support top engineering can be avoided collapse accident occur, it is ensured that the security of structure construction, The safe and stable, coordination operation of whole building engineering system and the lives and properties of people are ensured.

Description of the drawings

Fig. 1 is the stencil design floor map of the present invention;Fig. 2 is stencil design horizontal section schematic diagram;The mould that Fig. 3 is Plate designs longitudinal profile schematic diagram;Fig. 4 is scaffold building facade arrangement schematic diagram;Fig. 5 is bridging facade arrangement schematic diagram.

Specific embodiment

The present invention is the construction method of high-order cast-in-place concrete structure formwork system, and as shown in Fig. 1~5, its step is:

(1) material required for high-order cast-in-place concrete structure formwork system, instrument and apparatus are got out before constructing;

(2) according to the measurement and positioning unwrapping wire of construction drawing and job site, and determine full 1 bottomland of hall template bracket post Base bearing capacity;Then scaffold 2 is set up, full hall support bracket system is set up using steel pipe, put bar 3 of sweeping the floor, placing steel tubes pad Block 4, and full hall template bracket post 1 is erected on steel pipe cushion block 4, wherein, the load-bearing connected mode of full hall template bracket post 1 For adjustable bracket, then full hall template bracket post 1 is buckled with bar 3 of sweeping the floor;The top of full hall template bracket post 1 should be along vertical One top horizontal bar (5) is laterally respectively set;The spacing that sweeps the floor between bar 3 and top horizontal bar 5, is meeting stencil design institute really Under conditions of fixed 6 stride requirements of by-level bar, determination step pitch is distributed equally, at each step pitch, vertically and horizontally respectively sets one Road by-level bar 6;The sweep the floor end of bar 3, top horizontal bar 5 and by-level bar 6 is all completely embedded with surrounding building; Full hall template bracket post 1 is connected using sleeve couple 7, and the banjo fixing butt jointing of an adjacent two full template bracket post 1 must not be same In one step, the distance that banjo fixing butt jointing vertically staggers cannot be less than 500mm, and connector center is not more than the 1/3 of step pitch away from host node; Full hall template bracket post 1 should set bridging 8 from the bottom to top in outer periphery;Sweep the floor bar 3, top horizontal bar 5, by-level The spreading of bar 6 and bridging (8) takes rotary buckle 9 to connect, and wherein, the lap of splice of bridging 8 cannot be less than 1000mm, And rotary buckle 9 is fixed respectively at apart from rod end not less than 100mm;

(3) every layer of support perimeter and structural frames trestle are carried out support body drawknot, forms thick pillar device;

(4) setting up after the stupefied beam 10 of firm and surrounding is connected firmly with support after support carries out model sheetinstallat;

Wherein, the template of the high-order cast-in-place concrete structure formwork system requires that checking computations span centre and the least favorable of cantilever end resist Curved intensity and amount of deflection, its should meet following requirements:

In formula:

σm- template bending normal stresses;

Mmax- least favorable moment-curvature relationship, takes the big value of result of calculation when evenly load is acted on respectively with load;

Wx- template gross cross-sectional resistance moment;

fm- template bending strength design load;

bm- template gross cross-sectional parallel with x-axis direction size;

hm- template gross cross-sectional vertical with x-axis direction size;

υ-formwork calculation amount of deflection;

[υ]-template allowable deflection;

qgThe uniform line load standard value of-dead load;

L- formwork calculation span;

IxThe cross sectional moment of inertia in-plank sheathing x-axis direction;

P- load standard value;

E- template elastic modelling quantity;.

Wherein, the bar 3 of sweeping the floor of the high-order cast-in-place concrete structure formwork system scaffold, top horizontal bar 5 and centre Horizon bar 6 requires checking computations least favorable bending strength, and which should meet following requirements:

M=1.2MGK+1.4∑MQK(f)

In formula:

The bending normal stresses of σ-sweep the floor bar 3, top horizontal bar 5 and by-level bar 6;

M- sweeps the floor the moment-curvature relationship of bar 3, top horizontal bar 5 and by-level bar 6;

W- sweeps the floor the section modulus of bar 3, top horizontal bar 5 and by-level bar 6;

fsThe bending strength design load of-sweep the floor bar 3, top horizontal bar 5 and by-level bar 6;

MGKThe moment of flexure standard value that the deadweight of-scaffold board is produced;

MQKThe moment of flexure standard value that-construction loads is produced;

D- sweeps the floor the external diameter of bar 3, top horizontal bar 5 and 6 section of by-level bar;

D- sweeps the floor the internal diameter of bar 3, top horizontal bar 5 and 6 section of by-level bar.

Wherein, the full hall template bracket post 1 of the high-order cast-in-place concrete structure formwork system requires checking computations stability, its Following requirements should be met:

N=1.2 (NG1K+NG2K)+1.4∑NQK(h)

The full hall template bracket post 1 of N- calculates the axial design value of section;

The stability coefficient of-axis compression member;

The area of section of the full hall template bracket post 1 of A-;

fvThe compression strength design load of-full hall template bracket post 1;

NG1KThe axial force standard value that 2 dead load of-scaffold is produced;

NG2KThe axial force standard value that the deadweight of-component and fitting is produced;

ΣNQKThe axial force standard value summation that-construction loads is produced.

Claims (1)

1. the construction method of high-order cast-in-place concrete structure formwork system, it is characterised in that its step is:
(1) material required for high-order cast-in-place concrete structure formwork system, instrument and apparatus are got out before constructing;
(2) according to the measurement and positioning unwrapping wire of construction drawing and job site, and determine full hall template bracket post (1) bottom ground Bearing capacity;Then scaffold (2) is set up, full hall support bracket system is set up using steel pipe, put bar of sweeping the floor (3), placing steel tubes Cushion block (4), and full hall template bracket post (1) is erected on steel pipe cushion block (4), wherein, expire holding for hall template bracket post (1) Mode is reconnected for adjustable bracket, then full hall template bracket post (1) is buckled with bar of sweeping the floor (3);Full hall falsework stands The top edge of post (1) vertically and horizontally respectively arranges one top horizontal bar (5);Between sweeping the floor between bar (3) and top horizontal bar (5) Away from, under conditions of by-level bar (6) stride requirements determined by stencil design are met, determination step pitch is distributed equally, One by-level bar (6) vertically and horizontally respectively should be set at each step pitch;Sweep the floor bar (3), top horizontal bar (5) and by-level The end of bar (6) is all completely embedded with surrounding building;Full hall template bracket post (1) is connected using sleeve couple (7), adjacent The banjo fixing butt jointing of a two full template bracket post (1) must not be in same step, and the distance that banjo fixing butt jointing vertically staggers must not be little In 500mm, connector center is not more than the 1/3 of step pitch away from host node;Full hall template bracket post (1) outer periphery should set by under Supreme bridging (8);The spreading of bar (3), top horizontal bar (5), by-level bar (6) and bridging (8) of sweeping the floor is taken Rotary buckle (9) connects, and wherein, the lap of splice of bridging (8) cannot be less than 1000mm, and rotary buckle (9) exists respectively It is not less than at 100mm apart from rod end and fixes;
(3) every layer of support perimeter and structural frames trestle are carried out support body drawknot, forms thick pillar device;
(4) setting up after firm and surrounding stupefied beam (10) is connected firmly with support after support carries out model sheetinstallat;
Wherein, the template of the high-order cast-in-place concrete structure formwork system requires to check span centre and the least favorable bending resistance of cantilever end is strong Degree and amount of deflection, which should meet following requirements:
σ m = M m a x W x ≤ f m - - - ( a )
W x = b m h m 2 6 - - - ( b )
υ = 5 q g L 4 384 EI x + PL 3 48 EI x ≤ [ υ ] - - - ( c )
I x = b m h m 3 12 - - - ( d )
In formula:σm- template bending normal stresses;
Mmax- least favorable moment-curvature relationship, takes the big value of result of calculation when evenly load is acted on respectively with load;
Wx- template gross cross-sectional resistance moment;
fm- template bending strength design load;
bm- template gross cross-sectional parallel with x-axis direction size;
hm- template gross cross-sectional vertical with x-axis direction size;
υ-formwork calculation amount of deflection;
[υ]-template allowable deflection;
qgThe uniform line load standard value of-dead load;
L- formwork calculation span;
IxThe cross sectional moment of inertia in-plank sheathing x-axis direction;
P- load standard value;
E- template elastic modelling quantity;.
Wherein, the bar of sweeping the floor (3) of the high-order cast-in-place concrete structure formwork system scaffold, top horizontal bar (5) and centre Horizon bar (6) requires checking computations least favorable bending strength, and which should meet following requirements:
σ = M W ≤ f s - - - ( e )
M=1.2MGK+1.4∑MQK(f)
W = π ( D 4 - d 4 ) 32 D - - - ( g )
In formula:
The bending normal stresses of σ-bar of sweeping the floor (3), top horizontal bar (5) and by-level bar (6);
M- sweeps the floor the moment-curvature relationship of bar (3), top horizontal bar (5) and by-level bar (6);
W- sweeps the floor the section modulus of bar (3), top horizontal bar (5) and by-level bar (6);
fsThe bending strength design load of-bar of sweeping the floor (3), top horizontal bar (5) and by-level bar (6);
MGKThe moment of flexure standard value that the deadweight of-scaffold board is produced;
MQKThe moment of flexure standard value that-construction loads is produced;
D- sweeps the floor the external diameter of bar (3), top horizontal bar (5) and by-level bar (6) section;
D- sweeps the floor the internal diameter of bar (3), top horizontal bar (5) and by-level bar (6) section.
Wherein, full hall template bracket post (1) of the high-order cast-in-place concrete structure formwork system requires checking computations stability, and which should Meet following requirements:
N=1.2 (NG1K+NG2K)+1.4∑NQK(h)
The full hall template bracket post (1) of N- calculates the axial design value of section;
The stability coefficient of-axis compression member;
The area of section of the full hall template bracket post (1) of A-;
fvThe compression strength design load of-full hall template bracket post (1);
NG1KThe axial force standard value that the deadweight of-scaffolding structure is produced;
NG2KThe axial force standard value that the deadweight of-component and fitting is produced;
ΣNQKThe axial force standard value summation that-construction loads is produced.
CN201610913114.4A 2016-10-20 2016-10-20 The construction method of high-order cast-in-place concrete structure formwork system CN106481068A (en)

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Application Number Priority Date Filing Date Title
CN201610913114.4A CN106481068A (en) 2016-10-20 2016-10-20 The construction method of high-order cast-in-place concrete structure formwork system

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Application Number Priority Date Filing Date Title
CN201610913114.4A CN106481068A (en) 2016-10-20 2016-10-20 The construction method of high-order cast-in-place concrete structure formwork system

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Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN109322480A (en) * 2018-10-31 2019-02-12 中国二十冶集团有限公司 Total sub-semigroup and its application method

Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH08232457A (en) * 1995-02-24 1996-09-10 Kajima Corp Method of construction for building of reinforced concrete pole steel frame roof
CN103615110A (en) * 2013-08-21 2014-03-05 广西建工集团第一建筑工程有限责任公司 Irregular oblique-crossing web-shaped grillage beam hyperbolic roof structure construction method
CN203475867U (en) * 2013-08-16 2014-03-12 中建一局集团第三建筑有限公司 Lattice-type supporting system
CN104712141A (en) * 2013-12-12 2015-06-17 五冶集团上海有限公司 Construction method of cast-in-place reinforced concrete dense ribbed beam floor

Patent Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH08232457A (en) * 1995-02-24 1996-09-10 Kajima Corp Method of construction for building of reinforced concrete pole steel frame roof
CN203475867U (en) * 2013-08-16 2014-03-12 中建一局集团第三建筑有限公司 Lattice-type supporting system
CN103615110A (en) * 2013-08-21 2014-03-05 广西建工集团第一建筑工程有限责任公司 Irregular oblique-crossing web-shaped grillage beam hyperbolic roof structure construction method
CN104712141A (en) * 2013-12-12 2015-06-17 五冶集团上海有限公司 Construction method of cast-in-place reinforced concrete dense ribbed beam floor

Non-Patent Citations (1)

* Cited by examiner, † Cited by third party
Title
李天忠: "《施工企业安全管理实务汇编》", 30 November 2012 *

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN109322480A (en) * 2018-10-31 2019-02-12 中国二十冶集团有限公司 Total sub-semigroup and its application method

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Application publication date: 20170308