CN101538939B - Construction method for preset nut type steel-reinforced concrete compound pier template fixing device - Google Patents

Construction method for preset nut type steel-reinforced concrete compound pier template fixing device Download PDF

Info

Publication number
CN101538939B
CN101538939B CN2009100254967A CN200910025496A CN101538939B CN 101538939 B CN101538939 B CN 101538939B CN 2009100254967 A CN2009100254967 A CN 2009100254967A CN 200910025496 A CN200910025496 A CN 200910025496A CN 101538939 B CN101538939 B CN 101538939B
Authority
CN
China
Prior art keywords
template
nut
keel
steel
screw rod
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Active
Application number
CN2009100254967A
Other languages
Chinese (zh)
Other versions
CN101538939A (en
Inventor
吴碧桥
朱学农
唐兵
王爱军
张传捷
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
JIANGSU HUAJIAN CONSTRUCTION CO Ltd
Original Assignee
JIANGSU HUAJIAN CONSTRUCTION CO Ltd
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by JIANGSU HUAJIAN CONSTRUCTION CO Ltd filed Critical JIANGSU HUAJIAN CONSTRUCTION CO Ltd
Priority to CN2009100254967A priority Critical patent/CN101538939B/en
Publication of CN101538939A publication Critical patent/CN101538939A/en
Application granted granted Critical
Publication of CN101538939B publication Critical patent/CN101538939B/en
Active legal-status Critical Current
Anticipated expiration legal-status Critical

Links

Abstract

The invention discloses a preset nut type steel-reinforced concrete compound pier template fixing device and a construction method thereof. The fixing device mainly comprises a template, a nut, a screw rod, a PVC protecting pipe, an inner keel and an outer keel. The nut is welded on a steel column, the template surrounds the periphery of the steel column, the outer keel is arranged around the outer side of the template, the inner keel is arranged between the template and the outer keel, one end of the screw rod is connected with the nut by a thread, the PVC protecting pipe is sleeved on the screw rod, and the other end of the screw rod is fixed on the outer keel by a 3-shaped buckle. The invention has simple structure, low cost, and simple and convenient construction, solves the difficulty of fixing the steel-reinforced concrete compound pier template, is convenient for the field construction operation and lightens the workload and the labor intensity. The inner keel, the outer keel, the template and the screw rod can be repeatedly used so as to save the cost, ensure the construction safety of the template and improve the forming quality of the concrete column; meanwhile, the fixing device adopts common materials, thereby lowering the cost and being convenient for popularization and application.

Description

The job practices of preset nut type steel-reinforced concrete compound pier template fixing device
Technical field
The present invention relates to a kind of job practices of steel reinforced concrete coupled column fixing templates, belong to technical field of building construction.
Background technology
Fast development along with urban construction, increasing super highrise building emerges in large numbers in the city, for satisfying height, the requirement of spatial variations and structure stress, considerable super highrise building has adopted reinforced concrete composite structure, owing to be provided with steel column in the steel reinforced concrete coupled column, steel column can not arbitrarily be bored a hole, be used to build the concrete template of post and can't the lateral pressure that Screw arbor with nut at both-ends bears column template be set as the ordinary concrete post fixedly the time, the main before this method that adopts is to weld Screw arbor with nut at both-ends at the construction field (site) with fixed form on steel column, time-consuming, screw rod can't have enough to meet the need use, therefore design a kind of new steel reinforced concrete coupled column fixing templates, and propose targetedly that job practices has the realistic meaning of highly significant.
Summary of the invention
The objective of the invention is provides a kind of simple in structure at the fixing above shortcomings of existing steel reinforced concrete coupled column template, and cost is low, and easy construction is the preset nut type steel-reinforced concrete compound pier template fixing device job practices efficiently.
First purpose of the present invention is achieved in that the job practices of preset nut type steel-reinforced concrete compound pier template fixing device, may further comprise the steps:
1) according to the design of the lateral pressure of concreting, design preparation nut, screw rod, pvc pipe is determined the arrangement pitch of steel column top nut;
2) on steel column, unwrapping wire is located in the welded nut position, carry out the nut welding by the mast axis direction, weld bead height 4mm, site error is controlled in the 3mm, and the face of weld of steel column is parallel with template, and the bigger side parallels plate in slit is arranged between nut and the steel column; 3) with spanner one end of screw rod is screwed into nut before template is installed, puts pvc pipe;
4) determine the template position of opening according to the nut network for location on the steel column, draw template perforate figure, according to drawing perforate on template, perforate is corresponding with nut location;
5) mounting template, keelson, outer keel, template adopts the thick veneer of 18mm, template stands in the steel column periphery, keelson adopts 50mm * 100mm flitch, vertically be arranged on the template outside, spacing is less than 200mm, and outer keel adopts the two steel pipes of Φ 48 * 3.5mm, outer keel is located at the keelson periphery, and keelson squeezes and withstands template and outer keel.
6) screw rod passes the template perforate, and the other end of screw rod passes through " 3 " shape snap fit on outer keel.
The two steel pipes of described outer keel are connected and fixed by Screw arbor with nut at both-ends.
Stress performance according to concreting lateral pressure design formulas and nut, screw rod, weld seam calculates, designs specification, the spacing of screw rod, determines the spacing and the requirement of welding of nut size, specification and layout; Computational process is as follows:
1. column template characteristic value of load calculating newly placed concrete lateral pressure design formulas is the smaller value in the following formula:
F = 0.2 2 γ c t β 1 β 2 V F=γ cH
γ c---concrete unit weight wherein;
The initial setting time of t---newly placed concrete;
T---concrete molding temperature;
V---concrete speed of perfusion;
H---concrete lateral pressure calculating location place is to newly placed concrete end face overall height;
β 1---and Admixture influences correction factor;
β 2---and concrete slump influences correction factor.
2. the calculating of column template panel
Panel directly bears the load that template is transmitted, and calculates according to the three-span continuous beam under the evenly distributed load, is calculated as follows
(1) flexural strength is calculated
f=M/W<[f]
F---the flexural strength calculated value (N/mm2) of panel wherein;
The maximum bending moment (N.mm) of M---panel;
The net section resistance moment of W---panel;
The flexural strength design load of [f]---panel is got 15.00N/mm2;
M=0.100ql2
Q---design load (kN/m) wherein;
(2) shearing resistance is calculated
T=3Q/2bh<[T]
(3) Calculation of Deflection
v=0.677ql4/100EI<[v]=1/250
3. the calculating of flitch keelson
Perpendicular stupefied flitch directly bears the load that template is transmitted, and calculates according to the three-span continuous beam under the evenly distributed load, is calculated as follows
(1) flexural strength is calculated
Flexural calculation intensity f=M/W
(2) shearing resistance is calculated
The design formulas of maximum shear is as follows: Q=0.6ql
The cross section shear strength must satisfy: T=3Q/2bh<[T]
(3) Calculation of Deflection
Maximum defluxion is less than 400.0/250.
4. the calculating of two steel pipe outer keels
Calculate maximal bending moment Mmax, maximum distortion vmax, maximum bearing power Qmax through continuous beam.
Flexural calculation intensity f=M/W
5. the calculating of screw rod
Design formulas: N<[N]=fA
N---the pulling force that split bolt is suffered wherein;
A---split bolt effective area (mm2);
The tensile strength design load of f---split bolt is got 170N/mm2.
The present invention is simple in structure, and cost is low, and easy construction is quick, can solve the fixing difficult problem of steel reinforced concrete coupled column template, makes things convenient for on-site construction operations greatly, alleviates site work amount and labour intensity.Behind the profile steel concrete column concreting hardened forming, use the spanner rotary screw, remove screw rod and outer, keelson, template, not only inside and outside keel, template can be had enough to meet the need repeated use, and screw rod also can have enough to meet the need repeated use, have saved the screw rod material greatly, template construction safety and concrete column forming impression quality have been guaranteed, and adopt common material, cost economy, easy to utilize.
Description of drawings
The present invention is further illustrated below in conjunction with accompanying drawing.
Fig. 1 is the structural representation of round steel pipe for steel column of the present invention;
Fig. 2 is the structural representation of H type, cross material for steel column of the present invention.
Among the figure: 1 nut, 2 screw rods, 3 templates, 4 keelsons, 5 outer keels, 6 steel columns, 7PVC pipe, 8 " 3 " shape buckles
The specific embodiment
Embodiment one
It is round steel pipe that the preset nut type steel-reinforced concrete compound pier template fixing device of this example is used for steel column, and as shown in Figure 1, the construction concrete steps during structure are:
1, steel column 6 adopts round steel pipe, and nut 1 adopts the extended type nut, and to location, nut 1 position unwrapping wire, welding personnel carries out the nut welding by the mast axis direction on the round steel tubing string, weld bead height 4mm, and site error is controlled in the 3mm.The suitable parallels plate of the bigger side in slit between nut 1 and the steel pipe walls, weld bead height 4mm.
2, earlier screw rod 2 is screwed into nut 1 with spanner before template is installed, puts pvc pipe 7 on the screw rod 2, adjust direction.
3, determine the template position of opening according to steel pipe column nut network for location, draw template perforate figure, arrange carpenter's processing space special messenger to carry out blanking, perforate, guarantee that its position is accurate, reduce deviation with nut location according to drawing.
4, priority mounting template 3, keelson 4, outer keel 5, template adopts the thick veneer of 18mm, and keelson adopts 50mm * 100mm flitch, the vertical setting, spacing is not more than 200mm, the two steel pipes of outer keel employing Φ 48 * 3.5mm, spacing is not more than 400mm.
5, by " 3 " shape buckle 8 screw rod is fixed on the two steel pipes of outer keel, bears form lateral pressure.Final constitute M14 extended type nut 1 shown in Figure 1, Φ 14 screw rods 2 that screw thread is all established at two, the pvc pipe 7 of sheath screw rod, and the profile steel concrete column fixing templates of template 3, keelson 4, outer keel 5.
Embodiment two
It is H type, cross shaped steel that the preset nut type steel post reinforced concrete compound pier template fixing device of present embodiment is used for steel column, as shown in Figure 2, identical with embodiment 1 basic structure, difference is that preset nut 1 is to be welded in advance on steel column 6 column webs, before installing, template earlier screw rod 2 is screwed into nut 1 with spanner, screw rod 2 puts pvc pipe 7, first again back mounting pole template 3, keelson flitch 4, the two steel pipes 5 of outer keel.
In addition to the implementation, the present invention can also be the enforcement of fixing, construct of the reinforced concrete compound pier template of the steel column of other form of structure.

Claims (2)

1. the job practices of a preset nut type steel-reinforced concrete compound pier template fixing device is characterized in that may further comprise the steps:
1) according to the design of the lateral pressure of concreting, design preparation nut, screw rod, pvc pipe is determined the arrangement pitch of steel column top nut;
2) on steel column, unwrapping wire is located in the welded nut position, carry out the nut welding by the mast axis direction, weld bead height 4mm, site error is controlled in the 3mm, and the face of weld of steel column is parallel with template, and the bigger side parallels plate in slit is arranged between nut and the steel column;
3) with spanner one end of screw rod is screwed into nut before template is installed, puts pvc pipe;
4) determine the template position of opening according to the nut network for location on the steel column, draw template perforate figure, according to drawing perforate on template, perforate is corresponding with nut location;
5) mounting template, keelson, outer keel, template adopts the thick veneer of 18mm, template stands in the steel column periphery, keelson adopts 50mm * 100mm flitch, vertically be arranged on the template outside, spacing is less than 200mm, and outer keel adopts the two steel pipes of Φ 48 * 3.5mm, outer keel is located at the keelson periphery, and keelson squeezes and withstands template and outer keel.
6) screw rod passes the template perforate, and the other end of screw rod passes through " 3 " shape snap fit on outer keel.
2. the job practices of preset nut type steel-reinforced concrete compound pier template fixing device according to claim 4 is characterized in that the two steel pipes of described outer keel are connected and fixed by Screw arbor with nut at both-ends.
CN2009100254967A 2009-03-03 2009-03-03 Construction method for preset nut type steel-reinforced concrete compound pier template fixing device Active CN101538939B (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
CN2009100254967A CN101538939B (en) 2009-03-03 2009-03-03 Construction method for preset nut type steel-reinforced concrete compound pier template fixing device

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CN2009100254967A CN101538939B (en) 2009-03-03 2009-03-03 Construction method for preset nut type steel-reinforced concrete compound pier template fixing device

Publications (2)

Publication Number Publication Date
CN101538939A CN101538939A (en) 2009-09-23
CN101538939B true CN101538939B (en) 2010-10-27

Family

ID=41122312

Family Applications (1)

Application Number Title Priority Date Filing Date
CN2009100254967A Active CN101538939B (en) 2009-03-03 2009-03-03 Construction method for preset nut type steel-reinforced concrete compound pier template fixing device

Country Status (1)

Country Link
CN (1) CN101538939B (en)

Families Citing this family (14)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN102383411B (en) * 2011-08-23 2014-03-05 中国葛洲坝集团股份有限公司 Method for positioning template corner
CN103161309A (en) * 2011-12-13 2013-06-19 永升建设集团有限公司 Narrow deformation joint inner side template installation and construction method
CN102444283A (en) * 2011-12-22 2012-05-09 中建二局大连建筑工程有限公司 Lateral bracing structure of building formwork
CN102733598A (en) * 2012-07-13 2012-10-17 中建八局第三建设有限公司 Straight threaded sleeve combined structure for reinforcing figured steel rib column template
CN102864927A (en) * 2012-10-10 2013-01-09 南通纺织职业技术学院 Large-section special-shaped combined steel and concrete column construction method
CN104141382A (en) * 2013-12-10 2014-11-12 中建四局第五建筑工程有限公司 Construction method of building steel pipe column protective coating and cylindrical template
CN103912120B (en) * 2014-04-22 2015-10-28 山西省宏图建设集团有限公司 Tool type rectangular column mould reinforcement device
CN104251801B (en) * 2014-09-12 2016-11-30 上海建工集团股份有限公司 For measuring the test device of concrete blinding lateral pressure
CN105649330B (en) * 2015-12-31 2017-12-01 上海欧本钢结构有限公司 A kind of plug-in formwork system and its application method for making skeleton using steel reinforcement cage
CN105715039A (en) * 2016-04-15 2016-06-29 中铁五局集团路桥工程有限责任公司 Movable recyclable template back rib device
CN106320704A (en) * 2016-08-22 2017-01-11 陕西建工第建设集团有限公司 Steel reinforced concrete structure formwork sleeve threaded rod pulling construction method
CN107905528A (en) * 2017-10-23 2018-04-13 中国十七冶集团有限公司 A kind of half bag column template of reinforced concrete quickly pacifies dismantling device and its construction method
CN109025251A (en) * 2018-09-04 2018-12-18 上海宝冶建筑工程有限公司 A kind of arc plank sheathing bracing means and construction equipment
CN110424732A (en) * 2019-09-03 2019-11-08 中国电建集团山东电力建设有限公司 The construction method of template system for concreting

Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
BE827220A (en) * 1974-03-28 1975-07-16 Spacer for assembling shuttering plates into foldable shuttering element and shuttering element assembled by such spacers
US4159097A (en) * 1976-09-13 1979-06-26 Strickland Systems Inc. Tie having integrally molded sleeve
CN2632213Y (en) * 2003-06-18 2004-08-11 沈小林 Formwork fastener
CN201401010Y (en) * 2009-04-15 2010-02-10 江苏省华建建设股份有限公司 Fixing device for preset nut type steel reinforced concrete combined column template

Patent Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
BE827220A (en) * 1974-03-28 1975-07-16 Spacer for assembling shuttering plates into foldable shuttering element and shuttering element assembled by such spacers
US4159097A (en) * 1976-09-13 1979-06-26 Strickland Systems Inc. Tie having integrally molded sleeve
CN2632213Y (en) * 2003-06-18 2004-08-11 沈小林 Formwork fastener
CN201401010Y (en) * 2009-04-15 2010-02-10 江苏省华建建设股份有限公司 Fixing device for preset nut type steel reinforced concrete combined column template

Also Published As

Publication number Publication date
CN101538939A (en) 2009-09-23

Similar Documents

Publication Publication Date Title
CN101538939B (en) Construction method for preset nut type steel-reinforced concrete compound pier template fixing device
CN201972237U (en) Section prefabricated rectangular steel pipe concrete truss
CN2390933Y (en) Square steel pipe concrete beam and column jointing gusset
CN201339250Y (en) Stiffness structure framework beam preformed steel reinforcement framework structure
CN106567458A (en) Assembly type steel-concrete combined beam column frame structure system
CN201401010Y (en) Fixing device for preset nut type steel reinforced concrete combined column template
CN206903022U (en) A kind of steel bar truss floor support plate
CN202520017U (en) Construction structure of variable cross-section prestress overhanging type folding beam for stand
CN110878522B (en) Main tower lower cross beam construction system and construction method
CN203654710U (en) Instrumental connecting tube for external wall scaffold shearing wall portion
CN2385010Y (en) External mounted square steel tube concrete beam and column connecting node
CN109610817A (en) Cross beam falsework and its design and construction method
CN104727446A (en) Construction method of large aluminum alloy formwork at settlement joint
CN102605955A (en) Stand variable-section prestress overhanging type folding beam construction method
CN203755269U (en) Surge shaft cast-in-situ concrete assembling type formwork support
CN203188612U (en) Beam frame type building template system
CN211622269U (en) Hollow sandwich steel pipe concrete beam with eccentrically placed inner pipe
CN211006352U (en) Pier stud template reinforced structure
CN210459542U (en) Cast-in-place shear force wall body fixing device of assembled coincide floor and fixed knot construct
CN210917036U (en) Bridge turnover formwork variable cross-section pier body formwork reinforcing and slope adjusting device
CN209760607U (en) steel bar lapping connector
CN210858003U (en) Aluminum alloy template beam with buckle device
CN212670858U (en) Building steel structure engineering built-in fitting
CN213806724U (en) Beam enlarging and reinforcing device for reconstruction engineering
CN211079895U (en) High pier bent cap does not have cast-in-place structure of support

Legal Events

Date Code Title Description
PB01 Publication
C06 Publication
SE01 Entry into force of request for substantive examination
C10 Entry into substantive examination
GR01 Patent grant
C14 Grant of patent or utility model