CN104196242A - Stack-pouring fast form stripping construction method for prefabricated member thin webbed girders - Google Patents
Stack-pouring fast form stripping construction method for prefabricated member thin webbed girders Download PDFInfo
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- CN104196242A CN104196242A CN201410439446.4A CN201410439446A CN104196242A CN 104196242 A CN104196242 A CN 104196242A CN 201410439446 A CN201410439446 A CN 201410439446A CN 104196242 A CN104196242 A CN 104196242A
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- thin webbed
- webbed girder
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Abstract
The invention relates to a stack-pouring fast form stripping construction method for prefabricated member thin webbed girders. The method comprises the following steps that field leveling and punning are carried out on thin webbed girder pouring positions, bricks are stacked on lower member supports, formworks are mounted, concrete is poured, thin webbed girder bottom formworks are removed, and concrete maintenance is carried out. The field is reasonably utilized, the prefabricated field utilization rate of the construction field is improved, the input of the pouring member bottom formworks is saved, fast circulation of the bottom formworks is accelerated, the process is simple, the operation is convenient, members are stacked in a centralized mode, secondary carrying in the hoisting process is reduced, all the prefabricated members are arranged within the rotary radius of a crane, members damaged in the secondary carrying process are reduced, the construction process of the prefabricated members is accelerated, and economic benefits are improved.
Description
Technical field
The present invention relates to that the quick form removal of assembling workshop steel reinforced concrete thin webbed girder is folded waters construction method, belong to technical field of building construction.
Background technology:
Assembling factory building member is more, site layout project difficulty, a lot of thin-wall members adopt the folded method of watering to save place as far as possible, and in-situ deposited prefabricated member must wait rim of a cup basis to complete and backfill after can build, so assembling factory building was had relatively high expectations to the construction period in early stage.The prefabricated installing engineering of reinforced concrete structure is traditional construction of hydropower method, is mainly steel concrete rim of a cup basis, and prefabricated member is generally prefabricated post, crane girder, thin webbed girder, skylight truss, sawtooth beam, tile hanging board (or large roof slab) etc.The advantages such as prefabricated assembled factory building has structure durability, anticorrosive, assembling speed is fast, easy to assembly, but also there is the contradictions such as member pouring position arrangement between the restriction of site prefabrication member cast place and lifting order, crane track route, interior all disposable being in place of member of the crane radius of gyration.
Summary of the invention
For above-mentioned defect, the object of the present invention is to provide and can improve the prefabricated utilization of area rate in job site, construction part module input amount is built in saving, shorten template life cycle, accelerate prefabricated units construction speed, the prefabricated assembled member thin webbed girder of increasing economic efficiency is folded and is watered quick form removal construction method.
The technical solution adopted in the present invention is for this reason:
Prefabricated assembled member thin webbed girder is folded waters quick form removal construction method, comprise the following steps,
Step 1, thin webbed girder is built position levelling of the land compacting, at the reserved post in rim of a cup basis, hole surrounding is installed and uses brick code real, reserves the operating surface that prefabricated post is installed, foundation ditch back-filling in layers after stacking bricks, every layer of backfill thickness is 200mm and tamps;
Step 2, under member, brick bearing stacks fragment of brick, folded brick pier under thin webbed girder, every stacked brick pier and adjacent stacked brick pier are vertically same;
Step 3, installation form, first from one end, start order thin webbed girder soffit formwork is installed, with to wedge leveling thin webbed girder soffit formwork, bracing wire alignment is the soffit formwork of leveling, and thin webbed girder side template is installed, and prefabricated thin webbed girder cage of reinforcement is installed, built-in fitting in thin webbed girder is installed, the thin abdomen of thin webbed girder place slope shape combination wooden form is installed and is firmly connected with thin webbed girder side template;
Step 4, concreting, concreting starts from thin webbed girder one end and advances successively, during blanking, protect built-in fitting, must not overexert and cause built-in fitting displacement, the stickfast of thin abdomen place slope shape combination wooden form prevents because concrete vibrating floats on thin webbed girder side template, and then concrete edge blanking limit poker vibrator vibration compacting uses that wooden crab plasterer's trowel is floating, compacting, troweling;
Step 5, after concrete initial set, first removes thin webbed girder side template, and press pouring order of concrete blocked breaking except thin webbed girder soffit formwork, thin webbed girder soffit formwork of every dismounting superpose immediately fragment of brick padded and use flat to wheel chock after, with two hand hammers, touch wedge two ends simultaneously, make wedge fully stressed;
Step 6, concrete curing, concreting starts to cover straw bag water seasoning in complete 12 hours, and at the thin abdomen of thin webbed girder place water storing conservation, curing time must not be less than 14 days.
In described concrete, adopt strength grade to be not less than portland cement or the Composite portland cement of 42.5 grades.
Described thin webbed girder soffit formwork is combined by wooden a tree, used in making timber for boats and veneer, and thin webbed girder soffit formwork comprises 2 end soffit formworks and some middle parts soffit formwork, and end soffit formwork width is 500mm, length is thin webbed girder width, middle part soffit formwork width is 700mm, and length is thin webbed girder width, and wooden a tree, used in making timber for boats is pine a tree, used in making timber for boats.
Advantage of the present invention is:
The present invention rationally utilizes place, improved the prefabricated utilization of area rate in job site, member soffit formwork input amount is built in saving, has accelerated the quick turnover of soffit formwork, and technique is fairly simple, easy to operate, member is concentrated the rehandling of stacking while having reduced lifting, and all prefabricated units are arranged in crane radius of gyration, has reduced the member disrepair phenomenon that rehandling causes, accelerate prefabricated units construction speed, improved economic benefit.
Accompanying drawing explanation
Fig. 1 is thin webbed girder soffit formwork braced structures schematic diagram.
Fig. 2 is the folded structural representation that waters of thin webbed girder.
In figure, 1 is fragment of brick, the 2nd, thin webbed girder soffit formwork, the 3rd, and thin webbed girder side template, the 4th, thin abdomen place slope shape combination wooden form, the 5th, to wedge.
The specific embodiment
Prefabricated assembled member thin webbed girder is folded waters quick form removal construction method, it is characterized in that, comprise the following steps,
Step 1, thin webbed girder is built position levelling of the land compacting, at the reserved post in rim of a cup basis, hole surrounding is installed and uses brick code real, reserves the operating surface that prefabricated post is installed, foundation ditch back-filling in layers after stacking bricks, every layer of backfill thickness is 200mm and tamps;
Step 2, member undersetting stacks fragment of brick 1, folded brick pier under thin webbed girder, every stacked brick pier and adjacent stacked brick pier are vertically same;
Step 3, installation form, first from one end, start order thin webbed girder soffit formwork 2 is installed, with to wedge leveling thin webbed girder soffit formwork 2, bracing wire alignment is the thin webbed girder soffit formwork 2 of leveling, and thin webbed girder side template 3 is installed, and prefabricated thin webbed girder cage of reinforcement is installed, built-in fitting in thin webbed girder is installed, the thin abdomen of thin webbed girder place slope shape combination wooden form 4 is installed and is firmly connected with thin webbed girder side template 3;
Step 4, concreting, concreting starts from thin webbed girder one end and advances successively, during blanking, protect built-in fitting, must not overexert and cause built-in fitting displacement, 4 stickfast of thin abdomen place slope shape combination wooden form prevent because concrete vibrating floats on thin webbed girder side template 3, and then concrete edge blanking limit poker vibrator vibration compacting uses that wooden crab plasterer's trowel is floating, compacting, troweling;
Step 5, after concrete initial set, first remove thin webbed girder side template 3, and press pouring order of concrete blocked breaking except thin webbed girder soffit formwork 2, thin webbed girder soffit formwork 2 of every dismounting superpose immediately fragment of brick 1 padded and use wedge 5 leveled up after, with two hand hammers, touch wedge 5 two ends simultaneously, make wedge 5 fully stressed;
Step 6, concrete curing, concreting starts to cover straw bag water seasoning in complete 12 hours, and at the thin abdomen of thin webbed girder place water storing conservation, curing time must not be less than 14 days.
In concrete, adopt strength grade to be not less than portland cement or the Composite portland cement of 42.5 grades, meet the regulation of GB50204.
It is that 0.35-0.5mm mud content is not more than 1% natural sand that medium sand adopts average grain diameter, and the extra large sand that must not use chloride content to exceed standard must detect the Sand for Concrete of marching into the arena before using, and can use after qualified.
Rubble should meet grain composition requirement, and mud content is less than or equal to 1%, and needle-like sheet content is less than or equal to 15%, and crush index soundness should meet the requirements, and sulfide and sulphate content are less than 1%.
All Admixtures should meet GB8076 country current standard.
Concrete can adopt commercial concrete, admixture retarding agent in commercial concrete, volume is strictly controlled, construction requirement condenses in 6H, concrete coagulating time has been considered the factors such as requirement of commercial concrete manufacturer dead time and intensity apart from on-the-spot distance, temperature, while building, fully control concrete final setting time well, facilitate the allocation of the labour force, control member striking time.
Described thin webbed girder soffit formwork 2 is combined by wooden a tree, used in making timber for boats and veneer, thin webbed girder soffit formwork 2 comprises 2 end soffit formworks and some middle parts soffit formwork, end soffit formwork width is 500mm, length is thin webbed girder width, middle part soffit formwork width is 700mm, length is thin webbed girder width, wood a tree, used in making timber for boats is pine a tree, used in making timber for boats, the thin abdomen place of thin webbed girder adopts whole slope wooden form integral manufacturing to be beneficial to moulding and form removable, adopt the slope shape combination wooden form of wooden a tree, used in making timber for boats and veneer sectional making lightweight, veneer plate width is large, without splicing, plate face is smooth, splicing is tight, load-carrying properties are good, easily processing, saw cuts simple, concrete surface good water-retaining property, the outer side seams of concrete thin webbed girder of building is few, lines are straight, can reach the requirement of clear-water concrete.
Wood a tree, used in making timber for boats adopts 50X90mm specification pine a tree, used in making timber for boats, and wooden a tree, used in making timber for boats must not select fragility, distortion, knaur to run through whole wooden a tree, used in making timber for boats section, water content exceeds standard and holds yielding timber, and its moisture content must not surpass 8%.
Veneer adopts thickness 15mm, selects that bonding adhesive gummed intensity is good, water-fast, sun-resistant, heat-resisting, corrosion-resistant, intensity is high, durability is strong, well behaved pine veneer.
The standard brick that stacks fragment of brick 1 use common brick or sand lime brick specification 240 * 115 * 53mm under member, folded brick is selected the fragment of brick 1 of surfacing.
To wedge 5, adopt the short wooden a tree, used in making timber for boats of pine to be made, specification is 50 * 50～0 * 240mm, and every two major part wedges are with respect to becoming one group to wedge 5, and every group of folded brick top adopts a pair of to wedge 5.
Claims (3)
1. prefabricated assembled member thin webbed girder is folded waters quick form removal construction method, it is characterized in that, comprise the following steps,
Step 1, thin webbed girder is built position levelling of the land compacting, at the reserved post in rim of a cup basis, hole surrounding is installed and uses brick code real, reserves the operating surface that prefabricated post is installed, foundation ditch back-filling in layers after stacking bricks, every layer of backfill thickness is 200mm and tamps;
Step 2, member undersetting stacks fragment of brick, folded brick pier under thin webbed girder, every stacked brick pier and adjacent stacked brick pier are vertically same;
Step 3, installation form, first from one end, start order thin webbed girder soffit formwork is installed, with to wedge leveling thin webbed girder soffit formwork, bracing wire alignment is the soffit formwork of leveling, and thin webbed girder side template is installed, and prefabricated thin webbed girder cage of reinforcement is installed, built-in fitting in thin webbed girder is installed, the thin abdomen of thin webbed girder place slope shape combination wooden form is installed and is firmly connected with thin webbed girder side template;
Step 4, concreting, concreting starts from thin webbed girder one end and advances successively, during blanking, protect built-in fitting, must not overexert and cause built-in fitting displacement, the stickfast of thin abdomen place slope shape combination wooden form prevents because concrete vibrating floats on thin webbed girder side template, and then concrete edge blanking limit poker vibrator vibration compacting uses that wooden crab plasterer's trowel is floating, compacting, troweling;
Step 5, after concrete initial set, first removes thin webbed girder side template, and press pouring order of concrete blocked breaking except thin webbed girder soffit formwork, thin webbed girder soffit formwork of every dismounting superpose immediately fragment of brick padded and use flat to wheel chock after, with two hand hammers, touch wedge two ends simultaneously, make wedge fully stressed;
Step 6, concrete curing, concreting starts to cover straw bag water seasoning in complete 12 hours, and at the thin abdomen of thin webbed girder place water storing conservation, curing time must not be less than 14 days.
2. prefabricated assembled member thin webbed girder according to claim 1 is folded waters quick form removal construction method, it is characterized in that, adopts intensity to be not less than portland cement or the Composite portland cement of 42.5 grades in described concrete.
3. prefabricated assembled member thin webbed girder according to claim 1 is folded and is watered quick form removal construction method, it is characterized in that, described thin webbed girder soffit formwork is combined by wooden a tree, used in making timber for boats and veneer, thin webbed girder soffit formwork comprises 2 end soffit formworks and some middle parts soffit formwork, end soffit formwork width is 500mm, and length is thin webbed girder width, and middle part soffit formwork width is 700mm, length is thin webbed girder width, and wooden a tree, used in making timber for boats is pine a tree, used in making timber for boats.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410439446.4A CN104196242A (en) | 2014-09-01 | 2014-09-01 | Stack-pouring fast form stripping construction method for prefabricated member thin webbed girders |
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| CN201410439446.4A CN104196242A (en) | 2014-09-01 | 2014-09-01 | Stack-pouring fast form stripping construction method for prefabricated member thin webbed girders |
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| CN104196242A true CN104196242A (en) | 2014-12-10 |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN116791590A (en) * | 2023-06-19 | 2023-09-22 | 中铁一局集团(广州)建设工程有限公司 | Factory prefabricated diaphragm wall quick-dismantling template device and use method |
-
2014
- 2014-09-01 CN CN201410439446.4A patent/CN104196242A/en active Pending
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN116791590A (en) * | 2023-06-19 | 2023-09-22 | 中铁一局集团(广州)建设工程有限公司 | Factory prefabricated diaphragm wall quick-dismantling template device and use method |
| CN116791590B (en) * | 2023-06-19 | 2024-03-26 | 中铁一局集团(广州)建设工程有限公司 | Factory prefabricated diaphragm wall quick-dismantling template device and use method |
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Application publication date: 20141210 |