CN109944265A - The method for carrying out foundation construction using concrete light scutum - Google Patents
The method for carrying out foundation construction using concrete light scutum Download PDFInfo
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- CN109944265A CN109944265A CN201910274806.2A CN201910274806A CN109944265A CN 109944265 A CN109944265 A CN 109944265A CN 201910274806 A CN201910274806 A CN 201910274806A CN 109944265 A CN109944265 A CN 109944265A
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Abstract
A method of foundation construction is carried out using concrete light scutum, stock mould wooden model is substituted using concrete light scutum, concrete light scutum can shift to an earlier date prefabricated also on-site cutting, after concrete light scutum is fixed on bed course with special glue, structure is dismissed in setting on the inside of concrete light scutum, and the next procedures such as waterproof and reinforced concrete construction can be done after banketing on the outside of concrete light scutum.The present invention is by the above method, and using concrete light scutum instead of traditional brick mold structure, construction technology is simple, fetal membrane forms standard, surface is smooth, saves one of technique of plastering, can directly do waterproof, reduce earthwork excavated volume, reduces the vertical transports such as tower crane investment；Labor intensity is small, high financial profit.
Description
Technical field
The invention is related to a kind of method of foundation construction, and in particular to a kind of to carry out basis using concrete light scutum
The method of construction.
Background technique
The position of the side forms such as existing foundation beam, cushion cap, raft plate generally uses brick mold to apply man-hour requirement according to following step
Rapid and method is constructed: being watered brick → levelling unwrapping wire → and is sent brick, mortar → pendulum brick sample → brickwork joint of laying bricks → repair, cleaning brick wall
→ sand finish.Since brick mold masonry project amount is larger, and the later period also needs the processes such as plastering, and investment manpower is more, the time
It is longer, higher cost.
Summary of the invention
In view of the above problems, the invention proposes a kind of method for carrying out foundation construction using concrete light scutum,
Stock mould wooden model is substituted using concrete light scutum, concrete light scutum can shift to an earlier date prefabricated also on-site cutting, concrete light scutum
After being fixed on bed course with special glue, structure is dismissed in setting on the inside of concrete light scutum, is filled out on the outside of concrete light scutum
The next procedures such as waterproof and reinforced concrete construction can be done after soil.One aspect of the present invention substantially reduces the duration, on the other hand
Save the cost again, achieves good economic benefit, so that research and development form this engineering method.
To achieve the goals above, the technical solution that the invention uses are as follows: carry out basis using concrete light scutum
The method of construction, which is characterized in that the steps include:
1) foundation beam and foundation pit soil layer: excavation foundation beam, cushion cap foundation trench, foundation beam, cushion cap foundation trench width are greater than foundation beam
Cross-sectional width, foundation pit earth layer surface is smooth.
2) concrete cushion is constructed.
3) line setting: releasing concrete light scutum inner edge position in foundation beam, cushion cap foundation trench, using steel nail hanging wire or
The mode for playing the line of ink marker is marked, as concrete light scutum installation site line.
4) concrete light scutum is installed:
4.1) concrete light scutum is fixedly mounted: the concrete light scutum cut out is mounted in position line, and using special
It is fixed on bed course with glue, erection sequence: at first cushion cap, at rear foundation beam；Upper and lower two pieces of cement plates connect edge joint position, corner
It is pasted using cement gel, and Cracking-proof belt is added to prevent from cracking；
4.2) reinforced concrete thistle board:
The concrete light scutum installed is reinforced: being cut into supporting clapboard with concrete light scutum, withstands on coagulation
On the inside of native thistle board；Or it is supported using interior branch structure；
4.3) backfill on the outside of concrete light scutum.
5) it pours basis: carrying out concrete foundation on the inside of concrete light scutum and pour.
In the step 2), method particularly includes: the casting concrete since one end, and answer continuous placing；Concrete pours
It builds to vibrate in rear 2h and finish, otherwise indwelling construction joint；When pouring height more than 2m, string bucket, elephant trunk should be used；Concrete vibrating is close
It after reality, puts down, is struck off with big thick stick, surface is rubbed with the hands with wooden float put down again by mark post inspection；The concrete poured, when maintenance, pay attention to
Covering and watering.
Cement gel with a thickness of 5-8mm in the step 4.1).
In the step 4.1), Cracking-proof belt specifically: Cracking-proof belt is with middle alkali or alkali-free fiber weaving yarns, through alkaline-resisting height
The upper and lower surfaces of the glass fibre of molecule lotion applicator, Cracking-proof belt are fixed with dedicated water earth rubber；Anticracking bandwidth is lap-joint two
Side is not less than 100mm, and length is construction member height, plays reinforcing, anti-crack function；
4.1.1) when adjacent concrete thistle board connects for the straight angle, the interior outside adjacent of concrete light scutum is equipped with anti-
Band is split, width is that lap-joint two sides are not less than 100mm, and length is construction member height；
4.1.2) when adjacent solidifying native thistle board is right angles, the interior outside adjacent of concrete light scutum is equipped with anticracking
Band, adjacent Cracking-proof belt form L-shaped structure, and width is that lap-joint two sides are not less than 100mm, and length is construction member height.
In the step 4.2):
4.2.1) at ground beam position, the supporting clapboard is oblique support plate, at every about 2m setting one, is against concrete
On the inside of thistle board；
4.2.2) at cushion cap position, when cushion cap width is less than or equal to 1500mm, internal temporary support, which is used, is not less than 50*
The flitch of 100mm respectively places a upright bar in cushion cap length, widthwise central position respectively, suitable for reading to use flitch right-angled intersection branch again
Support is in inside；When cushion cap width is greater than 1500mm, using the method for steel pipe and flitch combination diagonal brace, bed course is pre-buried before pouring
Reinforcing bar not less than 18, per a upright bar flitch not being arranged in about 1500mm, lower part carries out diagonal brace, diagonal brace angle 45- with steel pipe
60°。
In the step 4.3), after concrete light scutum is reinforced, when cement gel intensity reaches standard, concrete
Thistle board two sides gap is backfilled and is tamped simultaneously using original soil.
The concrete light board parameter is as follows: with a thickness of 90mm, drying shrinkage value < 0.39mm/m；Compression strength >
5.8Mpa；Surface density > 95.3kg/m3；Single-point hanging force > 1200N.
The invention has the beneficial effect that
1, installing foundation forms construction using concrete light scutum reduces masonry brick mold, brick when raft plate does waterproof
The working procedures such as loose tool plastering reduce excessive labour's investment, to reduce construction cost.
2, foundation forms construction is installed using concrete light scutum, due to no longer needing to build brick mold, increasing and hang
It fills each allocation and transportation amount, reduce earthwork excavated volume, while this strength of materials is high, good toughness, having can saw, can follow closely, can be bonded, never
It deforms, be easily installed, it is easy for construction, quick, it is shortened the construction period so reaching, the purpose accelerated construction progress.
3, installing foundation forms construction using concrete light scutum can tear open to avoid reversed beam, cushion cap plank sheathing under basis
Except when remove difficult problem.
4, after this material is compatible with plate, masonry, cement wall very securely, never crack, it is pollution-free to ambient enviroment,
It is formaldehydeless to discharge, is radiationless, it is to guarantee green construction.
Detailed description of the invention
Fig. 1: construction process figure.
Fig. 2: concrete light scutum branch angle connects state diagram.
Fig. 3: the concrete light scutum straight angle connects state diagram.
Fig. 4: structural schematic diagram at ground beam position.
Fig. 5: cushion cap width is less than or equal to plan view when 1500mm.
Fig. 6: cushion cap width is less than or equal to sectional view when 1500mm.
Fig. 7: cushion cap is partially larger than sectional view when being equal to 1500mm.
Specific embodiment
The method for carrying out foundation construction using concrete light scutum, which is characterized in that the steps include:
1) foundation beam and foundation pit soil layer: excavation foundation beam, cushion cap foundation trench, foundation beam, cushion cap foundation trench width are greater than foundation beam
Cross-sectional width, foundation pit earth layer surface is smooth.
2) concrete cushion is constructed；
Method particularly includes: the casting concrete since one end, and answer continuous placing；It has vibrated in 2h after concreting
Finish, otherwise indwelling construction joint；When pouring height more than 2m, string bucket, elephant trunk should be used；After concrete vibrating is closely knit, examined by mark post
Cha Shangping is struck off with big thick stick, surface is rubbed with the hands with wooden float put down again；The concrete poured, when maintenance, pay attention to covering and water.
3) line setting: releasing concrete light scutum inner edge position in foundation beam, cushion cap foundation trench, using steel nail hanging wire or
The mode for playing the line of ink marker is marked, as concrete light scutum installation site line.
4) concrete light scutum is installed:
4.1) concrete light scutum is fixedly mounted: the concrete light scutum cut out is mounted in position line, and using special
It is fixed on bed course with glue, erection sequence: at first cushion cap, at rear foundation beam；Two pieces of cement plate connection edge joint positions, corners use
Cement gel is pasted, and Cracking-proof belt is added to prevent from cracking.
The middle cement gel with a thickness of 5-8mm.
The Cracking-proof belt specifically: Cracking-proof belt is to be applied with middle alkali or alkali-free fiber weaving yarns through alkaline-resisting macromolecule emulsion
The upper and lower surfaces of the glass fibre covered, Cracking-proof belt are fixed with dedicated water earth rubber；Anticracking bandwidth is that lap-joint two sides are not less than
100mm, length are construction member height, play reinforcing, anti-crack function.
4.1.1) when adjacent concrete thistle board connects for the straight angle, the interior outside adjacent of concrete light scutum is equipped with anti-
Band is split, width is that lap-joint two sides are not less than 100mm, and length is construction member height；
4.1.2) when adjacent solidifying native thistle board is right angles, the interior outside adjacent of concrete light scutum is equipped with anticracking
Band, adjacent Cracking-proof belt form L-shaped structure, and width is that lap-joint two sides are not less than 100mm, and length is construction member height.
4.2) reinforced concrete thistle board:
The concrete light scutum installed is reinforced: being cut into supporting clapboard with concrete light scutum, withstands on coagulation
On the inside of native thistle board；Or it is supported using interior branch structure；
4.2.1) at ground beam position, the supporting clapboard is oblique support plate, at every about 2m setting one, is against concrete
On the inside of thistle board；
4.2.2) at cushion cap position, when cushion cap width is less than or equal to 1500mm, internal temporary support, which is used, is not less than 50*
The flitch of 100mm respectively places a upright bar in cushion cap length, widthwise central position respectively, suitable for reading to use flitch right-angled intersection branch again
Support is in inside；When cushion cap width is greater than 1500mm, using the method for steel pipe and flitch combination diagonal brace, bed course is pre-buried before pouring
Often a upright bar flitch is arranged no more than about 1500mm in reinforcing bar not less than 18, and lower part carries out diagonal brace, diagonal brace angle with steel pipe
45-60°。
4.3) backfill on the outside of concrete light scutum:
In the step 4.3), after concrete light scutum is reinforced, when cement gel intensity reaches standard, concrete
Thistle board two sides gap is backfilled and is tamped simultaneously using original soil.
5) it pours basis: carrying out concrete foundation on the inside of concrete light scutum and pour.
The concrete light board parameter is as follows: with a thickness of 90mm, drying shrinkage value < 0.39mm/m；Compression strength >
5.8Mpa；Surface density > 95.3kg/m3；Single-point hanging force > 1200N.
Embodiment 1:
The plot the B projects of Haishu District high bridge town Liangzhu-culture park 2, in comprehensive Guan Ce and before implementing company quality
It puts, domestic and international related advanced experience has been used for reference in summary, from the progress of engineering, cost, quality, safety angularly, and is filled
Divide the execution conditions in conjunction with Ningbo, formulates fabricated concrete light scutum brick fetal membrane construction method.This engineering method is applicable in
The side forms such as raft plate, foundation beam, cushion cap are not easy the position removed in architectural engineering, substitute brick tire using concrete light scutum
Mould plays save the cost, saves the duration, reduces the benefits such as labour's investment, environmentally protective.
Construction process:
One, construction flow chart is as shown in Figure 1.
Two, construction point:
1 cleaning foundation beam and foundation pit soil layer
According to construction drawing, excavation foundation beam, cushion cap foundation trench, foundation beam considers that the thickness of GPC plate and installment work face are wide
Degree, cushion cap foundation trench width should be greater than the cross-sectional width of foundation beam, and foundation pit earth layer surface is smooth.
The construction of 2 concrete cushions
Casting concrete answers continuous placing generally since one end, be such as carried out continuously area it is larger when, should be according to specification
Provide indwelling construction joint.It after concreting, should vibrate in time, must vibrate and finish in 2h, otherwise should be stayed by specification regulation
Set construction joint.When pouring height more than 2m, string bucket, elephant trunk should be used, to prevent concrete from segregation phenomenon occurs.Concrete vibrating
It after closely knit, check by mark post and above puts down, then struck off with big thick stick, surface is rubbed with the hands with wooden float put down again.When as relatively thin such as bed course, Ying Yan
Thickness is spread out and put in lattice control, and the concrete poured should be covered and be watered within curing period.
3 line settings
Concrete light scutum inner edge position is released in foundation beam, cushion cap foundation trench, is hung depending on construction condition using steel nail
Line or the mode for playing the line of ink marker are marked, as concrete light scutum installation site line.
The installation of 4 cement plates
The installation of 4.1 cement plates is fixed
Construction personnel must careful check of drawings, understand the absolute altitude of foundation beam size and cushion cap, the relationship of position and axis.
According to drawing data, concrete light scutum is cut out in advance.The concrete light scutum cut out is mounted in position line, is installed suitable
Sequence: at first cushion cap, then at foundation beam.Two pieces of cement plate connection edge joint positions, corners are pasted using prefab-form binder,
And Cracking-proof belt is added to prevent from cracking, prefabricated plate bond is stirred by cement and special glue, will be in strict accordance with explanation in construction
Book match ratio is stirred, and before gel strength does not reach standard, carries out finished product protection.Plate body connecting node figure is as schemed
Shown in 2-3:
4.2 reinforced concrete thistle boards
The concrete light scutum installed is reinforced, spacing 1500mm or so is in advance on the inside of concrete light scutum
Making sheet is cut into partition according to the span width of foundation beam, when preventing backfill and foundation beam concreting on the outside of concrete light scutum
It is deformed or is displaced.As shown in Figure 4.
Concrete light scutum is constructed section, such as Fig. 4 at ground beam position；Width at cushion cap position is less than or equal to 1500mm feelings
Under condition as illustrated in figs. 5-7；Width at cushion cap position is greater than in the case of 1500mm as shown in Figure 7.
Backfill on the outside of 5 concrete light scutums
After being reinforced to concrete light scutum, concrete light scutum two sides gap is backfilled and rammed simultaneously using original soil
It is real, before backfill, it is to be ensured that cement gel reaches design strength requirement.
Three, material and equipment requirement:
Material: according to material planning and construction site scheduling situation, be equipped with enough concrete light scutums, cement,
The materials such as prefabricated board special glue, steel pipe, flitch, Cracking-proof belt.
Solidifying soil thistle board: size 3000*600*90mm, drying shrinkage value 0.39mm/m, compression strength are not less than 5.8Mpa,
Surface density is greater than 95.3Kg/m3, shock resistance > 5 time.
Cement: using PC325 ordinary portland cement, and cement must not make moist agglomeration.
Prefabricated board special glue carries out live mixing, with using, and after mixing in 2 hours using finishing；When big temperature
When degree is more than 30 DEG C, should after mixing in 2 hours using finishing.
Four, economic benefit
Brick mold, wooden model are replaced using solidifying native thistle board, cumbersome brick-building art is eliminated, saves labour's investment,
Duration, save the cost are significantly shortened, there is good comprehensive benefit.
Solidifying soil thistle board substitution brick mold, wooden model benefit cost analysis are as shown in table 1.
Table 1: with 1 square of brick, the contrast of the economic effect table for 12 walls is built.
Claims (7)
1. the method for carrying out foundation construction using concrete light scutum, which is characterized in that the steps include:
1) foundation beam and foundation pit soil layer: excavation foundation beam, cushion cap foundation trench, foundation beam, cushion cap foundation trench width are greater than cutting for foundation beam
Face width, foundation pit earth layer surface are smooth；
2) concrete cushion is constructed；
3) line setting: releasing concrete light scutum inner edge position in foundation beam, cushion cap foundation trench, using steel nail hanging wire or bullet ink
The mode of line is marked, as concrete light scutum installation site line；
4) concrete light scutum is installed:
4.1) concrete light scutum is fixedly mounted: the concrete light scutum cut out is mounted in position line, and uses special glue
It is fixed on bed course, erection sequence: at first cushion cap, at rear foundation beam；Two pieces of cement plate connection edge joint positions, corners use cement
Glue is pasted, and Cracking-proof belt is added to prevent from cracking；
4.2) reinforced concrete thistle board:
The concrete light scutum installed is reinforced: being cut into supporting clapboard with concrete light scutum, withstands on concrete light
On the inside of scutum；Or it is supported using interior branch structure；
4.3) backfill on the outside of concrete light scutum；
5) it pours basis: carrying out concrete foundation on the inside of concrete light scutum and pour.
2. the method according to claim 1 for carrying out foundation construction using concrete light scutum, it is characterised in that: described
In step 2), method particularly includes: the casting concrete since one end, and answer continuous placing；It has vibrated in 2h after concreting
Finish, otherwise indwelling construction joint；When pouring height more than 2m, string bucket, elephant trunk should be used；After concrete vibrating is closely knit, examined by mark post
Cha Shangping is struck off with big thick stick, surface is rubbed with the hands with wooden float put down again；The concrete poured, when maintenance, pay attention to covering and water.
3. the method according to claim 1 for carrying out foundation construction using concrete light scutum, it is characterised in that: described
Cement gel with a thickness of 5-8mm in step 4.1).
4. the method according to claim 1 for carrying out foundation construction using concrete light scutum, it is characterised in that: described
In step 4.1), Cracking-proof belt specifically: Cracking-proof belt is to be coated with middle alkali or alkali-free fiber weaving yarns through alkaline-resisting macromolecule emulsion
The upper and lower surfaces of glass fibre, Cracking-proof belt are fixed with dedicated water earth rubber；Anticracking bandwidth is that lap-joint two sides are not less than 100mm,
Length is construction member height, plays reinforcing, anti-crack function；
4.1.1) when adjacent concrete thistle board connects for the straight angle, the interior outside adjacent of concrete light scutum is equipped with anticracking
Band, width are that lap-joint two sides are not less than 100mm, and length is construction member height；
4.1.2) when adjacent concrete thistle board is right angles, the interior outside adjacent of concrete light scutum is equipped with anticracking
Band, adjacent Cracking-proof belt form L-shaped structure, and width is that lap-joint two sides are not less than 100mm, and length is construction member height.
5. the method according to claim 1 for carrying out foundation construction using concrete light scutum, it is characterised in that: described
In step 4.2):
4.2.1) at ground beam position, the supporting clapboard is oblique support plate, at every about 2m setting one, is against concrete light
On the inside of plate；
4.2.2) at cushion cap position, when cushion cap width is less than or equal to 1500mm, internal temporary support, which is used, is not less than 50*
The flitch of 100mm respectively places a upright bar in cushion cap length, widthwise central position respectively, suitable for reading to use flitch right-angled intersection branch again
Support is in inside；When cushion cap width is greater than 1500mm, using the method for steel pipe and flitch combination diagonal brace, bed course is pre-buried before pouring
Often a upright bar flitch is arranged no more than 1500mm in reinforcing bar not less than 18, and lower part carries out diagonal brace with steel pipe, and diagonal brace angle is
45-60°。
6. the method according to claim 1 for carrying out foundation construction using concrete light scutum, it is characterised in that: described
In step 4.3), after concrete light scutum is reinforced, when cement gel intensity reaches standard, concrete light scutum two sides gap
It backfills and tamps simultaneously using original soil.
7. the method for carrying out foundation construction using concrete light scutum described in any one of -6 according to claim 1, special
Sign is: the concrete light board parameter is as follows: with a thickness of 90mm, drying shrinkage value < 0.39mm/m；Compression strength >
5.8Mpa；Surface density > 95.3kg/m3；Single-point hanging force > 1200N.
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Application publication date: 20190628 |