CN106436732B - A kind of strip footing is replaced as the reinforcement means and ruggedized construction of raft foundation - Google Patents
A kind of strip footing is replaced as the reinforcement means and ruggedized construction of raft foundation Download PDFInfo
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- CN106436732B CN106436732B CN201610232390.4A CN201610232390A CN106436732B CN 106436732 B CN106436732 B CN 106436732B CN 201610232390 A CN201610232390 A CN 201610232390A CN 106436732 B CN106436732 B CN 106436732B
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- strip footing
- foundation
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- reinforcement means
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- E—FIXED CONSTRUCTIONS
- E02—HYDRAULIC ENGINEERING; FOUNDATIONS; SOIL SHIFTING
- E02D—FOUNDATIONS; EXCAVATIONS; EMBANKMENTS; UNDERGROUND OR UNDERWATER STRUCTURES
- E02D27/00—Foundations as substructures
- E02D27/01—Flat foundations
- E02D27/08—Reinforcements for flat foundations
Abstract
The invention discloses reinforcement means and ruggedized construction that a kind of strip footing is replaced as raft foundation, reinforcement means includes the following steps: that (1) digs out two foundation pits on the two sides ground of every strip footing respectively；(2) length direction several holes that successively spacing distance arranges along strip footing are dug out respectively on the basis of every bar shaped；(3) the outrigger framework of steel reinforcement bound is placed in each hole；(4) the two side bar frameworks of steel reinforcement bound are placed respectively in the two sides foundation pit of every strip footing；(5) mat foundation reinforcing bar is bound between two side bar skeletons between two strip footings；(6) casting concrete in described hole and the foundation pit.The reinforcement means plays contining function to former strip footing, does not destroy original structure in construction, the reinforcing of equivalent increasing section has been carried out to original structure, the raft foundation of formation more efficiently bears upper load.
Description
Technical field
The present invention relates to building construction fields, and in particular to a kind of reinforcement means and ruggedized construction of strip footing.
Background technique
It is some to be related to people's livelihood due to the needs of social development, it is related to great national project and the city of environment
Planned project is conflicted in construction with existing building, the ancient building of some long histories have uniqueness with can not be
Natural disposition.The reinforced protection to these buildings in China at present.In addition, at present in civil buildings and industrial building, because building
It builds the reasons such as function change, the bearing capacity increase of object and needs to carry out original building strengthening construction, to meet requirement, basis
It is constructure ground supporting member below, it subjects the whole load that building superstructure hands down, and is passing to ground
Base.Therefore strengthening of foundation is related to the safety of whole building, we protects ancient building or civilian industry building adds
Gu when, it is necessary first to basis is reinforced.
The method that strengthening of foundation has a variety of reinforcings, the general theory of these reinforcement means are not change original basis form,
And underpinning structure, foundation structure is strengthened after reinforcing.When carrying out a base strengthening of foundation, generally using increasing section and
Anchor Rod Static method, both reinforcement means require to disturb original basis when reinforcing.For some ages
Building remote, base basis aging intensity is insufficient, if there is disturbance to have certain risk when reinforcing.Using increasing section
When method increases strip footing, structure forms an entirety to bear upper load jointly after original structure and reinforcing, once
Seriously this reinforcement means has little effect original structure intensity frequently.When using Anchor Rod Static, the intensity of ground is increased, from
And a former base is reinforced, this method for strengthening does not increase a rheobase, and when base underlying strength wretched insufficiency is added using this
Solid method, static pressed pile, which is easy to produce lateral pressure in construction, certain risk.
How the structural strength that one kind effectively could reinforce to strip footing and be not only restricted to strip footing is provided
Strip footing ruggedized construction be building field of reinforcement urgent need to resolve the problem of.
Summary of the invention
In order to solve the above technical problems, goal of the invention of the invention, which is to provide a kind of strip footing, is replaced as raft foundation
Reinforcement means and ruggedized construction, the reinforcement means contining function is played to former strip footing, construction when do not destroy former knot
Structure, the reinforcing of equivalent increasing section has been carried out to original structure, and the raft foundation of formation more efficiently bears upper load.
For achieving the above object, the present invention provides technical solution below: a kind of strip footing is replaced as raft plate base
The reinforcement means of plinth, includes the following steps:
(1) two foundation pits are dug out respectively on the two sides ground of every strip footing, wherein positioned at two adjacent bar shaped bases
Two foundation pits between plinth are connected；
(2) dug out respectively on the basis of every bar shaped along strip footing length direction successively spacing distance arrangement it is several
A hole, wherein the two sides side of each hole perforation strip footing；
(3) the outrigger framework of steel reinforcement bound is placed in each hole；
(4) the two side bar frameworks of steel reinforcement bound are placed respectively in the two sides foundation pit of every strip footing, wherein choose
The both ends of beam reinforcement cages are each passed through two side bar frameworks of steel reinforcement positioned at its two sides；
(5) mat foundation reinforcing bar is bound between two side bar skeletons between two strip footings；
(6) casting concrete in described hole and the foundation pit.
In above-mentioned technical proposal, in step (1), during earth excavation, square wall on the basis of bar shaped need to be supported to go forward side by side
Row foundation pit slope, cannot disturb strip footing, and after earth excavation, the bed course in foundation pit, which is dug, to be poured.
In above-mentioned technical proposal, in step (5), horse is set between the lower layer's reinforcing bar and top bars of mat foundation reinforcing bar
Stool.
In above-mentioned technical proposal, in step (6), the concrete surface height that the feed opening distance of concrete is poured is more than
At 2 meters, poured using string bucket or chute.
In above-mentioned technical proposal, in step (6), the layering that pours of concrete is carried out continuously and vibrates, lift height
It is 1-1.5 times of vibrator effect partial length, lift height is no more than 50 centimetres, and the mobile spacing of vibrator, which is not more than, vibrates
1.5 times of device operating radius, vibrate a upper layer concrete when should be inserted into 5 centimetres of next layer concrete.
In above-mentioned technical proposal, in step (6), when concrete is unable to continuous placing and interval time and is greater than 2 hours, carry out
Treatment of construction joints, covers concrete within 12 hours after the completion of the pouring of concrete and moisture-keeping maintaining.
The present invention also provides another technical solutions: a kind of strip footing is replaced as the ruggedized construction of raft foundation,
Be characterized in that, the ruggedized construction include along the strip footing length direction extend and along the width of the strip footing
Direction is separately positioned on two side bar frameworks of steel reinforcement of the two sides of the strip footing, prolongs along the width direction of the strip footing
Stretch and along the length direction of the strip footing several holes that successively spacing distance is provided in the strip footing, pass through
It wears described hole and both ends extends respectively in two side bar frameworks of steel reinforcement of the two sides of the strip footing
Several outrigger frameworks of steel reinforcement and both ends extend respectively to two reinforcing bars being located between two strip footings
Several mat foundation reinforcing bars in frame, described hole and outrigger framework of steel reinforcement part casting concrete on its inside are constituted
Through several outriggers of the strip footing, the framework of steel reinforcement, outrigger framework of steel reinforcement part and position on its inside
The mat foundation reinforcing bar part casting concrete of side constitutes side bar, the strip footing, the outrigger and the side in the inner
Beam collectively forms the beam of raft foundation, is arranged between two strip footings and is located between two frameworks of steel reinforcement
Mat foundation reinforcing bar part casting concrete constitute raft foundation bottom plate.
In above-mentioned technical proposal, the side bar framework of steel reinforcement include along the strip footing length direction extend and
The stirrup of the longitudinal reinforcement and the binding longitudinal reinforcement that are arranged in perpendicular.
In above-mentioned technical proposal, several strip footings join setting, several side bar frameworks of steel reinforcement in length and breadth
The bottom plate between two strip footings and being located between two side bar frameworks of steel reinforcement is arranged in handover setting in length and breadth
Reinforcement foundation part is arranged in a crisscross manner.
In above-mentioned technical proposal, several described holes are successively spaced 0.5~1.5 along the length direction of the strip footing
Rice distance setting.
Due to the above technical solutions, the present invention has the following advantages over the prior art: the present invention passes through in item
The two sides on shape basis increase side bar, and the length direction spacing along strip footing increases outrigger, and reinforcing bar penetrates drawknot both sides side bar, side
Steel tie forms bottom plate between beam, and side bar and bottom plate form raft foundation, which plays tightly former strip footing
Hoop effect does not destroy original structure in construction, the reinforcing of equivalent increasing section has been carried out to original structure, the raft foundation of formation is more
Add and effectively bears upper load.
Detailed description of the invention
In order to more clearly explain the embodiment of the invention or the technical proposal in the existing technology, to embodiment or will show below
There is attached drawing needed in technical description to be briefly described, it should be apparent that, the accompanying drawings in the following description is only this
Some embodiments of invention for those of ordinary skill in the art without creative efforts, can be with
It obtains other drawings based on these drawings.
Fig. 1 is the structural schematic diagram of former strip footing disclosed by the invention；
Fig. 2 is the structural schematic diagram for the ruggedized construction that strip footing disclosed by the invention is replaced as raft foundation；
Fig. 3 is the schematic diagram for the ruggedized construction that one of strip footing disclosed by the invention is replaced as raft foundation.
Wherein, 100, strip footing；200, side bar framework of steel reinforcement；210, longitudinal reinforcement；220, stirrup；300, outrigger reinforcing bar
Skeleton；400, mat foundation reinforcing bar；500, side bar；600, the beam of raft foundation；700, the bottom plate of raft foundation.
Specific embodiment
Following will be combined with the drawings in the embodiments of the present invention, and technical solution in the embodiment of the present invention carries out clear, complete
Site preparation description.Obviously, described embodiments are only a part of the embodiments of the present invention, instead of all the embodiments.It is based on
Embodiment in the present invention, it is obtained by those of ordinary skill in the art without making creative efforts every other
Embodiment shall fall within the protection scope of the present invention.
Embodiment one:
A kind of strip footing is replaced as the reinforcement means of raft foundation, includes the following steps:
(1) two foundation pits are dug out respectively on the two sides ground of every strip footing, wherein positioned at two adjacent bar shaped bases
Two foundation pits between plinth are connected；
(2) dug out respectively on the basis of every bar shaped along strip footing length direction successively spacing distance arrangement it is several
A hole, wherein the two sides side of each hole perforation strip footing；
(3) the outrigger framework of steel reinforcement bound is placed in each hole；
(4) the two side bar frameworks of steel reinforcement bound are placed respectively in the two sides foundation pit of every strip footing, wherein choose
The both ends of beam reinforcement cages are each passed through two side bar frameworks of steel reinforcement positioned at its two sides；
(5) mat foundation reinforcing bar is bound between two side bar skeletons between two strip footings；
(6) casting concrete in described hole and the foundation pit.
1, earthwork
(1) excavation and construction is carried out in the two sides of base, does not disturb former item without impinging on former base as far as possible in excavation and construction
Base.
(2) after earth excavation, reduce the horizontally-supported of a base, therefore bed course will dig and pour.
(3) slope is strict with when excavating, it should be noted that the support of wall, and pay attention to firm and Tu Bi the variation of support
2, the positioning of outrigger position, installation
(1) outrigger position is 1 meter of interval, releases position line according to drawing, and outrigger position cannot be excessively intensive, be easy to cause
The damage of upper wall body.
(2) outrigger should pass through the side bar on both sides, fix four reinforcing bars with stirrup in hole, guarantee that the position of reinforcing bar exists
It does not shift when construction.
(3) outrigger hole position is not easy to pour, and should sufficiently vibrate when pouring.
3, the binding of side bar and whole plate reinforcing bar
(1) the entering of reinforcing steel bar must have product certificate, batch number and laboratory report list, and quality certificate must be with
Reinforcing bar is marched into the arena together, is sampled as required after the entering of reinforcing steel bar and is carried out mechanical property retrial, could use after qualified.
(2) this construction joint reinforcing bar is using binding connection, and for the beam on base side to drawing, whole plate reinforcement foundation and side bar anchoring are deep
Degree is met the requirements.
(3) when being laid with baseplate reinforcing bar, reinforcing bar should be bound totally, and protective layer cushion block spacing 600*600 puts in blossom type and wants
Seek a vertical and horizontal line.
(4) split heads is set between bottom plate lower layer reinforcing bar and top bars.
4, reinforcement construction inspection of quality
(1) bending angle of the stirrup hook of side bar should be 135 °.
(2) stress smaller part is preferably arranged in the connector of reinforcing bar.Same Reinforcement should not be arranged two or two with
Top connection.Connector end to reinforcing bar bends up 10 times that distance a little is no less than bar diameter.
(3) it when binding baseplate reinforcing bar, is first laid with and short re-lays long span reinforcing bar across reinforcing bar.
(4) it is the lap of splice that the length of reinforcing bar binding lap joint jointing, which is 1.3L(L), all lap joint midpoints
Lap joint in the jointing length belongs to same jointing.In same jointing, longitudinal reinforcement overlap joint
Connector area percentage is the Reinforcement area of section and whole longitudinal stresses for having lap joint in the section
5, side bar and whole plate basis are poured
(1) cement, water used in concrete, aggregate, additive etc. have to comply with job specfication and the regulation in relation to standard.
(2) match ratio, measuring raw materials of concrete, stirring, maintenance and treatment of construction joints, it is necessary to meet job specfication
Regulation.1) the concrete surface height that the feed opening distance of concrete is poured must not exceed 2m.When falling as freely inclined more than 2m,
It should be using string bucket or chute.2) concrete is poured to be layered and is carried out continuously, and generic hierarchical is long with a thickness of vibrator effect partial
1.25 times of degree, maximum are no more than 50cm.3) it should be inserted with poker vibrator and be pulled out slowly fastly, slotting point answers evenly distributed, point-by-point shifting
Dynamic, sequence carries out, and must not omit, accomplish vibration compacting.Mobile spacing is not more than 1.5 times of vibrating spear operating radius.On vibrating
Lower layer 5cm should be inserted at one layer, to remove the seam of two interlayers.The mobile spacing of vibration board, should ensure that vibrator
Plate covers the edge to have vibrated.4) when concrete is unable to continuous placing, generally more than 2h should be by treatment of construction joints.5) it pours
When concrete, it should often notice that whether there is or not ambulatories for observation template, bracket, pipeline and preformed hole, built-in fitting.When discovery has change
When shape, displacement, it should stop pouring immediately, and handle well in time, be further continued for pouring.
6, the maintenance of concrete is completed
(1) simultaneously moisture-keeping maintaining should be covered to concrete within the 12h after being poured；
(2) it the time of concrete water seasoning: is mixed to using portland cement, ordinary portland cement or portland slag cement
The concrete of system, not be less than 7d；To mixing retarding additive or having the concrete of seepage resistance demand, 14d must not be less than；
(3) irrigation times should be able to keep concrete to be in moisture state；Concrete curing water should be same with mixing water phase；
(4) concrete of plastic cloth covering curing is used, open all surfaces should cover tightly, and be kept for plastic cloth year have
Condensed water；
(5) concrete that summer pours, it is improper such as to conserve, and will cause concrete strength reduction or plastic shrinkage cracks etc. occurs in surface, therefore,
It must reinforce the maintenance to concrete.
Referring to Fig. 1 to Fig. 3, as shown in legend therein, the ruggedized construction of raft foundation is replaced as a kind of strip footing,
Above-mentioned ruggedized construction includes the length direction extension along strip footing 100 and sets respectively along the width direction of strip footing 100
Set two frameworks of steel reinforcement 200 in the two sides of strip footing 100, the width direction along strip footing 100 extends and along bar shaped
Length direction several hole (not shown)s that successively spacing distance is provided in strip footing 100 on basis 100 run through
Above-mentioned hole and both ends extend respectively to positioned at strip footing 100 two sides two frameworks of steel reinforcement 200 in several choose
Beam reinforcement cages 300 and both ends extend respectively to several in two frameworks of steel reinforcement 200 between two strip footings 100
Mat foundation reinforcing bar 400, above-mentioned hole and outrigger framework of steel reinforcement part casting concrete on its inside, which are constituted, runs through item
Several outrigger (not shown)s on shape basis 100, framework of steel reinforcement 200, outrigger framework of steel reinforcement part on its inside with
And mat foundation reinforcing bar part casting concrete on its inside constitutes side bar 500, strip footing 100, above-mentioned outrigger and
Side bar 500 collectively forms the beam 600 of raft foundation, is arranged between two strip footings 100 and is located at two frameworks of steel reinforcement
Mat foundation reinforcing bar part casting concrete between 300 constitutes the bottom plate 700 of raft foundation.
Framework of steel reinforcement 200 includes extending 210 along the length direction of strip footing 100 and arranging in perpendicular vertical
To the stirrup 220 of reinforcing bar and binding longitudinal reinforcement 210.
Several strip footings 100 join setting in length and breadth, and several frameworks of steel reinforcement 200 join setting in length and breadth, are arranged two
Between the strip footing and mat foundation reinforcing bar part that is located between two frameworks of steel reinforcement is arranged in a crisscross manner.
Several above-mentioned holes are successively spaced 0.5~1.5 meter of distance setting along the length direction of strip footing 100.
The above are the descriptions to the embodiment of the present invention to keep this field special by the foregoing description of the disclosed embodiments
Industry technical staff can be realized or using the present invention.Various modifications to these embodiments carry out those skilled in the art
Saying will be apparent, and the general principles defined herein can be the case where not departing from the spirit or scope of the present invention
Under, it realizes in other embodiments.Therefore, the present invention will not be limited to the embodiments shown herein, but to accord with
Close the widest scope consistent with the principles and novel features disclosed herein.
Claims (6)
1. the reinforcement means that a kind of strip footing is replaced as raft foundation, which comprises the steps of:
(1) two foundation pits are dug out respectively on the two sides ground of every strip footing, wherein positioned at two adjacent strip footings it
Between two foundation pits be connected；
(2) it is dug out respectively on the basis of every bar shaped along length direction several holes that successively spacing distance arranges of strip footing
Hole, wherein the two sides side of each hole perforation strip footing；
(3) the outrigger framework of steel reinforcement bound is placed in each hole；
(4) the two side bar frameworks of steel reinforcement bound are placed respectively in the two sides foundation pit of every strip footing, wherein outrigger steel
The both ends of tendons skeleton are each passed through two side bar frameworks of steel reinforcement positioned at its two sides；
(5) mat foundation reinforcing bar is bound between two side bar skeletons between two strip footings；
(6) casting concrete in described hole and the foundation pit.
2. reinforcement means according to claim 1, which is characterized in that in step (1), during earth excavation, need to support
Wall above strip footing simultaneously carries out foundation pit slope, cannot disturb strip footing, and after earth excavation, the bed course in foundation pit is dug
Pour.
3. reinforcement means according to claim 1, which is characterized in that in step (5), lower layer's reinforcing bar of mat foundation reinforcing bar
Split heads is set between top bars.
4. reinforcement means according to claim 1, which is characterized in that in step (6), the feed opening distance of concrete is poured
When the concrete surface height built is more than 2 meters, poured using string bucket or chute.
5. reinforcement means according to claim 1, which is characterized in that in step (6), concrete pour layering continuously into
It goes and vibrates, lift height is 1-1.5 times of vibrator effect partial length, and lift height is no more than 50 centimetres, vibrates
The mobile spacing of device is not more than 1.5 times of acting radial of vibrator, vibrate a upper layer concrete when should be inserted into next layer concrete 5
Centimetre.
6. reinforcement means according to claim 1, which is characterized in that in step (6), concrete be unable to continuous placing and
When being greater than 2 hours the time, treatment of construction joints is carried out, concrete is covered within 12 hours after the completion of the pouring of concrete
Cover simultaneously moisture-keeping maintaining.
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2016200593054 | 2016-01-21 | ||
| CN201620059305 | 2016-01-21 |
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| Publication Number | Publication Date |
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| CN106436732A CN106436732A (en) | 2017-02-22 |
| CN106436732B true CN106436732B (en) | 2019-03-12 |
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|---|---|---|---|
| CN201620313334.9U Active CN205576955U (en) | 2016-01-21 | 2016-04-14 | Raft foundation's reinforced structure is displaced into to strip footing |
| CN201610232390.4A Active CN106436732B (en) | 2016-01-21 | 2016-04-14 | A kind of strip footing is replaced as the reinforcement means and ruggedized construction of raft foundation |
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| CN201620313334.9U Active CN205576955U (en) | 2016-01-21 | 2016-04-14 | Raft foundation's reinforced structure is displaced into to strip footing |
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Families Citing this family (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN205576955U (en) * | 2016-01-21 | 2016-09-14 | 苏州中固建筑科技股份有限公司 | Raft foundation's reinforced structure is displaced into to strip footing |
| CN106988337B (en) * | 2017-04-20 | 2019-02-01 | 南京工大桥隧与轨道交通研究院有限公司 | It is a kind of for reducing the reinforcement means of bar shaped shallow foundation house differential settlement |
| CN109308363B (en) * | 2017-07-28 | 2023-04-07 | 广联达科技股份有限公司 | Raft board slope-releasing construction method and system and computer device |
| CN111456061A (en) * | 2020-04-01 | 2020-07-28 | 中国建筑西南勘察设计研究院有限公司 | Existing raft foundation perforating and repairing construction method |
| CN114922171B (en) * | 2022-04-28 | 2023-12-29 | 浙江宏日泰耐克新材料科技有限公司 | Foundation reinforcing structure of multi-layer masonry building and construction method |
Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH11256592A (en) * | 1998-03-16 | 1999-09-21 | Misawa Homes Co Ltd | Foundation structure of building and method for constructing the same |
| JP2001220890A (en) * | 2000-02-07 | 2001-08-17 | Kubota House Corp | Form unit for continuous footing, and method for constructing building foundation using the same |
| JP2009127231A (en) * | 2007-11-21 | 2009-06-11 | Mitsui Home Co Ltd | Continuous footing reinforcing structure, its construction method, and reinforcing metal |
| JP2010043439A (en) * | 2008-08-11 | 2010-02-25 | Hiroshi Kitagawa | Method of reinforcing foundation of existing wooden house |
| CN101922158A (en) * | 2010-04-01 | 2010-12-22 | 同济大学 | Device and method for integral underpinned vibration isolation of subway underpass building foundation |
| CN205576955U (en) * | 2016-01-21 | 2016-09-14 | 苏州中固建筑科技股份有限公司 | Raft foundation's reinforced structure is displaced into to strip footing |
-
2016
- 2016-04-14 CN CN201620313334.9U patent/CN205576955U/en active Active
- 2016-04-14 CN CN201610232390.4A patent/CN106436732B/en active Active
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH11256592A (en) * | 1998-03-16 | 1999-09-21 | Misawa Homes Co Ltd | Foundation structure of building and method for constructing the same |
| JP2001220890A (en) * | 2000-02-07 | 2001-08-17 | Kubota House Corp | Form unit for continuous footing, and method for constructing building foundation using the same |
| JP2009127231A (en) * | 2007-11-21 | 2009-06-11 | Mitsui Home Co Ltd | Continuous footing reinforcing structure, its construction method, and reinforcing metal |
| JP2010043439A (en) * | 2008-08-11 | 2010-02-25 | Hiroshi Kitagawa | Method of reinforcing foundation of existing wooden house |
| CN101922158A (en) * | 2010-04-01 | 2010-12-22 | 同济大学 | Device and method for integral underpinned vibration isolation of subway underpass building foundation |
| CN205576955U (en) * | 2016-01-21 | 2016-09-14 | 苏州中固建筑科技股份有限公司 | Raft foundation's reinforced structure is displaced into to strip footing |
Also Published As
| Publication number | Publication date |
|---|---|
| CN205576955U (en) | 2016-09-14 |
| CN106436732A (en) | 2017-02-22 |
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