CN104005433B - Strengthening of foundation method and structure thereof - Google Patents
Strengthening of foundation method and structure thereof Download PDFInfo
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- CN104005433B CN104005433B CN201410209494.4A CN201410209494A CN104005433B CN 104005433 B CN104005433 B CN 104005433B CN 201410209494 A CN201410209494 A CN 201410209494A CN 104005433 B CN104005433 B CN 104005433B
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- reinforcing bar
- cover
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- original base
- bar
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Abstract
Novel foundation reinforcement means and structure thereof, belong to building reinforce technical field. Strengthening of foundation method, is formed and is enclosed cover by cast in original base periphery, applies embedding re-bar technique both are connected with enclosing at the surrounding exterior angle of described original base between cover, so realizes original base is reinforced. This foundation reinforcement structure, comprises original base and encloses cover, described basic exterior angle place with enclose contact position between cover and distribute and lay some bar plantings as basic and enclose the connector between cover. Adding the 6th reinforcing bar becomes equilibrant force S, has given full play to the space behavior that encloses cover, meanwhile, just, because of the existence of the 6th reinforcing bar, be able to bring into play the unbending that encloses the 3rd reinforcing bar in cover as fulcrum again. Fundamentally solve original base and enclose the reliable reinforcing between cover, technical measures are simple, ingenious, and effect power is aobvious, be " art is good for strength ", electric welding field in the tradition Scheme of Strengthening of defeasible this area, saves and uses the first reinforcing bar, and therefore construction working amount greatly reduces.
Description
Technical field
The present invention relates to building reinforce technical field, be applied to isolated footing under reinforced column and carry out floor space increase, concreteRelate to and enclose cover reinforcing implementation method and structure thereof.
Background technology
Isolated footing under reinforced column, floor space all adopts and encloses cover reinforcing mode while increase, outside basis, adds and encloses nooseStructure, makes base foundation become large.
As shown in Figure 1 and Figure 2, conventional method, in order to reinforce the acting in conjunction between original base and outer peripheral cover, need to wateredBefore building coagulation fortifield village cover, lengthen the reinforcing bar 71 in the original base 7 of bottom by welding, make it to extend acquisition the first reinforcing bar 1. For this reason,Workman needs respectively enclosing that cover surrounding bottom is chiseled through hole from outside to inside and welding extends each the steel burying in original basic 7Muscle 71, thus so close and numerous that all will to lengthen reinforcing bar by chiseling single welding in the whole cover surrounding bottom of enclosing, so that additional enclosingLink between cover 8 and original basis 7.
Because operating environment is to complete in underground, construction environment is severe, and operating condition is poor, and construction quality is difficult to ensure, humidityUnder environment, electric welding field is unsafe. In order to make up limitation, prior art often can only be considered in addition to add ancillary method again and be usedMake up the deficiency that lengthens welding scheme from basis, for example:
1) consider to add the second reinforcing bar 2, arrange radially, be positioned at concrete bodies and enclose the upper strata of overlapping thickness of slab: enclose for strengtheningCover globality, generally adoptsObviously diameter is bigger than normal.
2) consider to add the 3rd reinforcing bar 3, arrange radially, be positioned at concrete bodies and enclose the lower floor of cover thickness of slab: can bending resistance,But maximal bending moment is at cylinder limit, constructional reinforcementToo little inoperative, therefore also can only strengthen the globality of enclosing cover.
3) consider radially to add some the 4th reinforcing bars 4 at cylinder 9: reliably reach reinforced column for one makes substrate counter-forceAnd the construction measure arranging.
4) add some the 5th bar plantings 5 to form spacing 300～400 quincuncial arrangement at the face of overlooking perpendicular to basis: strengthen newThe adhesion of old concrete.
More than adopt the first reinforcing bar 1 lengthening to be connected with reinforcing bar 71 electric welding in former basis, additional various improvement measures simultaneously, executeWork workload great (especially completing welding the first reinforcing bar 1 in foundation bottom surrounding), what this was traditional encloses cover method for strengthening scheme limitationA lot of, have much room for improvement.
Summary of the invention
The object of the invention is to overcome the deficiencies in the prior art, disclose a kind of foundation reinforcement structure design, the inventive method is abandonedOriginally only extend reinforcing bar from bottom surrounding and amplify the thinking of entirety bottom, but expect utilizing space behavior, fundamentally solveBeing connected and overall work between overcoat and original base, reach the effect that art is good for strength. This invention is this area tradition sideThe breakthrough of method.
The technical scheme that the present invention provides is:
A kind of foundation reinforcement structure, comprises original base and encloses cover, it is characterized in that, at described basic exterior angle place and enclose between coverContact position distribute and lay some the 6th reinforcing bars 6 as basis and enclose the connector between cover.
Further optimize, described in enclose to be enclosed within and build the 3rd reinforcing bar 3 that front laying is arranged radially, enclose cover and build after moulding the 3rdReinforcing bar 3 is as a part of enclosing cover, and both are combined as a whole, and wherein the 3rd reinforcing bar 3 is as the arrangement of reinforcement of bending resistance component, and described theSix reinforcing bars 6 are positioned at the zone line of the 3rd reinforcing bar 3, and the 3rd reinforcing bar 3 bending resistance components that exist for of the 6th reinforcing bar 6 provide fulcrum,Strengthen the bending resistance that entirety is enclosed cover.
A kind of strengthening of foundation method, is formed and is enclosed cover by cast in original base periphery, it is characterized in that, Method And Principle is:The surrounding exterior angle of described original base is applied embedding re-bar technique between cover both is connected with enclosing, and so realizes original base is reinforced.
Further optimize, before cover is enclosed in cast, lay radially the 3rd reinforcing bar 3 as bending resistance component at original base, so,Described the 6th reinforcing bar 6 is for enclosing the 3rd reinforcing bar formation node in cover, as the newly-increased fulcrum of the 3rd reinforcing bar.
Above-mentioned strengthening of foundation method, is characterized in that, comprises the steps to implement:
One, enclose cover bar construction peripheral structure of original base, it is upper that this structure is made up of the second reinforcing bar 2, the 3rd reinforcing bar 3Lower two-layer steel bar layer, all layouts radially, enclose cover globality for strengthening, and the 3rd reinforcing bar of lower floor also plays bending resistance and does simultaneouslyWith. This step has been continued to use and has been enclosed cover reinforcement technique field conventional art, the contribution part of non-the present invention to prior art.
Two, interval punching successively on original base surrounding exterior angle.
Three, in hole, insert the 6th reinforcing bar 6, and add anchor adhesive the implantation end of the 6th reinforcing bar 6 is fixed in basic exterior angle;
Four, pour into by pouring type, the second reinforcing bar 2, the 3rd reinforcing bar 3 are formed to coagulation fortifield village cover in the lump, simultaneously described theThe other end of six reinforcing bars is implanted in coagulation fortifield village cover.
Technical solution of the present invention adopts at original base and encloses and between cover, adds the 6th reinforcing bar 6 and become equilibrant force S, has given full play toEnclose the space behavior of cover 8, meanwhile, just, because of the existence of the 6th reinforcing bar 6, be able to bring into play and enclose the 3rd steel in cover as fulcrum againThe unbending of muscle. Both one have been enough to fundamentally solve original base and enclose the reliable reinforcing between cover, technical measures aboveSimply, ingenious, effect power is aobvious, is " art is good for strength ", the electric welding field in the tradition Scheme of Strengthening of defeasible this area,Save and use the first reinforcing bar, also omitted a large amount of complementary reinforcing bars, therefore construction working amount greatly reduces, and consumptive material is few.
Brief description of the drawings
Fig. 1 encloses cover reinforcing construction schematic diagram when isolated footing floor space increases under existing techniques in realizing reinforced column.
Fig. 2 is the top view of Fig. 1.
Fig. 3 is that the present invention realizes under reinforced column and when isolated footing floor space increases, to enclose cover reinforcing construction schematic diagram.
Fig. 4 is the top view of Fig. 3.
Description of symbols: the first reinforcing bar 1, the second reinforcing bar 2, the three reinforcing bar 3, the four reinforcing bar 4, the five bar planting 5, the six reinforcing bars6, original base 7, the original reinforcing bar 71 in original base, encloses cover 8, and reinforced concrete fortifield village cage plate is thick 81, cylinder 9.
Detailed description of the invention
Below in conjunction with drawings and Examples, technical solution of the present invention is described further.
As shown in Figure 3, Figure 4, this strengthening of foundation design, its structural characterization is:
A kind of foundation reinforcement structure, comprises original base and encloses cover, it is characterized in that, at described basic exterior angle place and enclose between coverContact position distribute and lay some the 6th reinforcing bars 6 as basis and enclose the connector between cover.
Further optimize, described in enclose to be enclosed within and build the 3rd reinforcing bar 3 that front laying is arranged radially, enclose cover and build after moulding the 3rdReinforcing bar 3 is as a part of enclosing cover, and both are combined as a whole, and wherein the 3rd reinforcing bar 3 is as bending resistance component, described the 6th reinforcing bar6 are positioned at the zone line of the 3rd reinforcing bar 3, and the 3rd reinforcing bar 3 bending resistance components that exist for of the 6th reinforcing bar 6 provide fulcrum, strengthenEntirety enclose cover bending resistance.
Embodiment 1
Be furnished with some the 6th reinforcing bar 6, the six reinforcing bar 6 one end at the interval, place, surrounding exterior angle of original base and be fixed on original baseExterior angle, the other end is fixed on and encloses in cover with construction casting, for being fixedly connected with original base and enclosing cover, is the 3rd reinforcing bar 3 simultaneouslyIncrease a fulcrum. So, the present invention only apply embedding re-bar technique (for the routine techniques of this area maturation) can be efficient, reliableRealize original base and cast-in-place concrete and enclose being connected between cover. Put down for stress system has increased by one by laying the 6th reinforcing bar 6Weighing apparatus pulling force S, has given full play to 8 and has enclosed cover space behavior, vertical aobvious " art is good for strength " effect. Due to the 3rd reinforcing bar 3 " accident "Obtain a fulcrum, formed two power, the unbending of performance the 3rd reinforcing bar 3.
Force analysis and the technical solution of the present invention mechanism of action:
1, the present invention constructs design, has embodied on the one hand the utilization to reinforced concrete fortifield village cover space behavior.
Generally enclose cover angle larger, α >=40 °, therefore space behavior is very large, can, with the vertical stress component of its oblique pressure Nc, put downWeighing apparatus increases the subgrade reaction QKN/m=qKN/m of area portions2Xbm (as shown in Figure 3). Another balance pulling force S,Be core technology measure of the present invention, bear (as shown in Figure 3) by the 6th reinforcing bar 6.
Conventionally qk＝100KPa
q＝1.25(100KPa-20×2m)＝75KN/m2
If b=0.5m, Q=7.5x0.5=37.5KN/m
By triangle dynamic balance, figure obtains: Nc=61KN/m (enough)
Practical Φ 10200-393 > 190 (enough)
2, the present invention constructs design, and second aspect has embodied the utilization of the thick unbending of reinforced concrete fortifield village cage plate
The unbending that has had the 6th reinforcing bar 6 to enclose cover thickness of slab as pulling force fulcrum just can have been given full play to.
The same example:
Practical construction Φ 12200-565 > 213 (enough)
Fulcrum pulling force:
Practical Φ 10200-393 " 31 (enough far away)
3, the present invention constructs design, and the third aspect has embodied above-mentioned acting in conjunction
The unbending that encloses the space behavior of cover and enclose cover thickness of slab according to above-mentioned calculating is all effectively, and conventional method adopts extends theOne reinforcing bar 1 and welding thereof can be given abolishment. Actual loading situation is space behavior and unbending acting in conjunction.
Suppose that subgrade reaction improves 1 times, q=150KN/m2(design load).
Both bear q=75KN/m separately2,
: As=As0+As1＝190+31＝221mm2/ m (space behavior and calculating needs altogether as fulcrum)
Practical Φ 10200-393 > 221 still have a surplus fully, therefore technical solution of the present invention is reliable, application value is large.
Than prior art reinforcement means scheme, as shown in Figure 1 and Figure 2, it reinforces thinking is from strengthening foundation area, adoptingWith reinforcing bar 1 measure of amplifying, extending bottom, method is simple, and consolidation effect is limited, oblique pressure Nc, perpendicular to groundThe subgrade reaction Q of face, these two power cannot form balance, can not utilize space behavior. This conventional method, construction operation engineeringGreat, even if auxiliary other measures also fail to deal with problems in essence.
Claims (3)
1. a strengthening of foundation method, is formed and is enclosed cover by cast in original base periphery, it is characterized in that, described originalThe surrounding exterior angle on basis is applied embedding re-bar technique between cover both is connected with enclosing, and realization is reinforced original base;
Comprise the steps to implement:
One, enclose cover bar construction peripheral structure of original base, this structure is by the second reinforcing bar (2), the 3rd reinforcing bar (3) groupThe upper and lower two-layer steel bar layer becoming, all layouts radially, enclose cover globality for strengthening, and the 3rd reinforcing bar of lower floor also plays simultaneouslyUnbending;
Two, interval punching successively on original base surrounding exterior angle;
Three, in hole, insert the 6th reinforcing bar (6), and add anchor adhesive the implantation end of the 6th reinforcing bar (6) is fixed in basic exterior angle;
Four, pour into concrete by pouring type, the 3rd reinforcing bar (3) and the second reinforcing bar (2) formed to coagulation fortifield village cover in the lump,The other end of described the 6th reinforcing bar is implanted in coagulation fortifield village cover simultaneously.
2. strengthening of foundation method as claimed in claim 1, is characterized in that, before cover is enclosed in cast, is spoke at original basePenetrate shape and lay the arrangement of reinforcement of the 3rd reinforcing bar (3) as bending resistance component, described the 6th reinforcing bar (6) is for enclosing the 3rd reinforcing bar formation in coverNode, as the newly-increased fulcrum of the 3rd reinforcing bar.
3. the foundation reinforcement structure forming based on claim 1 method, comprises original base and encloses cover, its feature existsIn, at described basic exterior angle place and enclose contact position between cover and distribute and lay some the 6th reinforcing bars (6) as basis and enclose coverBetween connector;
Described enclose to be enclosed within build the 3rd reinforcing bar (3) that front laying is arranged radially, enclose cover and build the 3rd reinforcing bar (3) after mouldingAs a part of enclosing cover, both are combined as a whole, and wherein the 3rd reinforcing bar (3) is as bending resistance component, described the 6th reinforcing bar (6)Be positioned at the zone line of the 3rd reinforcing bar (3), the 3rd reinforcing bar (3) bending resistance component that exists for of the 6th reinforcing bar (6) providesPoint, has strengthened the bending resistance that entirety is enclosed cover.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410209494.4A CN104005433B (en) | 2014-05-16 | 2014-05-16 | Strengthening of foundation method and structure thereof |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410209494.4A CN104005433B (en) | 2014-05-16 | 2014-05-16 | Strengthening of foundation method and structure thereof |
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| Publication Number | Publication Date |
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| CN104005433A CN104005433A (en) | 2014-08-27 |
| CN104005433B true CN104005433B (en) | 2016-05-11 |
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| CN201410209494.4A Expired - Fee Related CN104005433B (en) | 2014-05-16 | 2014-05-16 | Strengthening of foundation method and structure thereof |
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Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN109024721B (en) * | 2018-07-21 | 2020-08-14 | 四川启创建设工程有限公司 | Reinforced foundation and method for improving bending and shearing resistance of existing building rigid foundation |
Citations (4)
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|---|---|---|---|---|
| CN101994325A (en) * | 2010-12-22 | 2011-03-30 | 建研地基基础工程有限责任公司 | Reinforced foundation and method for improving bending and shearing resistance of existing building rigid foundation |
| CN102535536A (en) * | 2012-03-21 | 2012-07-04 | 郭猛 | Reinforcing method for improving bend and shear bearing capacity of independent foundation |
| CN103061365A (en) * | 2013-01-31 | 2013-04-24 | 新兴能源装备股份有限公司 | Expanding method of concrete foundation |
| CN203855992U (en) * | 2014-05-16 | 2014-10-01 | 上海纺织建筑设计研究院 | Novel foundation strengthening structure |
Family Cites Families (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP5403254B2 (en) * | 2009-11-17 | 2014-01-29 | 東京電力株式会社 | Steel tower foundation reinforcement structure and method |
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Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101994325A (en) * | 2010-12-22 | 2011-03-30 | 建研地基基础工程有限责任公司 | Reinforced foundation and method for improving bending and shearing resistance of existing building rigid foundation |
| CN102535536A (en) * | 2012-03-21 | 2012-07-04 | 郭猛 | Reinforcing method for improving bend and shear bearing capacity of independent foundation |
| CN103061365A (en) * | 2013-01-31 | 2013-04-24 | 新兴能源装备股份有限公司 | Expanding method of concrete foundation |
| CN203855992U (en) * | 2014-05-16 | 2014-10-01 | 上海纺织建筑设计研究院 | Novel foundation strengthening structure |
Non-Patent Citations (1)
| Title |
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| 国家广电总局节目制作中心改造工程加固设计;王平军等;《内蒙古科技与经济》;20070630(第12期);第87-90页，第93页 * |
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