CN105507316A - Convenient repair method for pile foundation of bridge bored pile - Google Patents
Convenient repair method for pile foundation of bridge bored pile Download PDFInfo
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- CN105507316A CN105507316A CN201510945119.0A CN201510945119A CN105507316A CN 105507316 A CN105507316 A CN 105507316A CN 201510945119 A CN201510945119 A CN 201510945119A CN 105507316 A CN105507316 A CN 105507316A
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- E—FIXED CONSTRUCTIONS
- E02—HYDRAULIC ENGINEERING; FOUNDATIONS; SOIL SHIFTING
- E02D—FOUNDATIONS; EXCAVATIONS; EMBANKMENTS; UNDERGROUND OR UNDERWATER STRUCTURES
- E02D5/00—Bulkheads, piles, or other structural elements specially adapted to foundation engineering
- E02D5/22—Piles
- E02D5/64—Repairing piles
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- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08J—WORKING-UP; GENERAL PROCESSES OF COMPOUNDING; AFTER-TREATMENT NOT COVERED BY SUBCLASSES C08B, C08C, C08F, C08G or C08H
- C08J5/00—Manufacture of articles or shaped materials containing macromolecular substances
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- C08L—COMPOSITIONS OF MACROMOLECULAR COMPOUNDS
- C08L83/00—Compositions of macromolecular compounds obtained by reactions forming in the main chain of the macromolecule a linkage containing silicon with or without sulfur, nitrogen, oxygen or carbon only; Compositions of derivatives of such polymers
- C08L83/04—Polysiloxanes
- C08L83/06—Polysiloxanes containing silicon bound to oxygen-containing groups
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- C09—DYES; PAINTS; POLISHES; NATURAL RESINS; ADHESIVES; COMPOSITIONS NOT OTHERWISE PROVIDED FOR; APPLICATIONS OF MATERIALS NOT OTHERWISE PROVIDED FOR
- C09J—ADHESIVES; NON-MECHANICAL ASPECTS OF ADHESIVE PROCESSES IN GENERAL; ADHESIVE PROCESSES NOT PROVIDED FOR ELSEWHERE; USE OF MATERIALS AS ADHESIVES
- C09J11/00—Features of adhesives not provided for in group C09J9/00, e.g. additives
- C09J11/02—Non-macromolecular additives
- C09J11/04—Non-macromolecular additives inorganic
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- C09—DYES; PAINTS; POLISHES; NATURAL RESINS; ADHESIVES; COMPOSITIONS NOT OTHERWISE PROVIDED FOR; APPLICATIONS OF MATERIALS NOT OTHERWISE PROVIDED FOR
- C09J—ADHESIVES; NON-MECHANICAL ASPECTS OF ADHESIVE PROCESSES IN GENERAL; ADHESIVE PROCESSES NOT PROVIDED FOR ELSEWHERE; USE OF MATERIALS AS ADHESIVES
- C09J11/00—Features of adhesives not provided for in group C09J9/00, e.g. additives
- C09J11/02—Non-macromolecular additives
- C09J11/06—Non-macromolecular additives organic
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- C—CHEMISTRY; METALLURGY
- C09—DYES; PAINTS; POLISHES; NATURAL RESINS; ADHESIVES; COMPOSITIONS NOT OTHERWISE PROVIDED FOR; APPLICATIONS OF MATERIALS NOT OTHERWISE PROVIDED FOR
- C09J—ADHESIVES; NON-MECHANICAL ASPECTS OF ADHESIVE PROCESSES IN GENERAL; ADHESIVE PROCESSES NOT PROVIDED FOR ELSEWHERE; USE OF MATERIALS AS ADHESIVES
- C09J163/00—Adhesives based on epoxy resins; Adhesives based on derivatives of epoxy resins
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- E—FIXED CONSTRUCTIONS
- E02—HYDRAULIC ENGINEERING; FOUNDATIONS; SOIL SHIFTING
- E02D—FOUNDATIONS; EXCAVATIONS; EMBANKMENTS; UNDERGROUND OR UNDERWATER STRUCTURES
- E02D17/00—Excavations; Bordering of excavations; Making embankments
- E02D17/06—Foundation trenches ditches or narrow shafts
- E02D17/08—Bordering or stiffening the sides of ditches trenches or narrow shafts for foundations
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- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08J—WORKING-UP; GENERAL PROCESSES OF COMPOUNDING; AFTER-TREATMENT NOT COVERED BY SUBCLASSES C08B, C08C, C08F, C08G or C08H
- C08J2383/00—Characterised by the use of macromolecular compounds obtained by reactions forming in the main chain of the macromolecule a linkage containing silicon with or without sulfur, nitrogen, oxygen, or carbon only; Derivatives of such polymers
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- E02D2300/00—Materials
- E02D2300/0004—Synthetics
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- E—FIXED CONSTRUCTIONS
- E02—HYDRAULIC ENGINEERING; FOUNDATIONS; SOIL SHIFTING
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- E02D2300/00—Materials
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- E02D2300/0018—Cement used as binder
- E02D2300/002—Concrete
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- E02—HYDRAULIC ENGINEERING; FOUNDATIONS; SOIL SHIFTING
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Abstract
The invention provides a convenient repair method for a pile foundation of a bridge bored pile. The convenient repair method comprises the following steps: excavating a side well in one side of the pile foundation at an approximate position of a substandard part, so that the depth of the side well is greater than the lowest end of the substandard position by at least 50 cm; and ensuring all of the substandard part to expose; then, punching out the substandard part, and clearing punched-out silt; and finally, using repair concrete to carry out pouring on the side well, so that the repair concrete is completely filled into the punched-out space and into partial side well connected to the punched-out space; and carrying out filled-soil compaction on the side well after the repair concrete maintenance is complete. According to the repair method provided by the invention, the repair concrete can be filled into the punched-out space very well, is fitted to and is in contact with the inner wall of the punched-out space, and can be combined with the original pile foundation very well after being maintained, so that, in comparison with the prior art, the cost can be saved and the construction period can be shorted.
Description
Technical field
The present invention relates to bridge pile foundation repair maintenance technical field, be specifically related to a kind of bridge struction pile pile foundation method for repairing and mending.
Background technology
Pile foundation is base form common in bridge engineering, and top bridge load can import in Rock soil Foundation by it, for it provides stable support.Castinplace pile is as common Bored Pile of Bridge form, and it has friction when constructing, and without soil compaction, the advantage of the little grade of noise, is thus used widely in bridge construction field.
When making castinplace pile, first needing to use rotary drilling rig construction borehole, putting into reinforcing cage after borehole, last Reperfu-sion concrete.Because the borehole wall dug out through rotary drilling rig is soil property, to boring in concrete perfusion time, easily peel off after the softer wall portion of soil property is immersed in water, and the operation vibrating to make concrete uniform filling to concrete is had when concrete perfusion, action of vibrating can cause the vibration of water, soil property hole wall is made more easily to be subject to erosion, hole wall generating portion even can be caused time serious to cave in, after hole wall collapse, the soil property of a part just can be mixed into castinplace pile side, when filling pile construction completes, when using supersonic reflectoscope to detect, this section of pile foundation being mixed with soil property will be detected as defective, weight capacity is not up to standard.Because the borehole degree of depth of concrete perfusion is very dark, general at more than 20m, during generation hole wall collapse, people can not know in advance, and castinplace pile entirety will be caused not up to standard once there be hole wall that comparatively serious caving in occurs, in order to complete construction, workman can only pour into by borehole again again, and this causes cost increase, claim for eot.
Summary of the invention
Therefore, the technical problem to be solved in the present invention is to overcome prior art Bridge castinplace pile quality dissatisfaction when there is borehole hole wall collapse, in order to complete construction, workman have to again borehole perfusion, cause cost increase, the technological deficiency of claim for eot, thus a kind of bridge struction pile pile foundation method for repairing and mending is provided.
For this reason, the invention provides a kind of bridge struction pile pile foundation method for repairing and mending, comprise the steps:
S1. at bridge struction pile pile foundation side and the side excavation side well relative with this side of close described part not up to standard, the outer wall of bridge struction pile pile foundation is exposed in the described side well of the bridge struction pile pile foundation side near described part not up to standard, and the degree of depth controlling described side well be deeper than described in the least significant end at least 50cm of part not up to standard, the described side well spacing of opposite side is not more than 50cm from the distance of the bridge struction pile pile foundation of described part not up to standard;
S2. described part not up to standard cut, what form that the described side well nearest with this part not up to standard be communicated with cuts space, and is cleaned out by the silt particle chiseled out;
S3. use the described side well of mending concrete to both sides to build simultaneously, the described side well of space and both sides is cut described in filling, and control the height of the building most significant end at least 200cm higher than described part not up to standard, after treating described mending concrete health, fill compaction is carried out to described side well.
In described step S3, cut before space and described side well build at the described mending concrete of use to described, the sidewall of flexible protective film to described side well is used to protect, flexible protective film is made to cover the inwall of side well except the part cutting space, and the height making the height > of described flexible protective film use described mending concrete to build described side well, peel off to prevent soil property and cave in.
In described step S3, the composition of described flexible protective film comprises: resin, the curing compound be added in described resin, be easy to the inorganic filler and the silane coupler that are formed micro nano structure by described resin-coating, the epoxy modified silicone resin of described resin to be epoxide number be 0.01-0.03eq/100g, the percentage by weight of described curing compound and described resin is 15-20:100, and the percentage by weight of described inorganic filler and described resin is 1-50:100; The percentage by weight of described silane coupler and described resin is 0.2-2:100, and described curing compound is aliphatic polyamine.
In described step S1, when excavating described side well, use the sidewall of sand film to described side well to protect simultaneously, peel off to prevent soil property and cave in, the composition of described sand film is: the grains of sand of particle diameter within the scope of 0.5-0.1mm, be coated on the resin on described grains of sand surface, be added on the curing compound in described resin, be easy to the inorganic filler and the silane coupler that are formed micro nano structure by described resin-coating, the epoxy modified silicone resin of described resin to be epoxide number be 0.01-0.03eq/100g, the percentage by weight of described resin and the described grains of sand is 0.5-10:100, the percentage by weight of described curing compound and described resin is 15-20:100, the percentage by weight of described inorganic filler and described resin is 1-50:100, the percentage by weight of described silane coupler and described resin is 0.2-2:100.
In described step S3, use tumbling barrel to carry out placement layer by layer to described side well, every layer thickness is not more than 50cm, uses plug-in type vibrating rod in casting process, and controls 5-10cm in described vibrating head insertion lower-layer concrete when upper strata concrete vibrating.
In described step S3, the concrete number of bridge struction pile pile foundation described in the concrete > of described mending concrete.
In described step S3, before building described mending concrete, the inwall first cutting space described and the described bridge struction pile pile foundation outer wall being exposed in the well of described side smear a layer binder, and described cementing agent comprises by weight: cement: medium sand: Guamishi: E44 epoxy resin: face phthalic acid and butyl ester: KH-560 silane coupler: curing compound=410-450:650-700:900-1000:90-120:6-10:1.5-3:70-90.
Described cementing agent comprises by weight: cement: medium sand: Guamishi: E44 epoxy resin: face phthalic acid and butyl ester: KH-560 silane coupler: curing compound=440:660:967:119:7.4:2.2:89.
Bridge struction pile pile foundation method for repairing and mending provided by the invention, has the following advantages:
1. pile foundation method for repairing and mending of the present invention, near bridge struction pile pile foundation side and the side excavation side well relative with this side of described part not up to standard, the outer wall of bridge struction pile pile foundation is exposed in the described side well of the bridge struction pile pile foundation side near described part not up to standard, and the degree of depth controlling described side well be deeper than described in the least significant end at least 50cm of part not up to standard, the described side well spacing of opposite side is not more than 50cm from the distance of the bridge struction pile pile foundation of described part not up to standard; Described part not up to standard cut, what form that the described side well nearest with this part not up to standard be communicated with cuts space, and is cleaned out by the silt particle chiseled out; Use the described side well of mending concrete to both sides to build simultaneously, the described side well of space and both sides is cut described in filling, and the height controlling to build is higher than the most significant end at least 200cm of described part not up to standard, after treating described mending concrete health, carries out fill compaction to described side well.
Method for repairing and mending of the present invention, when using mending concrete to build casting space, simultaneously to cut the outer side well part that space is communicated with and build, and control the height of building at least 200cm higher than part most significant end not up to standard, such mending concrete under stress, can be filled into well and cut interior volume, fitting with the inwall cutting space contacts, and can combine with original pile foundation preferably after health; And, be that the relative side of the described side well that little Part is close also arranges side well, when pouring into a mould, the side well of both sides is poured into a mould simultaneously, there is the phenomenon of skew in the position of the pile foundation entirety that the active force pouring into a mould side when can avoid only pouring into a mould side, side not up to standard well causes comparatively greatly, after making cast, the position of pile foundation can not offset.Preferred version is, use mending concrete to cutting space and side well is built in the lump, such concreting can be filled to enter into and be cut interior volume under very large pressure, and with cut the inwall close contact in space; In addition, cut the benefit that space and side well build in the lump and be also, the soil that causes because of excavation side well can be prevented for the inequality of pile foundation support degree, and the support effect to existing pile foundation can be strengthened.Further, can find out that aforesaid way is very convenient from above-mentioned repairing method process, be easy to operation.
After tested, pile foundation method for repairing and mending of the present invention is used to have good repair efficiency to peeling off because of hole wall to mix silt and detect underproof pile foundation, after method for repairing and mending of the present invention is repaired, supersonic reflectoscope is used to detect pile foundation, before repairing, testing result is III class pile foundation, be detected as I class pile foundation after repairing, meet pile foundation quality regulation.
2. pile foundation method for repairing and mending of the present invention, when excavating side well, use the sidewall of sand film offside well to protect simultaneously, also be, when getting out a part of side well, then this part side well inwall is protected, and make this part side well inwall and axially adjacent another part inwall compact siro spinning technology, the composition of described sand film is: the grains of sand of particle diameter within the scope of 0.5-0.1mm, be coated on the resin on described grains of sand surface, be added on the curing compound in described resin, be easy to the inorganic filler and the silane coupler that are formed micro nano structure by described resin-coating, the epoxy modified silicone resin of described resin to be epoxide number be 0.01-0.03eq/100g, the percentage by weight of described resin and the described grains of sand is 0.5-10:100, the percentage by weight of described curing compound and described resin is 15-20:100, the percentage by weight of described inorganic filler and described resin is 1-50:100, the percentage by weight of described silane coupler and described resin is 0.2-2:100.Above-mentioned sand film has stronger surface corrosion resistance energy, its adhesiveness is stronger, easily the sidewall forming the side well just formed is adhered to each other, thus there is the higher effect preventing from soil property from peeling off caving in, the effect of protection side well sidewall can not only being played when building, side well can also being avoided to cause internal diameter excessive because caving in.
3. pile foundation method for repairing and mending of the present invention, when building mending concrete, tumbling barrel offside well is used to carry out placement layer by layer, the thickness controlling every layer is not more than 50cm, plug-in type vibrating rod is used when building, and insert 5-10cm in lower-layer concrete at upper strata concrete vibrating time control vibrating head, thus make to build evenly, completely.
4. pile foundation method for repairing and mending of the present invention, control the concrete number of the concrete > bridge struction pile pile foundation of mending concrete, make to be filled into the concrete strength cutting interior volume higher, and health is faster, be conducive to ensureing repair efficiency, make the bridge struction pile pile foundation after repairing have good support strength, and be conducive to the reduction of erection time.
5. pile foundation method for repairing and mending of the present invention, before building mending concrete, the inwall cutting now space and the pile foundation outer wall being exposed in the well of side smear a layer binder, this cementing agent can be good at the mending concrete connecting former pile foundation outer wall and newly build, thus strengthens the adhesion of mending concrete and former pile foundation.Under test conditions, the axial tensile strength at the old and new interface is at about 1.7Mpa, and split tensile strength is at about 1.14Mpa, and shear strength, at about 2.16Mpa, thus greatly can strengthen the adhesion of mending concrete and former pile foundation outer wall for above-mentioned cementing agent.
Detailed description of the invention
Be further described in detail bridge struction pile pile foundation method for repairing and mending provided by the invention below, obviously, following embodiment is not the whole embodiment of the present invention.Based on embodiment described in the invention, those of ordinary skill in the art, not making the every other embodiment obtained under other creative work prerequisites, belong to protection scope of the present invention.In addition, if below in the described different embodiment of the present invention involved technical characteristic do not form conflict each other and just can be combined with each other.
Embodiment 1
The present embodiment provides a kind of bridge struction pile pile foundation method for repairing and mending, comprises the steps:
S1. at bridge struction pile pile foundation side and the side excavation side well relative with this side of close described part not up to standard, the outer wall of bridge struction pile pile foundation is exposed in the described side well of the bridge struction pile pile foundation side near described part not up to standard, and the degree of depth controlling described side well be deeper than described in the least significant end at least 50cm of part not up to standard, the described side well spacing of opposite side is not more than 50cm from the distance of the bridge struction pile pile foundation of described part not up to standard; In the present embodiment, the altitude range due to position not up to standard is 5.8-6.1m, and therefore the degree of depth of side well is 6.15m;
S2. described part not up to standard cut, and check up and down, confirm the pile foundation part being mixed with silt to be cut completely, what formation was communicated with described side well cuts space, and is cleaned out by the silt particle chiseled out;
S3. mending concrete is used to build described side well, space and described side well is cut described in filling, and the height controlling to build is higher than the most significant end 200cm of described part not up to standard, after treating described mending concrete health, carries out fill compaction to described side well.
The pile foundation method for repairing and mending of the present embodiment, when using mending concrete to build casting space, simultaneously to cut the outer side well part that space is communicated with and build, and control the height of building at least 200cm higher than part most significant end not up to standard, such mending concrete under stress, can be filled into well and cut interior volume, fitting with the inwall cutting space contacts, and can combine with original pile foundation preferably after health; And, in the relative side of the described side well close with Part not up to standard, side well is also set, when pouring into a mould, the side well of both sides is poured into a mould simultaneously, there is the phenomenon of skew in the position of the pile foundation entirety that the active force pouring into a mould side when can avoid only pouring into a mould side, side not up to standard well causes comparatively greatly, after making cast, the position of pile foundation can not offset.Preferred version is, use mending concrete to cutting space and side well is built in the lump, such concreting can be filled to enter into and be cut interior volume under very large pressure, and with cut the inwall close contact in space; In addition, cut the benefit that space and side well build in the lump and be also, the soil that causes because of excavation side well can be prevented for the inequality of pile foundation support degree, and the support effect to existing pile foundation can be strengthened.
After tested, pile foundation method for repairing and mending of the present invention is used to have good repair efficiency to peeling off because of hole wall to mix silt and detect underproof pile foundation, after method for repairing and mending of the present invention is repaired, supersonic reflectoscope is used to detect pile foundation, before repairing, testing result is III class pile foundation, be detected as I class pile foundation after repairing, meet pile foundation quality regulation.
As the preferred scheme of one, in step s3, cut before space and described side well build at the described mending concrete of use to described, also comprise and the sidewall of described side well is protected, peel off the step of caving in prevent soil property.
Concrete, the sidewall of flexible protective film to described side well can be used to protect, flexible protective film is made to cover the inwall of side well except the part cutting space, and the height making the height > of described flexible protective film use described mending concrete to build described side well.The composition of flexible protective film is: resin, the curing compound be added in described resin, be easy to the inorganic filler and the silane coupler that are formed micro nano structure by described resin-coating, the epoxy modified silicone resin of described resin to be epoxide number be 0.01-0.03eq/100g, the percentage by weight of described curing compound and described resin is 15-20:100, and the percentage by weight of described inorganic filler and described resin is 1-50:100; The percentage by weight of described silane coupler and described resin is 0.2-2:100.Above-mentioned flexible protective film has stronger surface corrosion resistance energy, its adhesiveness is stronger, easily the sidewall forming the side well just formed is adhered to each other, thus there is the higher effect preventing from soil property from peeling off caving in, the effect of protection side well sidewall can not only being played when building, side well can also being avoided to cause internal diameter excessive because caving in.As distortion, above-mentioned flexible protective film can also be plastic foil.
Because hole wall collapse occurred stratum, position not up to standard, then when building mending concrete, the possibility of again caving in is larger, by protecting hole wall, prevent from soil property from peeling off to cave in, can pouring quality be ensured, prevent mixing new silt and cause intensity to reduce.
As a kind of deformation program, in described step S1, when excavating described side well, using the sidewall of sand film to described side well to protect simultaneously, peeling off to prevent soil property and cave in.This technical scheme, can not only playing the effect of protection side well sidewall, side well can also being avoided to cause internal diameter excessive because caving in when building.
The composition of described sand film is: the grains of sand of particle diameter within the scope of 0.5-0.1mm, be coated on the resin on described grains of sand surface, be added on the curing compound in described resin, be easy to the inorganic filler and the silane coupler that are formed micro nano structure by described resin-coating, the epoxy modified silicone resin of described resin to be epoxide number be 0.01-0.03eq/100g, the percentage by weight of described resin and the described grains of sand is arbitrary value (the such as 0.5:100 in 0.5-10:100, 8:100, 10:100 etc.), the percentage by weight of described curing compound and described resin is arbitrary value (the such as 15:100 in 15-20:100, 20:100, 18:100 etc.), the percentage by weight of described inorganic filler and described resin is arbitrary value (such as 1:100 of 1-50:100, 2:100, 50:100 etc.), the percentage by weight of described silane coupler and described resin is arbitrary value (the such as 0.2:2 in 0.2-2:100,0.2-50,0.2:100 etc.), described inorganic filler is silicon powder, the particle diameter of silicon powder is 10 μm-20 μm, the percentage by weight of described inorganic filler and described resin molding is the arbitrary value (such as 15:100,20:100,18:100 etc.) in 15-20:100, described curing compound is Polymercaptan curing agent, as improvement, high molecular surfactant and hydrophobic polymer is also added with in described resin, described high molecular surfactant is polymethyl hydrogen siloxane or polyethers dimethyl siloxane, and described hydrophobic polymer is polysiloxanes or polyorganosiloxane ramification.
As a kind of optimal technical scheme, in described step S3, tumbling barrel is used to carry out placement layer by layer to described side well, every layer thickness is not more than 50cm, plug-in type vibrating rod is used in casting process, and 5-10cm in described vibrating head insertion lower-layer concrete is controlled when upper strata concrete vibrating, can make to build evenly, completely.
In described step S3, use the concrete number of mending concrete for C30, larger than the concrete C25 of existing pile foundation, the benefit of the concrete of the concrete > bridge struction pile pile foundation of mending concrete number is, can make to be filled into the concrete strength cutting interior volume higher, and health is faster, is conducive to ensureing repair efficiency, make the bridge struction pile pile foundation after repairing have good support strength, and be conducive to the reduction of erection time.Those skilled in the art can select concrete other concrete number within the scope of C30-C50 as mending concrete, also can play good technique effect.
Embodiment 2
The present embodiment provides a kind of bridge struction pile pile foundation method for repairing and mending, and it is the improvement on embodiment 1 basis, and difference is: in step S3, uses described mending concrete to cut space and described side well is built completely to described.
The benefit of the present embodiment is: the mending concrete of building can be made to fill to enter under very large pressure and cut interior volume, and with cut the inwall close contact in space; In addition, the soil that causes because of excavation side well can be prevented for the inequality of pile foundation support degree, and the support effect to existing pile foundation can be strengthened.
Embodiment 3
The present embodiment provides a kind of bridge struction pile pile foundation method for repairing and mending, it is the improvement in embodiment 1 or embodiment 2 basis, difference is: in step S3, before building described mending concrete, the inwall first cutting space described and the described bridge struction pile pile foundation outer wall being exposed in the well of described side smear a layer binder, and described cementing agent comprises by weight: cement: medium sand: Guamishi: E44 epoxy resin: face phthalic acid and butyl ester: KH-560 silane coupler: curing compound=440:660:967:119:7.4:2.2:89.
Above-mentioned cementing agent can be good at the mending concrete connecting former pile foundation outer wall and newly build, thus strengthens the adhesion of mending concrete and former pile foundation.Under test conditions, the axial tensile strength at the old and new interface is at about 1.7Mpa, and split tensile strength is at about 1.14Mpa, and shear strength, at about 2.16Mpa, thus greatly can strengthen the adhesion of mending concrete and former pile foundation outer wall for above-mentioned cementing agent.
In fact, the composition comprised by weight when cementing agent is: cement: medium sand: Guamishi: E44 epoxy resin: face phthalic acid and butyl ester: KH-560 silane coupler: during curing compound=410-450:650-700:900-1000:90-120:6-10:1.5-3:70-90, also can reach close technique effect.
Obviously, above-described embodiment is only for clearly example being described, and the restriction not to embodiment.For those of ordinary skill in the field, can also make other changes in different forms on the basis of the above description.Here exhaustive without the need to also giving all embodiments.And thus the apparent change of extending out or variation be still among the protection domain of the invention.
Claims (8)
1. a bridge struction pile pile foundation method for repairing and mending easily, is characterized in that: comprise the steps
S1. at bridge struction pile pile foundation side and the side excavation side well relative with this side of close described part not up to standard, the outer wall of bridge struction pile pile foundation is exposed in the described side well of the bridge struction pile pile foundation side near described part not up to standard, and the degree of depth controlling described side well be deeper than described in the least significant end at least 50cm of part not up to standard, the described side well spacing of opposite side is not more than 50cm from the distance of the bridge struction pile pile foundation of described part not up to standard;
S2. described part not up to standard cut, what form that the described side well nearest with this part not up to standard be communicated with cuts space, and is cleaned out by the silt particle chiseled out;
S3. use the described side well of mending concrete to both sides to build simultaneously, the described side well of space and both sides is cut described in filling, and control the height of the building most significant end at least 200cm higher than described part not up to standard, after treating described mending concrete health, fill compaction is carried out to described side well.
2. the pile foundation of bridge struction pile easily method for repairing and mending according to claim 1, it is characterized in that: in described step S3, cut before space and described side well build at the described mending concrete of use to described, the sidewall of flexible protective film to described side well is used to protect, flexible protective film is made to cover the inwall of side well except the part cutting space, and the height making the height > of described flexible protective film use described mending concrete to build described side well, peel off to prevent soil property and cave in.
3. the pile foundation of bridge struction pile easily method for repairing and mending according to claim 1, it is characterized in that, the composition of described flexible protective film comprises: resin, the curing compound be added in described resin, be easy to the inorganic filler and the silane coupler that are formed micro nano structure by described resin-coating, the epoxy modified silicone resin of described resin to be epoxide number be 0.01-0.03eq/100g, the percentage by weight of described curing compound and described resin is 15-20:100, and the percentage by weight of described inorganic filler and described resin is 1-50:100; The percentage by weight of described silane coupler and described resin is 0.2-2:100, and described curing compound is aliphatic polyamine.
4. the pile foundation of bridge struction pile easily method for repairing and mending according to claim 1, it is characterized in that: in described step S1, when excavating described side well, use the sidewall of sand film to described side well to protect simultaneously, peel off to prevent soil property and cave in, the composition of described sand film is: the grains of sand of particle diameter within the scope of 0.5-0.1mm, be coated on the resin on described grains of sand surface, be added on the curing compound in described resin, be easy to the inorganic filler and the silane coupler that are formed micro nano structure by described resin-coating, the epoxy modified silicone resin of described resin to be epoxide number be 0.01-0.03eq/100g, the percentage by weight of described resin and the described grains of sand is 0.5-10:100, the percentage by weight of described curing compound and described resin is 15-20:100, the percentage by weight of described inorganic filler and described resin is 1-50:100, the percentage by weight of described silane coupler and described resin is 0.2-2:100.
5. the pile foundation of the bridge struction pile easily method for repairing and mending according to any one of claim 1-3, it is characterized in that: in described step S3, tumbling barrel is used to carry out placement layer by layer to described side well, every layer thickness is not more than 50cm, use plug-in type vibrating rod in casting process, and control 5-10cm in described vibrating head insertion lower-layer concrete when upper strata concrete vibrating.
6. the pile foundation of the bridge struction pile easily method for repairing and mending according to any one of claim 1-3, is characterized in that: in described step S3, the concrete number of bridge struction pile pile foundation described in the concrete > of described mending concrete.
7. the pile foundation of the bridge struction pile easily method for repairing and mending according to any one of claim 1-3, it is characterized in that: in described step S3, before building described mending concrete, the inwall first cutting space described and the described bridge struction pile pile foundation outer wall being exposed in the well of described side smear a layer binder, and described cementing agent comprises by weight: cement: medium sand: Guamishi: E44 epoxy resin: face phthalic acid and butyl ester: KH-560 silane coupler: curing compound=410-450:650-700:900-1000:90-120:6-10:1.5-3:70-90.
8. the pile foundation of bridge struction pile easily method for repairing and mending according to claim 7, is characterized in that: described cementing agent comprises by weight: cement: medium sand: Guamishi: E44 epoxy resin: face phthalic acid and butyl ester: KH-560 silane coupler: curing compound=440:660:967:119:7.4:2.2:89.
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| CN201510945119.0A CN105507316A (en) | 2015-12-16 | 2015-12-16 | Convenient repair method for pile foundation of bridge bored pile |
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| CN201510945119.0A CN105507316A (en) | 2015-12-16 | 2015-12-16 | Convenient repair method for pile foundation of bridge bored pile |
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Application publication date: 20160420 |