CN105401576A - Method for repairing pile foundation of bridge filling pile - Google Patents
Method for repairing pile foundation of bridge filling pile Download PDFInfo
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- CN105401576A CN105401576A CN201510944663.3A CN201510944663A CN105401576A CN 105401576 A CN105401576 A CN 105401576A CN 201510944663 A CN201510944663 A CN 201510944663A CN 105401576 A CN105401576 A CN 105401576A
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- pile foundation
- side well
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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
- C04—CEMENTS; CONCRETE; ARTIFICIAL STONE; CERAMICS; REFRACTORIES
- C04B—LIME, MAGNESIA; SLAG; CEMENTS; COMPOSITIONS THEREOF, e.g. MORTARS, CONCRETE OR LIKE BUILDING MATERIALS; ARTIFICIAL STONE; CERAMICS; REFRACTORIES; TREATMENT OF NATURAL STONE
- C04B26/00—Compositions of mortars, concrete or artificial stone, containing only organic binders, e.g. polymer or resin concrete
- C04B26/30—Compounds having one or more carbon-to-metal or carbon-to-silicon linkages ; Other silicon-containing organic compounds; Boron-organic compounds
- C04B26/32—Compounds having one or more carbon-to-metal or carbon-to-silicon linkages ; Other silicon-containing organic compounds; Boron-organic compounds containing silicon
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- E—FIXED CONSTRUCTIONS
- E02—HYDRAULIC ENGINEERING; FOUNDATIONS; SOIL SHIFTING
- E02D—FOUNDATIONS; EXCAVATIONS; EMBANKMENTS; UNDERGROUND OR UNDERWATER STRUCTURES
- E02D2250/00—Production methods
- E02D2250/0023—Cast, i.e. in situ or in a mold or other formwork
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- E—FIXED CONSTRUCTIONS
- E02—HYDRAULIC ENGINEERING; FOUNDATIONS; SOIL SHIFTING
- E02D—FOUNDATIONS; EXCAVATIONS; EMBANKMENTS; UNDERGROUND OR UNDERWATER STRUCTURES
- E02D2300/00—Materials
- E02D2300/0045—Composites
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Abstract
The invention provides a method for repairing a pile foundation of a bridge filling pile. The method includes the steps that a side well is dug in the approximate position of a below-standard part on one side of the pile foundation, the side well is at least 50 cm deeper than the lowest end of the below-standard position, and it is guaranteed that the whole below-standard part is exposed; the below-standard part is chiseled away; after chiseled sand is completely cleaned away, repair concrete is used for being poured to the side well, and the chiseled space and part of the side well connected with the chiseled space are completely filled with the repair concrete; and after the repair concrete is maintained completely, the side well is filled with soil and compacted. By the adoption of the method for repairing the pile foundation, the chiseled space can be well filled with the repair concrete to make contact with the inner wall of the chiseled space in an attached manner, the repair concrete can be well combined with the original pile foundation after being maintained, and compared with the prior art, cost can be saved, and the construction period can be shortened.
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. near excavation side, the bridge struction pile pile foundation side well of part not up to standard, the outer wall of described bridge struction pile pile foundation is exposed in the well of described side, 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;
S2. described part not up to standard cut from the well of described side, what formation was communicated with described side well cuts space, and is cleaned out by the silt particle chiseled out;
S3. adopt protecting tube to the side away from described bridge struction pile pile foundation of described side well and described in cut space periphery protect, to strengthen the bulk strength of described side well, the intensity of described protecting tube is greater than 20kg/mm
2;
S4. coated with adhesive on described protecting tube, described cementing agent is for protecting tube and the rehabilitating concrete of boning, and the thickness of described cementing agent is not more than 30mm;
S5. mending concrete is used to build described side well, space and described side well is cut described in filling, and cover whole protecting tube, 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 S3 step, adopt protecting tube to the side away from described bridge struction pile pile foundation of described side well and described in cut space periphery protect before, adopt the inwall of flexible protective film offside well to protect, the thickness of described flexible protective film is not more than 3mm.
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, the composition of the described protecting tube adopted is: the grains of sand that the glass fiber that particle diameter is 0.5mm-1mm, particle diameter are 0.2mm-0.1mm, particle diameter are the bentonite clay particle of 0.3mm-0.4mm, the aliphatic polyamine as curing compound, and phenolic resin film.
In described step S5, 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 S5, the concrete number of bridge struction pile pile foundation described in the concrete > of described mending concrete.
In described S4 step, 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.
In described S4 step, 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, at excavation side, the pile foundation side well of part not up to standard, side well depth is made to be deeper than the least significant end at least 50cm of position not up to standard, guarantee all parts not up to standard are exposed, then part not up to standard (being generally the concrete being mixed with silt) is cut, after the silt chiseled out is cleaned out, adopt protecting tube to the side away from described bridge struction pile pile foundation of described side well and described in cut space periphery protect, to strengthen the bulk strength of described side well, the intensity of described protecting tube is greater than 20kg/mm
2; Coated with adhesive on described protecting tube, described cementing agent is for protecting tube and the rehabilitating concrete of boning, and the thickness of described cementing agent is not more than 30mm; Finally use mending concrete offside well to build, mending concrete is filled completely enter into cut space and coupled part side well is inner, after mending concrete health completely, then offside well carries out fill compaction.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, fit with the inwall cutting space and contact, and can combine with original pile foundation preferably after health, and, protect owing to adopting protecting tube offside well before casting and cutting space, strengthen the intensity of whole side well, cementing agent is adopted then to be convenient to the connective stability adding reinforced concrete and side well and pile foundation periphery.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.
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, 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 excavation side, the described bridge struction pile pile foundation side well near described part not up to standard, side well large diameter is the smaller the better, in the present embodiment, diameter is 80cm, the outer wall of described bridge struction pile pile foundation side is exposed in the well of described side, 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; 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. adopt protecting tube to the side away from described bridge struction pile pile foundation of described side well and described in cut space periphery protect, to strengthen the bulk strength of described side well, the intensity of described protecting tube is greater than 20kg/mm
2;
S4. coated with adhesive on described protecting tube, described cementing agent is for protecting tube and the rehabilitating concrete of boning, and the thickness of described cementing agent is not more than 30mm;
S5. mending concrete is used to build described side well, space and described side well is cut described in filling, and cover whole protecting tube, 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.
The pile foundation method for repairing and mending of the present embodiment, at excavation side, the pile foundation side well of part not up to standard, side well depth is made to be deeper than the least significant end at least 50cm of position not up to standard, guarantee all parts not up to standard are exposed, then part not up to standard (being generally the concrete being mixed with silt) is cut, after the silt chiseled out is cleaned out, adopt protecting tube to the side away from described bridge struction pile pile foundation of described side well and described in cut space periphery protect, to strengthen the bulk strength of described side well, the intensity of described protecting tube is greater than 20kg/mm
2; Coated with adhesive on described protecting tube, described cementing agent is for protecting tube and the rehabilitating concrete of boning, and the thickness of described cementing agent is not more than 30mm; Finally use mending concrete offside well to build, mending concrete is filled completely enter into cut space and coupled part side well is inner, after mending concrete health completely, then offside well carries out fill compaction.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, fit with the inwall cutting space and contact, and can combine with original pile foundation preferably after health, and, protect owing to adopting protecting tube offside well before casting and cutting space, strengthen the intensity of whole side well, cementing agent is adopted then to be convenient to the connective stability adding reinforced concrete and side well and pile foundation periphery.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 method of one, in described step S3, the composition of the described protecting tube adopted is: the grains of sand that the glass fiber that particle diameter is 0.5mm-1mm, particle diameter are 0.2mm-0.1mm, particle diameter are the bentonite clay particle of 0.3mm-0.4mm, the aliphatic polyamine as curing compound, and phenolic resin film.Phenolic resin film is a kind of hydrophobic resin film, an antiseepage interface is formed between described expansive soil and described hydrophobic resin film, in use, the problem that the side well that protecting tube can prevent side well periphery from causing due to infiltration caves in, and, the particle diameter such as glass fiber, the grains of sand is different, mutually mixes, strengthens the hardening strength of protecting tube.
As the preferred scheme of one, in step s3, adopt protecting tube to the side away from described bridge struction pile pile foundation of described side well and described in cut space periphery protect before, the inwall of plastic foil offside well is adopted to protect, the thickness of described plastic foil is not more than 3mm, 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.The thickness of described flexible protective film is not more than 3mm.
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.Also, namely, when getting out a part of side well, namely adopt the inwall of husky film to this part side well to protect, can prevent side well inwall from caving in, also can ensure can strong bonded between side borehole axis adjacent inner wall upwards.
As preferred embodiment, 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 S5, 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 S5, 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.
As preferably, in step S3, described mending concrete is used to cut space and described side well is built completely to described.Its benefit 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.
As preferred embodiment, in S4 step, 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.Curing compound is aliphatic polyamine.
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.
As deformable embodiment, in S1 step, 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 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.
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, is characterized in that: comprise the steps
S1. near excavation side, the bridge struction pile pile foundation side well of part not up to standard, the outer wall of described bridge struction pile pile foundation is exposed in the well of described side, 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;
S2. described part not up to standard cut from the well of described side, what formation was communicated with described side well cuts space, and is cleaned out by the silt particle chiseled out;
S3. adopt protecting tube to the side away from described bridge struction pile pile foundation of described side well and described in cut space periphery protect, to strengthen the bulk strength of described side well, the intensity of described protecting tube is greater than 20kg/mm
2;
S4. coated with adhesive on described protecting tube, described cementing agent is for protecting tube and the rehabilitating concrete of boning, and the thickness of described cementing agent is not more than 30mm;
S5. mending concrete is used to build described side well, space and described side well is cut described in filling, and cover whole protecting tube, 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. bridge struction pile pile foundation method for repairing and mending according to claim 1, it is characterized in that: in S3 step, adopt protecting tube to the side away from described bridge struction pile pile foundation of described side well and described in cut space periphery protect before, adopt the inwall of flexible protective film offside well to protect, the thickness of described flexible protective film is not more than 3mm.
3. bridge struction pile pile foundation 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.
4. bridge struction pile pile foundation method for repairing and mending according to claim 1, it is characterized in that: in described step S3, the composition of the described protecting tube adopted is: the grains of sand that the glass fiber that particle diameter is 0.5mm-1mm, particle diameter are 0.2mm-0.1mm, particle diameter are the bentonite clay particle of 0.3mm-0.4mm, the aliphatic polyamine as curing compound, and phenolic resin film.
5. the bridge struction pile pile foundation method for repairing and mending according to any one of claim 1-4, it is characterized in that: in described step S5, 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. bridge struction pile pile foundation method for repairing and mending according to claim 1, is characterized in that: in described step S5, the concrete number of bridge struction pile pile foundation described in the concrete > of described mending concrete.
7. the bridge struction pile pile foundation method for repairing and mending according to any one of claim 1-6, it is characterized in that: in described S4 step, 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. bridge struction pile pile foundation method for repairing and mending according to claim 6, it is characterized in that: in described S4 step, 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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