CN102002945B - Capsule type anti-corrosion device with pile shoe and anti-corrosion pile using same and construction method - Google Patents
Capsule type anti-corrosion device with pile shoe and anti-corrosion pile using same and construction method Download PDFInfo
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- CN102002945B CN102002945B CN 201010133593 CN201010133593A CN102002945B CN 102002945 B CN102002945 B CN 102002945B CN 201010133593 CN201010133593 CN 201010133593 CN 201010133593 A CN201010133593 A CN 201010133593A CN 102002945 B CN102002945 B CN 102002945B
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Abstract
The invention relates to a capsule type anti-corrosion device with a pile shoe and an anti-corrosion and construction method using the device, the capsule type anti-corrosion device comprises a cylindrical coating capsule body made of anti-corrosion material, the inner surface and the outer surface of the coating capsule body are uneven surfaces, a supporting bottom is arranged at the lower part in the coating capsule body, the periphery of the supporting bottom is connected with the side wall of the coating capsule body, the hard anti-corrosion pile shoe is arranged in the coating capsule body, which is positioned at the lower end of the supporting bottom, at least one grouting pipe is arranged near to the outer side of the coating capsule body along the axial line direction the coating capsule body, the bottom end of each grouting pipe extends to the place which is near to the bottom end of the coating capsule body, and a low-pressure grouting hole and a plurality of high-pressure grouting holes are respectively arranged at the lower part of each grouting pipe, which is near to the supporting bottom. The invention aims at providing the capsule type anti-corrosion device with the pile shoe, which has reliable long-term anti-corrosion performance in a pile foundation and a composite foundation in a highly corrosive brine formation, and can reduce the expensive maintenance cost of the foundations of buildings and structures in the corrosive formation, and the anti-corrosion and construction method using the device.
Description
Technical field
The present invention relates to anticorrosive, the utricule of the coating with the shoe anti-corrosive apparatus corroded in a kind of pile foundation that is applied to all kinds of traffic engineering, Industrial and Civil Engineering and composite foundation and anticorrosion and corresponding job practices using this device to make.
Background technology
At present, there is with seawater the offshore engineering construction of carrying out in the place that water conservancy contacts no matter be, or the large-scale construction project of carrying out in the inland brine lake area, all face the bittern stratum to the burn into erosion of common buildings material and degrade problem, so that be forced to reduce the design service life of building, and cause the project later maintenance costly.Some investigation and correlation tests for building in the corrosivity place, structure show: bittern or Salt Lake Environments, and the salinized soil stratum around salt lake has serious long-term corrosion and corrosion function to steel, concrete and loam brick.Under the salinized soil condition, ordinary concrete just starts efflorescence about 3 years, even if adopt the safeguard measures such as epoxy coating or fiber glass epoxy, and due to weather and environmental factor, the organic protection layer accelerated ageing, serious corrosion can occur in inner concrete.At present, not only cost is high in the passive protection that the measures such as the malthoid isolation adopted in some electric power of saline soil area and construction of tunnel project, glass fiber reinforced plastic protection and granite basis are carried out, and corrosion protection result is also also not obvious, the common less than of normal service life 20 years.
For the pile foundation in highly corrosive bittern stratum, some traditional treatment method and the measure of existing improvement aseptic technic in the composite foundation engineering, mainly contain following some deficiency:
Common steel bar concrete pile form be subject to the bittern stratum chemical attack and physical erosion, degrade seriously, although bearing capacity is relatively high, normal service life is very short, within general about 10 years, just need to underpin overhaul once, maintenance cost is very high;
2. the vertical foundation pile form that treatment process of composite foundation adopts is generally broken stone pile, undesirable to the enhancing effect of all salt marsh soil bodys of stake in its work progress, and be subject to the restriction of the replacement stone pile composite foundation globality in the salinized soil place, load the groundwork TERM DEFORMATION very large and difficult stable, the foundation pile pile body easily produces bulging and destroys, and its bearing capacity and deformation behaviour is difficult to meet the demands;
3. the fiber-reinforced composite clad aseptic technic of applying in bridge or port works has project durability preferably, but it mainly is applicable to the preformed pile type, and cost is higher, for the general industry in the corrosivity place and civilian construction pile foundation, and inapplicable.
4. although adopt the mode of improving pile concrete and principal rod material behavior can meet the requirement of pile foundation corrosion-resistant, but the fabrication and installation complex process of pile body, and the expense of corresponding novel anticorrosion material is much higher than conventional concrete, therefore this method can't be complementary with existing pile foundation construction ability and budget, ripe engineering method remains further to be developed.
At present, for such as under the highly corrosive site conditions such as bittern stratum, having comparatively foundation pile guard technology and the matching operation engineering method of general applicability in ground and Foundation Design field, is to be badly in need of the engineering roadblock solved.
Summary of the invention
The object of the present invention is to provide and a kind ofly can resist the chemical attack of bittern in stratum and the physical crystal erosion effect of villaumite, effectively that the bittern environment in stratum and piling is isolated, there is reliable long-term antiseptic property in pile foundation in highly corrosive bittern stratum and composite foundation, when guaranteeing Basic bearing ability, significantly improve the service life of pile body, the pile foundation length of service was adapted with the Building Design life-span, reduce the corrosivity stratum built-in, the maintenance cost that structure base is high, reduce pouring material consumption and engineering time, reduce common buildings basis corrosion-resistant construction cost in the corrosivity stratum, making and manufacture are flexible, can adapt to easily the requirement of multiple pile foundation and Foundation Treatment, capsule with shoe formula anti-corrosive apparatus easy to utilize and use anticorrosion stake and the job practices of this device.
Capsule formula anti-corrosive apparatus with shoe, the coating utricule that comprises the tubular that anticorrosive is made, in the coating utricule, external surface is respectively rough surface, the bottom coated in utricule is provided with backing, the periphery of backing is connected with the sidewall that coats utricule, coat the lower end that is positioned at backing in utricule and be provided with an anticorrosion shoe of hard, be provided with at least one Grouting Pipe along the axis direction that coats utricule near the coating utricule outside, the bottom of every Grouting Pipe extends to the bottom end vicinity that coats utricule, bottom every Grouting Pipe is provided with respectively a low-pressure grouting hole and a plurality of high-pressure slip-castings hole near described backing place, described Grouting Pipe is injected the anticorrosion slurries for the periphery to coating the utricule sidewall, described backing comprises the sidewall of tubular, the height of cylindrical sidewall is 50-500mm, between the sidewall of the cylindrical sidewall of backing and described coating utricule, adopt stacked overlap joint hot extrusion to be weldingly connected, the top of the cylindrical sidewall of backing has the annular edge of a wing, the upper end on the annular edge of a wing is equipped with steel deck-plate, be provided with sealing joint strip or asbestos cord wire rod or the rubber gasket of water-swellable between the annular edge of a wing of the bottom surface of steel deck-plate and described backing, described anticorrosion shoe is the cylindricality identical with the cross section of described coating utricule, the middle part of anticorrosion shoe is provided with cavity, the lateral wall of anticorrosion shoe is provided with the groove that multiple tracks 10-30mm is dark, anticorrosion shoe is connected with the colligation of described coating utricule by the multiple tracks clip that is positioned at groove, the middle part of steel deck-plate has through hole, the periphery of steel deck-plate middle through-hole has the sleeve to downward-extension, sleeve stretches into downwards in described cavity.
The capsule formula anti-corrosive apparatus of band shoe of the present invention, wherein, the inside and outside surface of described coating utricule is respectively the latticed or cellular fin or corrugated of fish scale-shaped, coat utricule cross section be shaped as circle or regular polygon or " work " font or " T " font or " recessed " font.
The capsule formula anti-corrosive apparatus of band shoe of the present invention, wherein, the aperture in described low-pressure grouting hole is 10-50mm, the appearance in low-pressure grouting hole is enclosed with filter screen, the aperture in described high-pressure slip-casting hole is 5-36mm, the surface in high-pressure slip-casting hole is by the rubber sleeve hard-pressed bale, and geotextiles or polyester plastic material that described coating utricule and described backing adopt polyethylene or polyvinyl chloride or surface to be coated with corrosion-inhibiting coating are made, and coating utricule and backing thickness is 0.5-10mm.
The capsule formula anti-corrosive apparatus of band shoe of the present invention, wherein, described coating utricule adopts high density polyethylene (HDPE) (HDPE) material to make, and the thickness of described steel deck-plate is 5-30mm.
Use the anticorrosion stake of the capsule formula anti-corrosive apparatus of band shoe of the present invention, comprise the described formula of the capsule with shoe anti-corrosive apparatus, the top that is positioned at described backing in described coating utricule with the capsule formula anti-corrosive apparatus of shoe is filled with expansive concrete, in expansive concrete along coating being axially arranged with at least one and adding rib component of utricule, the outside that coats utricule is enclosed with the fixed thin layer of expansive cement mortar, at top pouring alkali-excited cement slurries or polymer cement mortar or the geopolymer slurries of expansive concrete, the anticorrosion pile cover of rear formation sealing condenses.
Anticorrosion stake of the present invention, wherein, the end that the fixed thin layer of described expansive cement mortar adopts the anticorrosion slurries that are mixed with 6%-12% expansion agent to pass through Grouting Pipe injects fixed formation behind the stake hole, and in each described upper, middle and lower section that adds rib component, being set with respectively a plurality ofly to medium-height trestle, each adds on rib component bottom end head and is respectively installed with an anti-guard housing.
The job practices of the anticorrosion stake of the present invention, comprise the steps:
A, in the stake hole of stake position place injection projected depth;
B, related tool is proposed to a stake hole;
C, will insert in the stake hole with the capsule formula anti-corrosive apparatus of shoe, and will described anticorrosion shoe be placed to the predetermined position bottom a hole;
D, in the coating utricule of the formula of the capsule with the shoe anti-corrosive apparatus in the stake hole, insert tremie, and by tremie to coating continuous placing expansive concrete in utricule, until in the coating utricule, expansive concrete approach to coat top in utricule, then insert the reinforcement member at once in the expansive concrete in the clad type utricule;
E, utilization is with the Grouting Pipe of the capsule formula anti-corrosive apparatus of shoe, inject to the periphery of described coating utricule sidewall the anticorrosion slurries that are mixed with expansion agent with the grouting pressure that is less than 0.5MPa by the low-pressure grouting hole, until the anticorrosion slurries overflow ground, after standing a period of time, again each the high-pressure slip-casting hole by Grouting Pipe with the grouting pressure of 1-5MPa to injection anticorrosion slurries in the space between described coating utricule lateral wall and stake hole, form the fixed thin layer of expansive cement mortar that coats the utricule lateral wall after slurry consolidation, and final with a hole sidewall soil body adhesive solidification, be integrated,
F, to the pile body expansive concrete is fixed reach design strength and require after, by pile crown concrete dabbing, and build anticorrosive concrete to a little more than the design of pile top absolute altitude in the described coating utricule at pile crown position, form anticorrosion pile cover after the sclerosis levelling.
The anticorrosion pile construction method of the present invention, wherein, if run in described step C in a hole, exist underground water to hinder the capsule formula anti-corrosive apparatus with shoe to insert the stake hole, by described anticorrosion shoe sinking to after in underground water, utilize drainage pump to extract the underground water in the stake hole out by the low-pressure grouting hole of described Grouting Pipe bottom, progressively anticorrosion shoe is inserted into to predetermined depth simultaneously.
The anticorrosion pile construction method of the present invention, wherein, if run in described step C in a hole, exist underground water to hinder the capsule formula anti-corrosive apparatus with shoe to insert the stake hole, tremie is inserted in described coating utricule in advance, and will coat utricule and the conduit colligation is fixed, utilize the deadweight of tremie to offset buoyancy force of underground water, thus will be with the capsule formula anti-corrosive apparatus sinking of shoe to predetermined depth.
The anticorrosion pile construction method of the present invention, wherein, also comprise and utilize all casing drill in described steps A, and by the drill bit casting drilling and forming hole in steel sleeve and steel sleeve, bore diameter is 600～1500mm; Utilizing the flow of tremie perfusion expansive concrete in described step D is 0.05～1.0m
3/ min, the described rib component that adds adopts the rear reinforcing cage technique of inserting of vibration in the pile body expansive concrete to insert; In described step e, also be included in before coating utricule side wall grouting, utilize all casing drill to extract section by section steel sleeve, meanwhile or afterwards implement a stake side grouting with plunger.
The anticorrosion pile construction method of the present invention, wherein, also comprise jumping chisel frame high pressure jet grouting rig in placely in described steps A, in the earth's surface casing at stake position place, adopt low-pressure fuel injection slurry coat method or cement paste or clear water drilling and forming hole to projected depth; Before also being included in described step B and carrying brill, start high-pressure hydraulic pump, pump pressure 20～40MPa and low-pressure grouting pump, pump pressure 2～8MPa, the speed with rotating speed: 8～25r/min, speed-raising: 8～25cm/min promotes drilling rod gradually to earth's surface simultaneously; Also comprise in described step C the capsule formula anti-corrosive apparatus with shoe and vibratory impulse hammer installation in position, and under the jerk effect of vibratory impulse hammer, will shake in the slurries of stake hole with the capsule formula anti-corrosive apparatus of shoe gradually and charge and attack into to desired depth; The flow of building expansive concrete in described step D in the coating utricule of the capsule formula anti-corrosive apparatus to shoe is 0.05～1.0m
3/ min, the described rib component that adds adopts the rear reinforcing cage technique of inserting of vibration to insert.
The anticorrosion pile construction method of the present invention, wherein, also comprise the preparation crane in described steps A, more piece steel sleeve and grab bucket, utilize grab bucket to dig out the soil body at place, stake position in head saves steel sleeve, discharge gradually along with the soil body in steel sleeve, steel sleeve slip casting sinks down into a little more than earth's surface and locates, then hang the second section steel sleeve, the bottom of second section steel sleeve is connected with first segment steel sleeve top, completing after connecting continues to utilize the grab bucket punching mode of grabbing to discharge a stake hole than the corrosivity soil body in the second section steel sleeve of depths, so circulation, until steel sleeve sinks to the designing pile length degree of depth, also comprise in described step B grab bucket is proposed to the stake hole, utilize in described step e with the Grouting Pipe of the capsule formula anti-corrosive apparatus of shoe and inject when being mixed with the anticorrosion slurries of expansion agent to the peripheral sidewall of described coating utricule with the grouting pressure that is less than 0.5MPa by the low-pressure grouting hole, utilizing high-frequency electric machines to drive the vibration dip pipe extractor extracts steel sleeve section by section, after utilizing the vibration dip pipe extractor that whole penstock vibrations are promoted out to a hole, continue slip casting until the anticorrosion slurries overflow a hole, described step F is replaced by following step, after adding rib component and being placed to position, after the initial set of pile body expansive concrete, by pile crown concrete dabbing, and in the described utricule at pile crown position the colligation distributing bar, build anticorrosive concrete.
With the pile foundation in existing salinized soil stratum, with foundation treatment technology, with anticorrosion process, compare, the present invention has the following advantages:
1, the formula of the capsule with shoe anti-corrosive apparatus of the present invention and use anticorrosion stake and the job practices of this device, can be by the complete sealed envelope of pile body supporting body in the clad type utricule of the physical crystal erosion effect of the chemical attack that can effectively resist bittern in stratum and villaumite, effectively that the bittern environment in stratum and piling is isolated, significantly improve the service life of the main bearing structure of pile body, reduced the maintenance cost that the corrosivity stratum is built-in, structure base is high.
2, the capsule formula anti-corrosive apparatus of band shoe of the present invention and use anticorrosion stake and the job practices of this device, material and aseptic technic ripe in existing building material and petrochemical industry have been improved, reduce pouring material consumption and engineering time, also can reduce common buildings basis corrosion-resistant construction cost in the corrosivity stratum simultaneously.
3, apply the formula of the capsule with shoe anti-corrosive apparatus of the present invention and use anticorrosion stake and the job practices of this device, the construction technology maturation of its primary structure and technique, making and manufacture are flexible, can adapt to easily the requirement of multiple pile foundation and Foundation Treatment, easy to utilize.
Below in conjunction with drawings and the specific embodiments in detail the present invention is described in detail.
The accompanying drawing explanation
Fig. 1 is the front view of the present invention with a kind of embodiment of the flexible bladder type anti-corrosive apparatus of shoe;
The partial enlarged drawing that Fig. 2 is Fig. 1;
The top view in the B that Fig. 3 is Fig. 1-B cross section;
Fig. 4 is the front view of the present invention with the another kind of embodiment of the flexible bladder type anti-corrosive apparatus of shoe;
Fig. 5 is the structural representation of the cross section of " T " font for coating utricule;
Fig. 6 is the structural representation of the cross section of " work " font for coating utricule;
Fig. 7 is the structural representation of the cross section of " recessed " font for coating utricule;
Fig. 8 is for being used the front view of anticorrosion of the anti-corrosive apparatus of the flexible bladder type with shoe shown in Fig. 1;
Fig. 9 is for being used the front view of anticorrosion of the anti-corrosive apparatus of the flexible bladder type with shoe shown in Fig. 4;
The technique process schematic diagram of a kind of job practices that Figure 10 a-10h is anticorrosion stake of the present invention;
The technique process schematic diagram of the another kind of job practices that Figure 11 a-11f is anticorrosion stake of the present invention;
The technique process schematic diagram of another job practices that Figure 12 a-12g is anticorrosion stake of the present invention.
The specific embodiment
As Fig. 1, shown in Fig. 2 and Fig. 3, capsule with shoe formula anti-corrosive apparatus of the present invention, the coating utricule 1 that comprises the tubular that anticorrosive is made, in coating utricule 1, external surface is respectively rough surface, be specifically as follows fish scale-shaped latticed or cellular fin or corrugated surface, the bottom coated in utricule 1 is provided with backing 2, backing 2 comprises the sidewall of tubular, the height of cylindrical sidewall is 50-500mm, between the sidewall of the cylindrical sidewall of backing 2 and coating utricule 1, adopt stacked overlap joint hot extrusion to be weldingly connected, the top of the cylindrical sidewall of backing 2 has the annular edge of a wing, the upper end on the annular edge of a wing is equipped with steel deck-plate 5, the thickness of steel deck-plate 5 is 5-30mm, be provided with sealing joint strip or asbestos cord wire rod or the rubber gasket of water-swellable between the annular edge of a wing of the bottom surface of steel deck-plate 5 and backing 2.
Coat the lower end that is positioned at backing 2 in utricule 1 and be provided with an anticorrosion shoe 3 of hard, be provided with five Grouting Pipe 4 along the axis direction that coats utricule 1 near coating utricule 1 outside, the bottom of every Grouting Pipe 4 extends to the bottom end vicinity that coats utricule 1, in the bottom of every Grouting Pipe 4, near backing 2 places, is provided with respectively a low-pressure grouting hole 6 and a plurality of high-pressure slip-castings hole 7.The aperture in low-pressure grouting hole 6 is 10-50mm, the appearance in low-pressure grouting hole 6 is enclosed with filter screen 8, the aperture in high-pressure slip-casting hole 7 is 5-36mm, the surface in high-pressure slip-casting hole 7 is by the rubber sleeve hard-pressed bale, coat utricule 1 and backing 2 and adopt polyethylene (PE) or polyvinyl chloride (PVC) or surperficial geotextiles or the polyester plastic material that is coated with corrosion-inhibiting coating to make, coating utricule 1 and backing 2 thickness is 0.5-10mm.
The cross sectional shape of above-mentioned coating utricule 1 can be arranged to circle or regular polygon according to the size and shape in aperture, stake hole, so that processing and fabricating, the diameter of its cross sectional shape or girth can adopt the diameter that is equal to or slightly less than a hole or the size of girth; While inserting some foundation piles in technique or basis as bending resistance, anti-floating or shear structure member after adopting the anticorrosion utricule of clad type, the cross sectional shape that also can will coat according to the different bearer properties of foundation pile utricule 1 is made into " work " font as shown in Figure 6, or T-shape as shown in Figure 5, or " recessed " type as shown in Figure 7, specifically can be long according to stake, the characteristics on load bearing requirements, form of reinforcement and corrosivity stratum comprehensively determine.Coating utricule 1 also can adopt high density polyethylene (HDPE) (HDPE) material to make.
As shown in Figure 4, anticorrosion shoe 3 can be also the cylindricality identical with the cross section that coats utricule 1, the middle part of anticorrosion shoe 3 is provided with cavity 11, the lateral wall of anticorrosion shoe 3 is provided with the groove 12 that multiple tracks 10-30mm is dark, anticorrosion shoe 3 is connected with 1 colligation of coating utricule by the multiple tracks clip 10 that is positioned at groove 12 places, the middle part of steel deck-plate 5 has through hole, and the periphery of steel deck-plate 5 middle through-holes has the sleeve to downward-extension, and sleeve stretches into downwards in cavity 11.
The sealing corrosion of the formula of the capsule with shoe anti-corrosive apparatus of the present invention design core is that the upper and lower termination of the anticorrosion utricule of clad type and upper top pressure closure structure and lower seal backing structure are realized being tightly connected fully, thus by pile shaft material and on every side the corrosivity stratum isolate fully.In use, to the coating utricule 1 in than in severe corrosive environment, being tightly connected of its lower end and anticorrosion shoe 3 can adopt outer embedded and two kinds of different modes of built-in type.While adopting outer embedded connection, the side of anticorrosion shoe 3 makes thick a plurality of grooves 12 with certain depth and curvature, and will coat the bending of utricule 1 appropriateness and be placed in groove, then at the interior injection binding material of groove 12, will coat utricule 1 and anticorrosion shoe 3 in predetermined position simultaneously and be fixed realization and be tightly connected; Also the lower end that coats utricule 1 directly can be implanted in mould in not solidified anti-corrosion concrete material, realize coating being tightly connected of utricule 1 and coating utricule 1 lower end wait to solidify after.When adopting built-in type to connect, all or part of coating utricule 1 lower end that is embedded in sealing of anticorrosion shoe 3 of moulding will be made, simultaneously for guaranteeing the intensity of built-in type connection, also can be lining into lute in or brush certain thickness cementitious materials in coating utricule 1 termination, lower end and 3 of anticorrosion shoes, the mode of recycling multiple tracks clip 10 lockings realizes connecting fastening.
Capsule with the shoe formula anti-corrosive apparatus specific embodiment of the present invention can be:
1, get long * wide: the inside and outside surface of the HDPE material of 15.65m * 1.3m, thick 1.2mm has one of the geo-membrane material of twill-like coarse grids, its minor face is prolonged to 10cm and 5cm inwardly turns down twice, and its minor face is utilized to Hot welding welding growth 15m, diameter 0.41m, the cylinder that upper end is uncovered, lower end is interior hollow toroid after by circumferential overlap joint 40mm; Cut out the same material envelop materials be complementary with cylindrical shell indent lower end size, after compacting, implement indent bending hot weld splicing, make the coating utricule 1 that upper end is uncovered, the lower end indent is sealed;
2, adopt alkali to excite concrete material to pour into a mould anticorrosion shoe 3 in the mould of making in advance, the alkali of cast excites in concrete and mixes certain short fiber, to improve concrete cracking resistance, when alkali excites concrete in the overlooking state of mould～hard plastic of stream, in the situation that the not demoulding, pluck out wide 1.4mm, the groove 12 of dark about 100mm, pour into the polyesters colloidal materials in groove 12, to coat utricule 1 lower end inner concave simultaneously and insert in cutting through the mud jacking pipeline connected, and complete coating utricule 1 lower end and be tightly connected.
As shown in Figure 8, use the anticorrosion stake of the formula of the capsule with shoe anti-corrosive apparatus of the present invention, comprise the formula of the capsule with shoe anti-corrosive apparatus as shown in Figure 1, the top that is positioned at backing 2 in the coating utricule 1 of this formula of capsule with shoe anti-corrosive apparatus is filled with expansive concrete 13, expansion agent in concrete adopts the UEA-H high performance expansion admixture, volume is 8.5%, in expansive concrete 13 along coating being axially arranged with 3-6 and adding rib component 14 of utricule 1, the outside that coats utricule 1 is enclosed with the fixed thin layer 16 of expansive cement mortar, when concrete expansion approaches stationary value by the time, cut unnecessary geomembrane, and the upper end that the mode that adopts indent hot weld splicing completes the clad type utricule is tightly connected, top pouring alkali-excited cement slurries or polymer cement mortar or geopolymer slurries at expansive concrete 13, the anticorrosion pile cover 18 of rear formation sealing condenses.The end that the fixed thin layer 16 of expansive cement mortar adopts the anticorrosion slurries 19 that are mixed with 6%-12% expansion agent to pass through Grouting Pipe 4 injects fixed formation behind the stake hole, and in the upper, middle and lower section that each adds rib component 14, being set with respectively a plurality ofly to medium-height trestle 15, each adds on rib component 14 terminations, bottom and is respectively installed with an anti-guard housing 17.
Anticorrosion stake shown in Fig. 9, employing be the formula of the capsule with the shoe anti-corrosive apparatus shown in Fig. 4, except anticorrosion shoe 3 parts wherein are different with the anticorrosion stake shown in Fig. 5, basic identical shown in the structure of other parts of anticorrosion and Fig. 5.
Referring to Figure 10 a-10h, the job practices of anticorrosion stake of the present invention, comprise the steps:
A, utilize all casing drill, be drilled in the boring of stake position place's injection projected depth by the drill bit castings in steel sleeve 21 and steel sleeve 21, bore diameter is 600～1500mm;
B, drilling rod and drill bit are proposed to a stake hole;
C, will insert in the stake hole with the capsule formula anti-corrosive apparatus of shoe, and will described anticorrosion shoe 3 be placed to the predetermined position bottom a hole;
D, to the interior insertion tremie 20 of coating utricule 1 of the formula of the capsule with the shoe anti-corrosive apparatus in the stake hole, and by tremie 20 to coating the interior continuous placing expansive concrete 13 of utricule 1, the flow of perfusion expansive concrete 13 is 0.05～1.0m
3/ min, approach the coating interior top of utricule 1 until coat the interior expansive concrete 13 of utricule 1, then insert reinforcement member 14 at once in the expansive concrete 13 in clad type utricule 1, add rib component 14 and adopt and insert reinforcing cage technique after vibration insert in pile body expansive concrete 9;
E, utilization is with the Grouting Pipe 4 of the capsule formula anti-corrosive apparatus of shoe, inject to the periphery of described coating utricule 1 sidewall the anticorrosion slurries 19 that are mixed with expansion agent with the grouting pressure that is less than 0.5MPa by low-pressure grouting hole 6, until anticorrosion slurries 19 overflow ground, after standing a period of time, again each the high-pressure slip-casting hole 7 by Grouting Pipe 4 with the grouting pressure of 1-5MPa to injection anticorrosion slurries 19 in the space between described coating utricule 1 lateral wall and stake hole, form the fixed thin layer 16 of expansive cement mortar that coats utricule 1 lateral wall after slurry consolidation, and final with a hole sidewall soil body adhesive solidification, be integrated, before coating utricule 1 side wall grouting, utilize all casing drill to extract section by section steel sleeve 21, meanwhile or afterwards implement a stake side grouting with plunger,
F, to pile body expansive concrete 13 is fixed reach design strength and require after, by pile crown concrete dabbing, and build anticorrosive concrete to a little more than the design of pile top absolute altitude in the described coating utricule 1 at pile crown position, form anticorrosion pile cover 18 after the sclerosis levelling.
If run in above-mentioned steps C in a hole, exist underground water to hinder the capsule formula anti-corrosive apparatus with shoe to insert the stake hole, by described anticorrosion shoe 3 sinkings to after in underground water, the underground water in the stake hole is extracted in the low-pressure grouting hole 6 that utilizes drainage pump to pass through Grouting Pipe 4 bottoms out, progressively anticorrosion shoe 3 is inserted into to predetermined depth simultaneously;
If run in above-mentioned steps C in a hole, exist underground water to hinder the capsule formula anti-corrosive apparatus with shoe to insert the stake hole, tremie 20 is inserted in described coating utricule 1 in advance, and will coat utricule 1 and fix with conduit 20 colligations, utilize the deadweight of tremie 20 to offset buoyancy force of underground water, thus will be with the capsule formula anti-corrosive apparatus sinking of shoe to predetermined depth.
Referring to Figure 11 a-11f, the job practices of anticorrosion stake of the present invention, comprise the steps:
A, in the boring of stake position place injection projected depth, concrete grammar be that jumping chisel frame high pressure jet grouting rig 22 is in place, the earth's surface casing 23 interior employing low-pressure fuel injection slurry coat method of locating in the stake position or cement paste 24 or clear water 25 drilling and forming holes are to projected depth;
B, start high-pressure hydraulic pump, pump pressure 20～40MPa and low-pressure grouting pump, pump pressure 2～8MPa, simultaneously with rotating speed: 8～25r/min, speed-raising: while the speed of 8～25cm/min is sprayed, promote drilling rod to earth's surface;
C, will hammer 26 installation in position into shape with capsule formula anti-corrosive apparatus and the vibratory impulse of shoe, and under the jerk effect of vibratory impulse hammer 26, will shake in the slurries of stake hole with the capsule formula anti-corrosive apparatus of shoe gradually and charge and attack into to desired depth;
D, to the interior insertion tremie 20 of coating utricule 1 of the formula of the capsule with the shoe anti-corrosive apparatus in the stake hole, and by tremie 20 to coating the interior continuous placing expansive concrete 13 of utricule 1, the flow of building expansive concrete 13 is 0.05～1.0m
3/ min, approach and coat the interior top of utricule 1 until coat the interior expansive concrete 13 of utricule 1, then inserts reinforcement member 14 at once in the expansive concrete 13 in clad type utricule 1, adds rib component 14 and adopt after vibration and insert reinforcing cage technique and insert;
E, utilization is with the Grouting Pipe 4 of the capsule formula anti-corrosive apparatus of shoe, inject to the periphery of described coating utricule 1 sidewall the anticorrosion slurries 19 that are mixed with expansion agent with the grouting pressure that is less than 0.5MPa by low-pressure grouting hole 6, until anticorrosion slurries 19 overflow ground, after standing a period of time, again each the high-pressure slip-casting hole 7 by Grouting Pipe 4 with the grouting pressure of 1-5MPa to injection anticorrosion slurries 19 in the space between described coating utricule 1 lateral wall and stake hole, form the fixed thin layer 16 of expansive cement mortar that coats utricule 1 lateral wall after slurry consolidation, and final with a hole sidewall soil body adhesive solidification, be integrated,
F, to pile body expansive concrete 13 is fixed reach design strength and require after, by pile crown concrete dabbing, and build anticorrosive concrete to a little more than the design of pile top absolute altitude in the described coating utricule 1 at pile crown position, form anticorrosion pile cover 18 after the sclerosis levelling.
If run in above-mentioned steps C in a hole, exist underground water to hinder the capsule formula anti-corrosive apparatus with shoe to insert the stake hole, by described anticorrosion shoe 3 sinkings to after in underground water, the underground water in the stake hole is extracted in the low-pressure grouting hole 6 that utilizes drainage pump to pass through Grouting Pipe 4 bottoms out, progressively anticorrosion shoe 3 is inserted into to predetermined depth simultaneously;
If run in above-mentioned steps C in a hole, exist underground water to hinder the capsule formula anti-corrosive apparatus with shoe to insert the stake hole, tremie 20 is inserted in described coating utricule 1 in advance, and will coat utricule 1 and fix with conduit 20 colligations, utilize the deadweight of tremie 20 to offset buoyancy force of underground water, thus will be with the capsule formula anti-corrosive apparatus sinking of shoe to predetermined depth.
Referring to Figure 12 a-12g, the job practices of anticorrosion stake of the present invention, comprise the steps:
A, prepare crane, more piece steel sleeve 21 and grab bucket 27, utilize grab bucket 27 to dig out the soil body at place, stake position in head saves steel sleeve 21, discharge gradually along with the soil body in steel sleeve, steel pipe slip casting sinks down into a little more than earth's surface and locates, then hang second section steel sleeve 21, the bottom of second section steel pipe is connected with first segment steel pipe top, completing after connecting continues to utilize the grab bucket 27 punching modes of grabbing to discharge a stake hole than the corrosivity soil body in the second section steel pipe of depths, so circulation, until steel sleeve 21 sinks to the designing pile length degree of depth;
B, the 27 proposition stake holes of grabbing bucket;
C, will insert in the stake hole with the capsule formula anti-corrosive apparatus of shoe, and will described anticorrosion shoe 3 be placed to the predetermined position bottom a hole;
D, to the interior insertion tremie 20 of coating utricule 1 of the formula of the capsule with the shoe anti-corrosive apparatus in the stake hole, and pass through tremie 20 to coating the interior continuous placing expansive concrete 13 of utricule 1, approach and coat the interior top of utricule 1 until coat the interior expansive concrete 13 of utricule 1, then insert reinforcement member 14 at once in the expansive concrete 13 in clad type utricule 1;
E, utilization is with the Grouting Pipe 4 of the capsule formula anti-corrosive apparatus of shoe, inject to the periphery of described coating utricule 1 sidewall the anticorrosion slurries 19 that are mixed with expansion agent with the grouting pressure that is less than 0.5MPa by low-pressure grouting hole 6, until anticorrosion slurries 19 overflow ground, after standing a period of time, again each the high-pressure slip-casting hole 7 by Grouting Pipe 4 with the grouting pressure of 1-5MPa to injection anticorrosion slurries 19 in the space between described coating utricule 1 lateral wall and stake hole, form the fixed thin layer 16 of expansive cement mortar that coats utricule 1 lateral wall after slurry consolidation, and final with a hole sidewall soil body adhesive solidification, be integrated,
In described step e, utilize when with the Grouting Pipe 4 of the capsule formula anti-corrosive apparatus of shoe, by low-pressure grouting hole 6, with the grouting pressure that is less than 0.5MPa, to the peripheral sidewall of described coating utricule 1, injecting the anticorrosion slurries 19 that are mixed with expansion agent, utilizing high-frequency electric machines 29 to drive vibration dip pipe extractor 28 extracts steel sleeve 21 section by section, after utilizing vibration dip pipe extractor 28 that whole penstock vibrations are promoted out to a hole, continue slip casting until anticorrosion slurries 19 overflow a hole; In described step F, after adding rib component 14 and laying and put in place, after 13 initial sets of pile body expansive concrete, by pile crown concrete dabbing, and at the interior colligation distributing bar of the utricule 1 at pile crown position, build anticorrosive concrete to a little more than the design of pile top absolute altitude, form anticorrosion pile cover 18 after the sclerosis levelling.
F, to pile body expansive concrete 13 is fixed reach design strength and require after, by pile crown concrete dabbing, and build anticorrosive concrete to a little more than the design of pile top absolute altitude in the described coating utricule 1 at pile crown position, form anticorrosion pile cover 18 after the sclerosis levelling.
If run in above-mentioned steps C in a hole, exist underground water to hinder the capsule formula anti-corrosive apparatus with shoe to insert the stake hole, by described anticorrosion shoe 3 sinkings to after in underground water, the underground water in the stake hole is extracted in the low-pressure grouting hole 6 that utilizes drainage pump to pass through Grouting Pipe 4 bottoms out, progressively anticorrosion shoe 3 is inserted into to predetermined depth simultaneously;
If run in above-mentioned steps C in a hole, exist underground water to hinder the capsule formula anti-corrosive apparatus with shoe to insert the stake hole, tremie 20 is inserted in described coating utricule 1 in advance, and will coat utricule 1 and fix with conduit 20 colligations, utilize the deadweight of tremie 20 to offset buoyancy force of underground water, thus will be with the capsule formula anti-corrosive apparatus sinking of shoe to predetermined depth.
Embodiment recited above is described the preferred embodiment for the present invention; not scope of the present invention is limited; design under the prerequisite of spirit not breaking away from the present invention; various distortion and improvement that the common engineers and technicians in this area make technical scheme of the present invention, all should fall in the definite protection domain of claims of the present invention.
Claims (12)
1. with the capsule formula anti-corrosive apparatus of shoe, it is characterized in that: the coating utricule (1) that comprises the tubular that anticorrosive is made, in coating utricule (1), external surface is respectively rough surface, the bottom coated in utricule (1) is provided with backing (2), the periphery of backing (2) is connected with the sidewall that coats utricule (1), coat the lower end that is positioned at backing (2) in utricule (1) and be provided with an anticorrosion shoe of hard (3), be provided with at least one Grouting Pipe (4) along the axis direction that coats utricule (1) near coating utricule (1) outside, the bottom of every Grouting Pipe (4) extends to the bottom end vicinity that coats utricule (1), a low-pressure grouting hole (6) and a plurality of high-pressure slip-castings hole (7) are located to be provided with respectively near described backing (2) in bottom in every Grouting Pipe (4), described Grouting Pipe (4) is injected anticorrosion slurries (19) for the periphery to coating utricule (1) sidewall, described backing (2) comprises the sidewall of tubular, the height of cylindrical sidewall is 50-500mm, between the sidewall of the cylindrical sidewall of backing (2) and described coating utricule (1), adopt stacked overlap joint hot extrusion to be weldingly connected, the top of the cylindrical sidewall of backing (2) has the annular edge of a wing, the upper end on the annular edge of a wing is equipped with steel deck-plate (5), be provided with sealing joint strip or asbestos cord wire rod or the rubber gasket of water-swellable between the annular edge of a wing of the bottom surface of steel deck-plate (5) and described backing (2), described anticorrosion shoe (3) is the cylindricality identical with the cross section of described coating utricule (1), the middle part of anticorrosion shoe (3) is provided with cavity (11), the lateral wall of anticorrosion shoe (3) is provided with the groove that multiple tracks 10-30mm is dark (12), anticorrosion shoe (3) is connected with described coating utricule (1) colligation by the multiple tracks clip (10) that is positioned at groove (12) and locates, the middle part of steel deck-plate (5) has through hole, the periphery of steel deck-plate (5) middle through-hole has the sleeve to downward-extension, sleeve stretches into downwards in described cavity (11).
2. the formula of the capsule with shoe anti-corrosive apparatus as claimed in claim 1, it is characterized in that: the inside and outside surface of described coating utricule (1) is respectively the latticed or cellular fin or corrugated of fish scale-shaped, coat utricule (1) cross section be shaped as circle or regular polygon or " work " font or " T " font or " recessed " font.
3. the formula of the capsule with shoe anti-corrosive apparatus as claimed in claim 2, it is characterized in that: the aperture in described low-pressure grouting hole (6) is 10-50mm, the appearance in low-pressure grouting hole (6) is enclosed with filter screen (8), the aperture in described high-pressure slip-casting hole (7) is 5-36mm, the surface in high-pressure slip-casting hole (7) is by the rubber sleeve hard-pressed bale, geotextiles or polyester plastic material that described coating utricule (1) and described backing (2) adopt polyethylene (PE) or polyvinyl chloride (PVC) or surface to be coated with corrosion-inhibiting coating are made, coating utricule (1) and backing (2) thickness is 0.5-10mm.
4. the formula of the capsule with shoe anti-corrosive apparatus as claimed in claim 3 is characterized in that: described coating utricule (1) adopts high density polyethylene (HDPE) (HDPE) material to make, and the thickness of described steel deck-plate (5) is 5-30mm.
5. right to use requires the anticorrosion stake of any one the described formula of the capsule with shoe anti-corrosive apparatus in 1 to 4, it is characterized in that: comprise the described formula of the capsule with shoe anti-corrosive apparatus, the top that is positioned at described backing (2) in described coating utricule (1) with the capsule formula anti-corrosive apparatus of shoe is filled with expansive concrete (13), in expansive concrete (13) along coating being axially arranged with at least one and adding rib component (14) of utricule (1), the outside that coats utricule (1) is enclosed with the fixed thin layer of expansive cement mortar (16), top pouring alkali-excited cement slurries or polymer cement mortar or geopolymer slurries at expansive concrete (13), the anticorrosion pile cover (18) of rear formation sealing condenses.
6. anticorrosion stake as claimed in claim 5, it is characterized in that: the end that the fixed thin layer of described expansive cement mortar (16) adopts the anticorrosion slurries (19) that are mixed with 6%-12% expansion agent to pass through Grouting Pipe (4) injects fixed formation behind the stake hole, and in each described upper, middle and lower section that adds rib component (14), being set with respectively a plurality ofly to medium-height trestle (15), each adds on termination, rib component (14) bottom and is respectively installed with an anti-guard housing (17).
7. the job practices of anticorrosion stake as claimed in claim 5, is characterized in that: comprise the steps:
A, in the stake hole of stake position place injection projected depth;
B, related tool is proposed to a stake hole;
C, will insert in the stake hole with the capsule formula anti-corrosive apparatus of shoe, and will described anticorrosion shoe (3) be placed to the predetermined position bottom a hole;
D, in the coating utricule (1) of the formula of the capsule with the shoe anti-corrosive apparatus in the stake hole, insert tremie (20), and pass through tremie (20) to coating utricule (1) interior continuous placing expansive concrete (13), approach and coat the interior top of utricule (1) until coat interior the expansive concrete of utricule (1) (13), then insert reinforcement member (14) to clad type utricule (1) in interior expansive concrete (13) at once;
E, utilization is with the Grouting Pipe (4) of the capsule formula anti-corrosive apparatus of shoe, inject to the periphery of described coating utricule (1) sidewall the anticorrosion slurries (19) that are mixed with expansion agent with the grouting pressure that is less than 0.5MPa by low-pressure grouting hole (6), until anticorrosion slurries (19) overflow ground, after standing a period of time, again each the high-pressure slip-casting hole (7) by Grouting Pipe (4) with the grouting pressure of 1-5MPa to injection anticorrosion slurries (19) in the space between described coating utricule (1) lateral wall and stake hole, form the fixed thin layer of expansive cement mortar (16) that coats utricule (1) lateral wall after slurry consolidation, and final with a hole sidewall soil body adhesive solidification, be integrated,
F, to pile body expansive concrete (13) is fixed reach design strength and require after, by pile crown concrete dabbing, and build anticorrosive concrete to a little more than the design of pile top absolute altitude in the described coating utricule (1) at pile crown position, form anticorrosion pile cover (18) after the sclerosis levelling.
8. anticorrosion pile construction method according to claim 7, it is characterized in that: if run in described step C in a hole, exist underground water to hinder the capsule formula anti-corrosive apparatus with shoe to insert the stake hole, by described anticorrosion shoe (3) sinking to after in underground water, utilize drainage pump to extract the underground water in the stake hole out by the low-pressure grouting hole (6) of described Grouting Pipe (4) bottom, progressively anticorrosion shoe (3) is inserted into to predetermined depth simultaneously.
9. anticorrosion pile construction method according to claim 7, it is characterized in that: if run in described step C in a hole, exist underground water to hinder the capsule formula anti-corrosive apparatus with shoe to insert the stake hole, tremie (20) is inserted in described coating utricule (1) in advance, and will coat utricule (1) and conduit (20) colligation and fix, utilize the deadweight of tremie (20) to offset buoyancy force of underground water, thus will be with the capsule formula anti-corrosive apparatus sinking of shoe to predetermined depth.
10. the job practices of anticorrosion stake according to claim 7, it is characterized in that: also comprise and utilize all casing drill in described steps A, by steel sleeve (21) and the interior drill bit casting drilling and forming hole of steel sleeve (21), bore diameter is 600～1500mm; Utilizing the flow of tremie (20) perfusion expansive concrete in described step D is 0.05～1.0m
3/ min, the described rib component (14) that adds adopts the rear reinforcing cage technique of inserting of vibration in pile body expansive concrete (13) to insert; In described step e, also be included in before coating utricule (1) side wall grouting, utilize all casing drill to extract section by section steel sleeve (21), meanwhile or afterwards implement a stake side grouting with plunger.
11. the job practices of anticorrosion stake according to claim 8, it is characterized in that: in described steps A, also comprise jumping chisel frame high pressure jet grouting rig (22) in placely, in the earth's surface casing (23) at stake position place, employing low-pressure fuel injection slurry coat method or cement paste (24) or clear water (25) drilling and forming hole are to projected depth; Before also being included in described step B and carrying brill, start high-pressure hydraulic pump, pump pressure 20～40MPa and low-pressure grouting pump, pump pressure 2～8MPa, the speed with rotating speed: 8～25r/min, speed-raising: 8～25cm/min promotes drilling rod gradually to earth's surface simultaneously; In described step C, also comprise the capsule formula anti-corrosive apparatus with shoe and vibratory impulse hammer (26) installation in position, and, under the jerk effect of vibratory impulse hammer (26), will shake in the slurries of stake hole with the capsule formula anti-corrosive apparatus of shoe gradually and charge and attack into to desired depth; The flow of building expansive concrete (13) in described step D in the coating utricule (1) of the capsule formula anti-corrosive apparatus to shoe is 0.05～1.0m
3/ min, the described rib component (14) that adds adopts the rear reinforcing cage technique of inserting of vibration to insert.
12. the job practices of anticorrosion stake according to claim 8, it is characterized in that: also comprise the preparation crane in described steps A, more piece steel sleeve (21) and grab bucket (27), utilize grab bucket (27) to dig out the soil body at place, stake position in head saves steel sleeve (21), discharge gradually along with the soil body in steel sleeve, steel sleeve slip casting sinks down into a little more than earth's surface and locates, then hang second section steel sleeve (21), the bottom of second section steel sleeve is connected with first segment steel sleeve top, completing after connecting continues to utilize grab bucket (27) the punching mode of grabbing to discharge a stake hole than the corrosivity soil body in the second section steel sleeve of depths, so circulation, until steel sleeve (21) sinks to the designing pile length degree of depth, also comprise in described step B grab bucket (27) is proposed to the stake hole, in described step e, utilize when with the Grouting Pipe (4) of the capsule formula anti-corrosive apparatus of shoe, by low-pressure grouting hole (6), with the grouting pressure that is less than 0.5MPa, to the peripheral sidewall injection of described coating utricule (1), being mixed with the anticorrosion slurries (19) of expansion agent, utilizing high-frequency electric machines (29) to drive vibration dip pipe extractor (28) extracts steel sleeve (21) section by section, after utilizing vibration dip pipe extractor (28) that whole penstock vibrations are promoted out to a hole, continue slip casting until anticorrosion slurries (19) overflow a hole, described step F is replaced by following step, after adding rib component (14) and laying and put in place, after pile body expansive concrete (13) initial set, by pile crown concrete dabbing, and in the described utricule (1) at pile crown position the colligation distributing bar, build anticorrosive concrete to a little more than the design of pile top absolute altitude, form anticorrosion pile cover (18) after the sclerosis levelling.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201010133593 CN102002945B (en) | 2010-03-25 | 2010-03-25 | Capsule type anti-corrosion device with pile shoe and anti-corrosion pile using same and construction method |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201010133593 CN102002945B (en) | 2010-03-25 | 2010-03-25 | Capsule type anti-corrosion device with pile shoe and anti-corrosion pile using same and construction method |
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| CN102002945A CN102002945A (en) | 2011-04-06 |
| CN102002945B true CN102002945B (en) | 2013-12-25 |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112127345A (en) * | 2020-09-21 | 2020-12-25 | 中建八局第一建设有限公司 | Soft soil foundation treatment device and foundation treatment construction method |
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| CN102828509B (en) * | 2012-09-26 | 2014-11-05 | 长沙学院 | Joint grouting method from bottom and side of prestressed pipe pile |
| EP2877635B1 (en) * | 2013-09-26 | 2019-01-30 | Grigorij Wagner | Structural component |
| CN104480933B (en) * | 2014-11-14 | 2016-08-17 | 福建建华建材有限公司 | The manufacture method of pencil-type pile tube |
| CN107975041B (en) * | 2017-12-01 | 2023-05-26 | 华侨大学 | Sleeve device for anchor rod corrosion prevention and anchor rod corrosion prevention construction method |
| CN109083148B (en) * | 2018-08-24 | 2021-06-22 | 中铁十四局集团第三工程有限公司 | Pile head construction device for drilling and filling pile and construction method thereof |
| CN109295972A (en) * | 2018-09-25 | 2019-02-01 | 高永光 | Full-sleeve engineering method prefabricated pile perfusion slurry and grouting behind shaft or drift lining concretion technology |
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| CN201826306U (en) * | 2010-03-25 | 2011-05-11 | 中国京冶工程技术有限公司 | Bladder-type anticorrosive device with pile shoe and anticorrosive pile using same |
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| CN2290634Y (en) * | 1997-05-30 | 1998-09-09 | 刘兴辰 | Anti-corrosion treating appts. for on-the-spot pouring pile |
| WO2008044434A1 (en) * | 2006-10-13 | 2008-04-17 | Nakabohtec Corrosion Protecting Co., Ltd. | Coating anticorrosive structure for steel structure |
| CN101614020A (en) * | 2009-07-16 | 2009-12-30 | 中国京冶工程技术有限公司 | Flexible bladder type anti-corrosive apparatus and use the anticorrosion stake and the job practices of this device |
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