CN108396736A - A kind of constructing device and construction method making compound strength core stake - Google Patents
A kind of constructing device and construction method making compound strength core stake Download PDFInfo
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- CN108396736A CN108396736A CN201810456134.2A CN201810456134A CN108396736A CN 108396736 A CN108396736 A CN 108396736A CN 201810456134 A CN201810456134 A CN 201810456134A CN 108396736 A CN108396736 A CN 108396736A
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- 238000010276 construction Methods 0.000 title claims abstract description 31
- 150000001875 compounds Chemical class 0.000 title claims abstract description 27
- 241000894006 Bacteria Species 0.000 claims abstract description 42
- 239000007788 liquid Substances 0.000 claims abstract description 41
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims abstract description 32
- 230000003014 reinforcing effect Effects 0.000 claims abstract description 20
- 239000010410 layer Substances 0.000 claims abstract description 18
- 230000000694 effects Effects 0.000 claims abstract description 11
- 239000002356 single layer Substances 0.000 claims abstract description 5
- 210000001367 artery Anatomy 0.000 claims description 39
- 239000002689 soil Substances 0.000 claims description 39
- 210000003462 vein Anatomy 0.000 claims description 39
- 239000002002 slurry Substances 0.000 claims description 35
- 102000004190 Enzymes Human genes 0.000 claims description 33
- 108090000790 Enzymes Proteins 0.000 claims description 33
- 238000004519 manufacturing process Methods 0.000 claims description 30
- 239000004567 concrete Substances 0.000 claims description 28
- 238000005553 drilling Methods 0.000 claims description 28
- 239000000243 solution Substances 0.000 claims description 27
- 238000013461 design Methods 0.000 claims description 22
- 230000005684 electric field Effects 0.000 claims description 22
- 239000004576 sand Substances 0.000 claims description 15
- 238000003756 stirring Methods 0.000 claims description 15
- 238000002347 injection Methods 0.000 claims description 12
- 239000007924 injection Substances 0.000 claims description 12
- 239000003651 drinking water Substances 0.000 claims description 10
- 235000020188 drinking water Nutrition 0.000 claims description 10
- 230000035699 permeability Effects 0.000 claims description 10
- 229910000831 Steel Inorganic materials 0.000 claims description 7
- 238000007596 consolidation process Methods 0.000 claims description 7
- 244000005700 microbiome Species 0.000 claims description 7
- 239000010959 steel Substances 0.000 claims description 7
- VTYYLEPIZMXCLO-UHFFFAOYSA-L Calcium carbonate Chemical compound [Ca+2].[O-]C([O-])=O VTYYLEPIZMXCLO-UHFFFAOYSA-L 0.000 claims description 6
- FAPWRFPIFSIZLT-UHFFFAOYSA-M Sodium chloride Chemical compound [Na+].[Cl-] FAPWRFPIFSIZLT-UHFFFAOYSA-M 0.000 claims description 6
- XSQUKJJJFZCRTK-UHFFFAOYSA-N Urea Chemical compound NC(N)=O XSQUKJJJFZCRTK-UHFFFAOYSA-N 0.000 claims description 6
- 239000004202 carbamide Substances 0.000 claims description 6
- 238000009792 diffusion process Methods 0.000 claims description 6
- 238000013508 migration Methods 0.000 claims description 6
- 230000005012 migration Effects 0.000 claims description 6
- 239000002245 particle Substances 0.000 claims description 6
- 230000002787 reinforcement Effects 0.000 claims description 6
- 235000015097 nutrients Nutrition 0.000 claims description 5
- 239000012266 salt solution Substances 0.000 claims description 5
- 230000033558 biomineral tissue development Effects 0.000 claims description 4
- 239000011440 grout Substances 0.000 claims description 4
- 230000000813 microbial effect Effects 0.000 claims description 4
- UXVMQQNJUSDDNG-UHFFFAOYSA-L Calcium chloride Chemical compound [Cl-].[Cl-].[Ca+2] UXVMQQNJUSDDNG-UHFFFAOYSA-L 0.000 claims description 3
- 241001074085 Scophthalmus aquosus Species 0.000 claims description 3
- 108010073771 Soybean Proteins Proteins 0.000 claims description 3
- 230000000035 biogenic effect Effects 0.000 claims description 3
- 230000000903 blocking effect Effects 0.000 claims description 3
- 229910000019 calcium carbonate Inorganic materials 0.000 claims description 3
- 238000004210 cathodic protection Methods 0.000 claims description 3
- 238000004140 cleaning Methods 0.000 claims description 3
- 238000005260 corrosion Methods 0.000 claims description 3
- 230000007797 corrosion Effects 0.000 claims description 3
- 239000013078 crystal Substances 0.000 claims description 3
- 238000007599 discharging Methods 0.000 claims description 3
- 238000001962 electrophoresis Methods 0.000 claims description 3
- 238000002513 implantation Methods 0.000 claims description 3
- 238000002955 isolation Methods 0.000 claims description 3
- 238000005259 measurement Methods 0.000 claims description 3
- 238000002156 mixing Methods 0.000 claims description 3
- 239000011148 porous material Substances 0.000 claims description 3
- 238000011084 recovery Methods 0.000 claims description 3
- 238000009991 scouring Methods 0.000 claims description 3
- 239000011378 shotcrete Substances 0.000 claims description 3
- 239000002893 slag Substances 0.000 claims description 3
- 239000011780 sodium chloride Substances 0.000 claims description 3
- 235000019710 soybean protein Nutrition 0.000 claims description 3
- 239000007921 spray Substances 0.000 claims description 3
- 230000006641 stabilisation Effects 0.000 claims description 3
- 238000011105 stabilization Methods 0.000 claims description 3
- 230000008961 swelling Effects 0.000 claims description 3
- 239000002699 waste material Substances 0.000 claims description 3
- PEDCQBHIVMGVHV-UHFFFAOYSA-N Glycerine Chemical compound OCC(O)CO PEDCQBHIVMGVHV-UHFFFAOYSA-N 0.000 claims description 2
- 235000016709 nutrition Nutrition 0.000 claims 2
- 230000035764 nutrition Effects 0.000 claims 2
- 238000009938 salting Methods 0.000 claims 2
- 238000000034 method Methods 0.000 abstract description 4
- 238000003912 environmental pollution Methods 0.000 abstract description 2
- 238000005516 engineering process Methods 0.000 description 5
- 230000000050 nutritive effect Effects 0.000 description 2
- 150000003839 salts Chemical class 0.000 description 2
- 230000009471 action Effects 0.000 description 1
- 230000004888 barrier function Effects 0.000 description 1
- 238000009412 basement excavation Methods 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 238000011161 development Methods 0.000 description 1
- 230000018109 developmental process Effects 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 230000005611 electricity Effects 0.000 description 1
- 238000011068 loading method Methods 0.000 description 1
- 230000007774 longterm Effects 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000004062 sedimentation Methods 0.000 description 1
Classifications
-
- 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
- E02D5/34—Concrete or concrete-like piles cast in position ; Apparatus for making same
-
- E—FIXED CONSTRUCTIONS
- E02—HYDRAULIC ENGINEERING; FOUNDATIONS; SOIL SHIFTING
- E02D—FOUNDATIONS; EXCAVATIONS; EMBANKMENTS; UNDERGROUND OR UNDERWATER STRUCTURES
- E02D15/00—Handling building or like materials for hydraulic engineering or foundations
- E02D15/02—Handling of bulk concrete specially for foundation or hydraulic engineering purposes
- E02D15/04—Placing concrete in mould-pipes, pile tubes, bore-holes or narrow shafts
-
- E—FIXED CONSTRUCTIONS
- E02—HYDRAULIC ENGINEERING; FOUNDATIONS; SOIL SHIFTING
- E02D—FOUNDATIONS; EXCAVATIONS; EMBANKMENTS; UNDERGROUND OR UNDERWATER STRUCTURES
- E02D19/00—Keeping dry foundation sites or other areas in the ground
- E02D19/06—Restraining of underground water
- E02D19/12—Restraining of underground water by damming or interrupting the passage of underground water
Landscapes
- Engineering & Computer Science (AREA)
- Structural Engineering (AREA)
- Life Sciences & Earth Sciences (AREA)
- General Engineering & Computer Science (AREA)
- General Life Sciences & Earth Sciences (AREA)
- Mining & Mineral Resources (AREA)
- Paleontology (AREA)
- Civil Engineering (AREA)
- Environmental & Geological Engineering (AREA)
- Hydrology & Water Resources (AREA)
- Consolidation Of Soil By Introduction Of Solidifying Substances Into Soil (AREA)
Abstract
The invention discloses a kind of constructing device making compound strength core stake, including outer immersed tube and interior immersed tube, the outer immersed tube and interior immersed tube form double-barrel structure, and the tube wall of the outer immersed tube is double-layer structure, and it acts as supporting enclosing；Cavity is formed between the inner layer tube wall and outer wall of the outer immersed tube；It is connected using screw thread pullover between the cavity and woven hose, woven hose is used to bacterium solution and reinforcing liquid being transported in cavity, and delivery hole is arranged on the pipe face of the inner layer tube wall of the outer immersed tube；The interior immersed tube is single layer structure, its effect is mainly used for enclosing, the invention also discloses a kind of construction methods using the constructing device for making compound strength core stake, it is good with water isolating, intensity is high, environmental pollution is small, when construction can with other technique parallel operations, can effectively shorten the construction period the advantages of.
Description
Technical field
The present invention relates to a kind of constructing device of compound strength core stake and construction method more particularly to a kind of compound strength cores of making
The constructing device and construction method of stake.
Background technology
Pile foundation is both a kind of time-honored foundation pattern and one kind is widely used, quickly grows, vitality is very strong
Foundation pattern.Urban construction three-dimensional, traffic high speed, and improve comprehensive living environment and have become modern civil engineering
Feature.Pile foundation technology is widely used in the every field of civil engineering, builds the larger architectural engineering of scale generally, can all use
To pile foundation technology, either as the pile foundation of bearing building weight or as Support of Foundation Pit Excavation structure.With science skill
The continuous development of art and engineering construction and industrial technology, the type and pile base model of stake, construction technology and equipment and pile foundation
Theoretical and design method, there is prodigious evolution.The high capacity, the stability that have due to pile foundation is good, sedimentation and difference are heavy
The features such as small, settlement stability is fast, anti-seismic performance is good and adapts to various complex geological conditions drops so that is widely used
But common stake or steel using amount is larger thus cost is higher or concrete amount is more, the secondary dirt caused by environment
It contaminates more serious.
Invention content
The purpose of the present invention is exactly to solve the above-mentioned problems, to provide a kind of constructing device making compound strength core stake and apply
Work method, it have water shutoff, have certain bearing capacity and long-time stability at the same reduced in engineering construction cost and
The advantages of construction time.
To achieve the goals above, the present invention adopts the following technical scheme that：
A kind of constructing device making compound strength core stake, including outer immersed tube and interior immersed tube, the outer immersed tube and interior immersed tube form double
The tube wall of barrel structure, the outer immersed tube is double-layer structure, and it acts as supporting enclosing；The inner layer tube wall of the outer immersed tube and
Cavity is formed between outer wall；Connected using screw thread pullover between the cavity and woven hose, woven hose be used for bacterium solution and
It reinforces liquid to be transported in cavity, delivery hole is set on the pipe face of the inner layer tube wall of the outer immersed tube；The interior immersed tube is single layer knot
Structure, effect are mainly used for enclosing, and interior immersed tube is connect by drinking-water pipe with the pump assembly that draws water.
The brill a diameter of 14 ~ 15mm of oil of the delivery hole, is distributed in quincunx on the pipe face of outer immersed tube inner layer tube wall, institute
The area for stating delivery hole is the 15% ~ 20% of the pipe face area of outer immersed tube inner layer tube wall.
The outer immersed tube and outer immersed tube are steel immersed tube, play the role of going along with sb. to guard him well, improve integral strength.
The cathode of the outer immersed tube connection power supply, forms cathodic protection, realizes that immersed tube prevents the effect of corrosion.
A kind of construction method using the constructing device for making compound strength core stake, the specific steps are：
Step 1：According to design requirement, the field on-ground measurement after smooth places marking line, determines the stake position of strength core stake；
Step 2：Hole position is determined according to design requirement, and is marked；
Step 3：It is drilled using drilling machine, drilling rod pierces stratum, the follow-up of retaining wall sleeve, and scouring media passes through drilling rod and drill bit
Channel enter drilling, drilling waste slag is discharged along between drilling rod and sleeve；
Step 4：Vibration on Start-up machine sinks to outer immersed tube in soil after 3.0 ~ 5.0 meters, and immersed tube effect is observed in short stay, and is observed
Surrounding soil situation continues step 5 if not swelling, if protuberance, suspends bobbing machine, continues outer immersed tube sinking to soil after repairing
In；
Step 5：Continue Vibration on Start-up machine, outer immersed tube is sunk down into the depth set, often sinks in sinking watching 2.0 meters, stays
It shakes 1 minute；
Step 6：Step 4 is repeated to step 5, sinks to interior immersed tube；
Step 7：Configure the production arteries and veins enzyme bacterium solution and reinforce liquid that microbial mineralization needs；The production arteries and veins enzyme bacterium solution is by concentration OD600
=1.5 Pasteur's bud pole bacterium and its biogenic nutrient salt solution collectively form；The reinforcing solution is by a concentration of
The urea liquid of the calcium chloride solution of 0.5 ~ 1.2mol/L, a concentration of 0.5 ~ 1.2mol/L is mixed；
Step 8：The woven hose of immersed tube in the pump assembly that will draw water access, conveying production arteries and veins enzyme bacterium solution connects outer immersed tube inner wall, opens and takes out
Water pump assembly and woven hose, using the head difference between interior immersed tube and outer immersed tube, in the soil body between interior immersed tube and outer immersed tube
Stable seepage field is formed, makes production arteries and veins enzyme bacterium solution to the ground diffusion around drilling, and be adsorbed on soil body particle；
Step 9：Outer immersed tube is connect into DC power supply cathode, interior immersed tube connects DC power supply anode；It is closed the switch of DC power supply,
DC electric field is formed between the woven hose of power cathode and the drinking-water pipe of power anode, after DC electric field acts on 4 ~ 8h, cut-out
The switch of DC power supply；DC electric field applies opportunity as in production arteries and veins enzyme bacterium attachment stage, negatively charged production arteries and veins enzyme bacterium is with electrophoresis
Form is moved to power anode, keeps the production arteries and veins enzyme bacterium for being enriched in proximal end at production arteries and veins enzyme bacterium solution injection remote at arteries and veins enzyme bacterium solution injection toward producing
The redistribution of production arteries and veins enzyme bacterium spatially is realized in end migration；
Step 10：DC power supply is cut off, after standing for 24 hours, the woven hose that conveying is reinforced to liquid accesses outer immersed tube inner wall, opens simultaneously
Draw water pump assembly and woven hose, using the head difference between interior immersed tube and outer immersed tube, the soil body between interior immersed tube and outer immersed tube
It is interior to form stable seepage field, make reinforcing liquid to the ground diffusion around drilling, and with the production arteries and veins that is adsorbed on soil body particle
Enzyme bacterium generates mineralising reaction, generates the calcium carbonate crystal with cementation；
Step 11：Outer immersed tube is connect into power cathode, interior immersed tube connects power anode；It is closed the switch of DC power supply, in power supply the moon
DC electric field is formed between the woven hose of pole and the drinking-water pipe of power anode, after DC electric field acts on 4 ~ 8h, cuts off direct current
The switch in source；It is to reinforce the liquid stage of reaction that DC electric field, which applies opportunity, and negatively charged reinforcing liquid is with electrophoretic type to power supply
Anode moves, and to make to be enriched in the reinforcing liquid for reinforcing proximal end at liquid injection toward distal migration at liquid injection is reinforced, realizes and reinforces
The redistribution of liquid spatially；
Step 12：Step 10 is repeated to step 11 up to soil stabilization to design strength；
Step 13：Concrete slurry stirring strength core is carried out in interior immersed tube to make；
Foundation pit is dug according to design first, then delivery pump continuously inculcates the good concrete slurry without passing through isolation of configuration, together
When blender be stirred, stirring number once to whitewash, once stirring or the second gunite triple mixing；When concrete slurry reaches
When to grout outlet, in stake base position pneumatically placed concrete slurries 30S, make slurries that an end be fully achieved, when mouth spray reaches stake top absolute altitude
When, blender stops being promoted, and is again stirring for the several seconds, the pile crown to ensure strength core stake is uniformly closely knit；
Step 14：After forming the compound strength core stake of microorganism, it is laid at the top of the ground that the stake of strength core is collectively formed with inter-pile soil soft
The permeable sand bedding course of property, applies prefabricating load at the top of permeability flexible sand bedding course, makes pore water in inter-pile soil along sand pile and soft
Property the drainage channel discharge that is formed of permeable sand bedding course, inter-pile soil generates consolidation, improves the bearing capacity of inter-pile soil, microorganism is compound
The permeability flexible sand bedding course of weak soil and overlying after the stake of strength core, discharging consolidation just together forms the higher compound strength core of bearing capacity
Stake.
In the step 1, the stake bit interval of strength core stake is placed.
In the step 2, the interval error of horizontal direction hole position between any two should not exceed 50mm, vertical direction hole position
Interval error between any two should not exceed 100mm；Hole bottom deflection size is not more than the 3% of design length；Hole depth is not less than
Design length is also not more than the 1% of design length.
In the step 3, boring direction is controlled using clinograph, angular deflection is not more than 3 °, prevents the hole drilled out
There is deflection；When dry drilling, minor spiral machine drill hole is used.
The sodium chloride of soybean protein arteries and veins containing 5.0g, the tryptose arteries and veins of 15g, 5.0g in the nutrient salt solution per 100g
And the urea of 20g, the pH value of the nutrient salt solution is 7.3.
The pump assembly that draws water is dry vacuum pump assembly or jet stream pump assembly, and the water header to draw water in pump assembly is
Diameter is the steel pipe of 75 ~ 150mm, and flanged joint is used between water header and interior immersed tube.
The intensity of the DC electric field is 0.5 ~ 1.0V/cm.
When the step 13 carries out concrete slurry stirring strength core making in interior immersed tube, concrete slurry is higher than basis
0.5 meter of ground；When stopping delivering concrete slurries because of failure, blender is sunk down into and is stopped at slurry or less 0.5m, recoveries is waited to supply
It when slurry, then is promoted, if downtime is more than 3h, it should which Cleaning pipes prevent concrete slurry hardening from blocking pipeline, concrete grout
It is conserved 14 days after liquid implantation.
The strength core stake reinforcement depth is not more than 20m, and when using dry construction, strength core stake reinforcement depth is not more than 15m, interior
Immersed tube diameter is not less than 500mm, and outer immersed tube radius is not less than 1000mm.
Beneficial effects of the present invention：
The present invention has water isolating good, and intensity is high, and environmental pollution is small, and when construction can be with other technique parallel operations, energy
Effectively shorten the construction period the advantages of, can be used for that coastal area is more extreme, rugged environment, can be used for other rings
Border, the present invention is not by geographical environment and construction weather, and the influence of construction environment, the construction site needed is smaller, in work progress
It is small to generate noise, the normal production and living of surrounding resident are not interfered with when downtown is constructed, the present invention has water shutoff, holds
Loading capability and performance steady in a long-term are excellent, while construction cost and construction time are reduced in engineering, can be used as effective bearing
Structure will not generate secondary pollution to environment in work progress, have the advantages that economic and environment-friendly；Interior immersed tube cylinder is single layer in the present invention
Structure is used for enclosing, by seepage flow and electric field action, makes the uniformity of consolidation effect during microbial mineralization that can more be protected
Card, therefore the soil strength higher after obtained reinforcing.
Description of the drawings
Fig. 1 is the constructing device schematic diagram for making compound strength core stake；
Fig. 2 is the construction method flow chart of the present invention.
Wherein, 1. outer immersed tube；Immersed tube in 2.；3. draw water pump assembly；4. drinking-water pipe；5. woven hose；6. bacterium solution container；7. adding
Solid-liquid container；8. power anode；9. power cathode, 10. compound strength core stakes.
Specific implementation mode
The invention will be further described with embodiment below in conjunction with the accompanying drawings.
As shown in Figure 1, a kind of constructing device making compound strength core stake, including outer immersed tube 1 and interior immersed tube 2,1 He of outer immersed tube
Interior immersed tube 2 forms double-barrel structure, and the tube wall of outer immersed tube 1 is double-layer structure, and it acts as supporting enclosing；Outer immersed tube 1 it is interior
Cavity is formed between layer tube wall and outer wall；It is connected using screw thread pullover between cavity and woven hose 5, woven hose 5 is used for will
The reinforcing liquid in bacterium solution and reinforcing liquid container 7 in bacterium solution container 6 is transported in cavity, the pipe face of the inner layer tube wall of outer immersed tube 1
Upper setting delivery hole；The brill a diameter of 14 ~ 15mm of oil of delivery hole, is distributed in quincunx on the pipe face of 1 inner layer tube wall of outer immersed tube,
The area of the delivery hole is the 15% ~ 20% of the pipe face area of 1 inner layer tube wall of outer immersed tube, and interior immersed tube 2 is single layer structure, effect
It is mainly used for enclosing, interior immersed tube 1 is connect by drinking-water pipe 4 with the pump assembly that draws water.
Outer immersed tube 1 and outer immersed tube 2 are steel immersed tube, play the role of going along with sb. to guard him well, improve integral strength, and outer immersed tube 1 connects
Power cathode 9 forms cathodic protection, realizes that outer immersed tube 1 prevents the effect of corrosion, interior immersed tube 2 from connecing power anode 8.
As shown in Fig. 2, a kind of construction method using the constructing device for making compound strength core stake, the specific steps are：
Step 1：According to design requirement, the field on-ground measurement after smooth places marking line, determines the stake position of strength core stake, strength core
The stake bit interval of stake is placed；
Step 2：Hole position is determined according to design requirement, and is marked, and the interval error of horizontal direction hole position between any two is not answered
More than 50mm, the interval error of vertical direction hole position between any two should not exceed 100mm；Hole bottom deflection size is no more than design
The 3% of length；Hole depth is not less than design length, is also not more than the 1% of design length；
Step 3：It is drilled using drilling machine, drilling rod pierces stratum, the follow-up of retaining wall sleeve, and scouring media passes through drilling rod and drill bit
Channel enter drilling, drilling waste slag is discharged along between drilling rod and sleeve, for ensure drilling verticality, use drillhole inclination survey
Instrument control boring direction, angular deflection are not more than 3 °, prevent the hole drilled out from deflection occur；When dry drilling, minor spiral is used
Machine drill hole；
Step 4：Vibration on Start-up machine sinks to outer immersed tube 1 in soil after 3.0 ~ 5.0 meters, and immersed tube effect is observed in short stay, and is seen
Surrounding soil situation is examined, if not swelling, continues step 5, if protuberance, suspends bobbing machine, continues to sink outer immersed tube 1 after repairing
In burying；
Step 5：Continue Vibration on Start-up machine, outer immersed tube 1 sunk down into the depth set, is often sunk in sinking watching 2.0 meters,
Vibration staying 1 minute；
Step 6：Step 4 is repeated to step 5, sinks to interior immersed tube 2；
Step 7：Configure the production arteries and veins enzyme bacterium solution and reinforce liquid that microbial mineralization needs；The production arteries and veins enzyme bacterium solution is by concentration OD600
=1.5 Pasteur's bud pole bacterium and its biogenic nutrient salt solution collectively form；The reinforcing solution is by a concentration of
The urea liquid of the calcium chloride solution of 0.5 ~ 1.2mol/L, a concentration of 0.5 ~ 1.2mol/L is mixed；It is molten per 100g nutritive salt
The soybean protein arteries and veins containing 5.0g, the tryptose arteries and veins of 15g, the sodium chloride of 5.0g and the urea of 20g, the nutritive salt are molten in liquid
The pH value of liquid is 7.3；
Step 8：The pump assembly 3 that will draw water accesses interior immersed tube 2, and the woven hose 5 of conveying production arteries and veins enzyme bacterium solution connects 1 inner wall of outer immersed tube, beats
Open draw water pump assembly 3 and woven hose 5, using the head difference between interior immersed tube 2 and outer immersed tube 1, interior immersed tube 2 and outer immersed tube 1 it
Between the soil body in form stable seepage field, make production arteries and veins enzyme bacterium solution to the ground diffusion around drilling, and be adsorbed in soil body particle
On；The pump assembly that draws water is dry vacuum pump assembly or jet stream pump assembly, the water header to draw water in pump assembly be diameter be 75 ~
The steel pipe of 150mm uses flanged joint between water header and interior immersed tube；
Step 9：Step 9：Outer immersed tube 1 is connect into DC power supply cathode 9, interior immersed tube 2 connects DC power supply anode 8；It is closed direct current
The switch in source forms DC electric field, in DC electric field between the woven hose 5 of power cathode 9 and the drinking-water pipe 4 of power anode 8
After acting on 4 ~ 8h, the switch of DC power supply is cut off；DC electric field application opportunity is to produce arteries and veins enzyme bacterium attachment stage, negatively charged
It produces arteries and veins enzyme bacterium to move to power anode 8 with electrophoretic type, makes the past production of production arteries and veins enzyme bacterium for being enriched in proximal end at production arteries and veins enzyme bacterium solution injection
Distal migration at arteries and veins enzyme bacterium solution injection realizes the redistribution of production arteries and veins enzyme bacterium spatially；The intensity of DC electric field is 0.5 ~ 1.0V/
cm；
Step 10：DC power supply is cut off, after standing for 24 hours, the woven hose 5 that conveying is reinforced to liquid accesses 1 inner wall of outer immersed tube, beats simultaneously
Open draw water pump assembly 3 and woven hose 5, using the head difference between interior immersed tube 2 and outer immersed tube 1, interior immersed tube 2 and outer immersed tube 1 it
Between the soil body in form stable seepage field, make reinforcing liquid to the ground diffusion around drilling, and be adsorbed on soil body particle it
On production arteries and veins enzyme bacterium generate mineralising reaction, generate with cementation calcium carbonate crystal；
Step 11：Outer immersed tube 1 is connect into power cathode 9, interior immersed tube 2 connects power anode 8；It is closed the switch of DC power supply, in electricity
DC electric field is formed between the woven hose 5 of source cathode 9 and the drinking-water pipe 4 of power anode 8, after DC electric field acts on 4 ~ 8h, is cut
The switch of disconnected DC power supply；DC electric field application opportunity is to reinforce the liquid stage of reaction, and negatively charged reinforcing liquid is with electrophoresis shape
Formula is moved to power anode 8, and distal migration at the past reinforcing liquid injection of reinforcing liquid of proximal end at liquid injection is reinforced to make to be enriched in,
It realizes and reinforces the redistribution of liquid spatially；
Step 12：Step 10 is repeated to step 11 up to soil stabilization to design strength；
Step 13：Concrete slurry stirring strength core is carried out in interior immersed tube 2 to make；
Foundation pit is dug according to design first, then delivery pump continuously inculcates the good concrete slurry without passing through isolation of configuration, together
When blender be stirred, stirring number once to whitewash, once stirring or the second gunite triple mixing；When concrete slurry reaches
When to grout outlet, in stake base position pneumatically placed concrete slurries 30S, make slurries that an end be fully achieved, when mouth spray reaches stake top absolute altitude
When, blender stops being promoted, and is again stirring for the several seconds, the pile crown to ensure strength core stake is uniformly closely knit；
When carrying out concrete slurry stirring strength core making in interior immersed tube 2, concrete slurry is higher than 0.5 meter of foundation ground；For some reason
When barrier stops delivering concrete slurries, blender is sunk down into and is stopped at slurry or less 0.5m, when waiting recovery for slurry, then promoted, if
Downtime is more than 3h, it should which Cleaning pipes prevent concrete slurry hardening from blocking pipeline, 14 are conserved after concrete slurry implantation
It；
Strength core stake reinforcement depth is not more than 20m, and when using dry construction, strength core stake reinforcement depth is not more than 15m, and interior immersed tube 2 is straight
Diameter is not less than 500mm, and 1 radius of outer immersed tube is not less than 1000mm；
Step 14：After forming the compound strength core stake of microorganism, at the top of the ground that microorganism strength core stake and inter-pile soil collectively form
It is laid with permeability flexible sand bedding course, applies prefabricating load at the top of permeability flexible sand bedding course, makes the pore water in inter-pile soil along sand
The drainage channel discharge that stake and permeability flexible sand bedding course are formed, inter-pile soil generate consolidation, improve the bearing capacity of inter-pile soil, micro- life
It is higher multiple that the permeability flexible sand bedding course of weak soil and overlying after the compound strength core stake of object, discharging consolidation just together forms bearing capacity
Close stake strength core stake 10.
Above-mentioned, although the foregoing specific embodiments of the present invention is described with reference to the accompanying drawings, not protects model to the present invention
The limitation enclosed, those skilled in the art should understand that, based on the technical solutions of the present invention, those skilled in the art are not
Need to make the creative labor the various modifications or changes that can be made still within protection scope of the present invention.
Claims (10)
1. a kind of constructing device making compound strength core stake, which is characterized in that including outer immersed tube and interior immersed tube, the outer immersed tube and
Interior immersed tube forms double-barrel structure, and the tube wall of the outer immersed tube is double-layer structure, and it acts as supporting enclosing；The outer immersed tube
Inner layer tube wall and outer wall between form cavity；It is connected using screw thread pullover between the cavity and woven hose, woven hose
For bacterium solution and reinforcing liquid to be transported in cavity, delivery hole is set on the pipe face of the inner layer tube wall of the outer immersed tube；In described
Immersed tube is single layer structure, and effect is mainly used for enclosing, and interior immersed tube is connect by drinking-water pipe with the pump assembly that draws water.
2. a kind of constructing device making compound strength core stake as described in claim 1, which is characterized in that the brill of the delivery hole
A diameter of 14 ~ the 15mm of oil, is distributed in quincunx on the pipe face of outer immersed tube inner layer tube wall, and the area of the delivery hole is outer immersed tube
The 15% ~ 20% of the pipe face area of inner layer tube wall.
3. a kind of constructing device making compound strength core stake as described in claim 1, which is characterized in that the outer immersed tube and outer
Immersed tube is steel immersed tube, plays the role of going along with sb. to guard him well, improves integral strength.
4. a kind of constructing device making compound strength core stake as described in claim 1, which is characterized in that the outer immersed tube connection
The cathode of power supply forms cathodic protection, realizes that immersed tube prevents the effect of corrosion.
5. using a kind of constructing device making compound strength core stake disclosed in claim 1 construction method it is characterized in that,
The specific steps are：
Step 1：According to design requirement, the field on-ground measurement after smooth places marking line, determines the stake position of strength core stake；
Step 2：Hole position is determined according to design requirement, and is marked；
Step 3：It is drilled using drilling machine, drilling rod pierces stratum, the follow-up of retaining wall sleeve, and scouring media passes through drilling rod and drill bit
Channel enter drilling, drilling waste slag is discharged along between drilling rod and sleeve；
Step 4：Vibration on Start-up machine sinks to outer immersed tube in soil after 3.0 ~ 5.0 meters, and immersed tube effect is observed in short stay, and is observed
Surrounding soil situation continues step 5 if not swelling, if protuberance, suspends bobbing machine, continues outer immersed tube sinking to soil after repairing
In；
Step 5：Continue Vibration on Start-up machine, outer immersed tube is sunk down into the depth set, often sinks in sinking watching 2.0 meters, stays
It shakes 1 minute；
Step 6：Step 4 is repeated to step 5, sinks to interior immersed tube；
Step 7：Configure the production arteries and veins enzyme bacterium solution and reinforce liquid that microbial mineralization needs；The production arteries and veins enzyme bacterium solution is by concentration OD600
=1.5 Pasteur's bud pole bacterium and its biogenic nutrient salt solution collectively form；The reinforcing solution is by a concentration of
The urea liquid of the calcium chloride solution of 0.5 ~ 1.2mol/L, a concentration of 0.5 ~ 1.2mol/L is mixed；Every 100g nutrition
Soybean protein arteries and veins containing 5.0g, the tryptose arteries and veins of 15g, the sodium chloride of 5.0g and the urea of 20g, the nutrition in salting liquid
The pH value of salting liquid is 7.3；
Step 8：The woven hose of immersed tube in the pump assembly that will draw water access, conveying production arteries and veins enzyme bacterium solution connects outer immersed tube inner wall, opens and takes out
Water pump assembly and woven hose, using the head difference between interior immersed tube and outer immersed tube, in the soil body between interior immersed tube and outer immersed tube
Stable seepage field is formed, makes production arteries and veins enzyme bacterium solution to the ground diffusion around drilling, and be adsorbed on soil body particle；
Step 9：Outer immersed tube is connect into DC power supply cathode, interior immersed tube connects DC power supply anode；It is closed the switch of DC power supply,
DC electric field is formed between the woven hose of power cathode and the drinking-water pipe of power anode, after DC electric field acts on 4 ~ 8h, cut-out
The switch of DC power supply；DC electric field applies opportunity as in production arteries and veins enzyme bacterium attachment stage, negatively charged production arteries and veins enzyme bacterium is with electrophoresis
Form is moved to power anode, keeps the production arteries and veins enzyme bacterium for being enriched in proximal end at production arteries and veins enzyme bacterium solution injection remote at arteries and veins enzyme bacterium solution injection toward producing
The redistribution of production arteries and veins enzyme bacterium spatially is realized in end migration；
Step 10：DC power supply is cut off, after standing for 24 hours, the woven hose that conveying is reinforced to liquid accesses outer immersed tube inner wall, opens simultaneously
Draw water pump assembly and woven hose, using the head difference between interior immersed tube and outer immersed tube, the soil body between interior immersed tube and outer immersed tube
It is interior to form stable seepage field, make reinforcing liquid to the ground diffusion around drilling, and with the production arteries and veins that is adsorbed on soil body particle
Enzyme bacterium generates mineralising reaction, generates the calcium carbonate crystal with cementation；
Step 11：Outer immersed tube is connect into power cathode, interior immersed tube connects power anode；It is closed the switch of DC power supply, in power supply the moon
DC electric field is formed between the woven hose of pole and the drinking-water pipe of power anode, after DC electric field acts on 4 ~ 8h, cuts off direct current
The switch in source；It is to reinforce the liquid stage of reaction that DC electric field, which applies opportunity, and negatively charged reinforcing liquid is with electrophoretic type to power supply
Anode moves, and to make to be enriched in the reinforcing liquid for reinforcing proximal end at liquid injection toward distal migration at liquid injection is reinforced, realizes and reinforces
The redistribution of liquid spatially；
Step 12：Step 10 is repeated to step 11 up to soil stabilization to design strength；
Step 13：Concrete slurry stirring strength core is carried out in interior immersed tube to make；
Foundation pit is dug according to design first, then delivery pump continuously inculcates the good concrete slurry without passing through isolation of configuration, together
When blender be stirred, stirring number once to whitewash, once stirring or the second gunite triple mixing；When concrete slurry reaches
When to grout outlet, it should make slurries that an end be fully achieved, when mouth spray reaches stake top mark in stake base position pneumatically placed concrete slurries 30S
Gao Shi, blender stop being promoted, and are again stirring for the several seconds, the pile crown to ensure strength core stake is uniformly closely knit；
Step 14：After forming the compound strength core stake of microorganism, in the ground that the compound strength core stake of microorganism and inter-pile soil collectively form
Top is laid with permeability flexible sand bedding course, applies prefabricating load at the top of permeability flexible sand bedding course, makes the pore water edge in inter-pile soil
The drainage channel discharge that sand pile and permeability flexible sand bedding course are formed, inter-pile soil generates consolidation, improves the bearing capacity of inter-pile soil,
It is higher that the permeability flexible sand bedding course of weak soil and overlying after the compound strength core stake of microorganism, discharging consolidation just together forms bearing capacity
Compound strength core stake.
6. construction method as claimed in claim 5, which is characterized in that in the step 1, the stake bit interval of strength core stake is placed.
7. construction method as claimed in claim 5, which is characterized in that in the step 2, horizontal direction hole position is between any two
Interval error should not exceed 50mm, the interval error of vertical direction hole position between any two should not exceed 100mm；Hole bottom deflection
Size is not more than the 3% of design length；Hole depth is not less than design length, is also not more than the 1% of design length.
8. construction method as claimed in claim 5, which is characterized in that in the step 3, controlled and bored using clinograph
Hole direction, angular deflection are not more than 3 °, prevent the hole drilled out from deflection occur；When dry drilling, minor spiral machine drill hole is used.
9. construction method as claimed in claim 5, which is characterized in that it is described draw water pump assembly be dry vacuum pump assembly or
Jet stream pump assembly, the water header to draw water in pump assembly is the steel pipe that diameter is 75 ~ 150mm, between water header and interior immersed tube
Using flanged joint, the intensity of the DC electric field is 0.5 ~ 1.0V/cm.
10. construction method as claimed in claim 5, which is characterized in that the step 13 carries out concrete in interior immersed tube
When slurries stir the making of strength core, concrete slurry is higher than 0.5 meter of foundation ground；It, will when stopping delivering concrete slurries because of failure
Blender, which is sunk down into, to stop at slurry or less 0.5m, when waiting recovery for slurry, then is promoted, if downtime is more than 3h, it should cleaning pipe
Road prevents concrete slurry hardening from blocking pipeline, is conserved 14 days after concrete slurry implantation；The strength core stake reinforcement depth is little
In 20m, when using dry construction, strength core stake reinforcement depth is not more than 15m, and interior immersed tube diameter is not less than 500mm, outer immersed tube radius
Not less than 1000mm.
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN110761268A (en) * | 2019-11-27 | 2020-02-07 | 湖北毅力机械有限公司 | Construction method of deep foundation |
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| CN108396736B (en) | 2023-06-16 |
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