CN101153490B - Bottom expanding and piling method by demolishing of pipe sank prefabricated steel concrete bottom expansion pile - Google Patents
Bottom expanding and piling method by demolishing of pipe sank prefabricated steel concrete bottom expansion pile Download PDFInfo
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- CN101153490B CN101153490B CN200710161498XA CN200710161498A CN101153490B CN 101153490 B CN101153490 B CN 101153490B CN 200710161498X A CN200710161498X A CN 200710161498XA CN 200710161498 A CN200710161498 A CN 200710161498A CN 101153490 B CN101153490 B CN 101153490B
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Abstract
The invention discloses a construction pile foundation engineering and application method, in particular relates to a blasting enlarging base and piling method for immersed tube preformed steel concrete under-reamed pile. A first section of an immersed tube is pressed into an earth body, a second section of the immersed tube is screwed onto the upper end of the first section of the immersed tube, and the immersed tube is pressed onto a design elevation hard pan; a metal pile head is taken out, emulsified oil or ammonium antimony explosive is put in through an immersed tube opening, and the immersed tube is unsealed after the explosive is blasted; an air soil suction device is used to take soil; radial reinforced bars are put into a base cavity together with pan soil, preset strong cement grout on the ground are poured into the base cavity through the immersed tube opening, gravel is then poured into the base cavity to form a sand-free concrete base, and a preset steel concrete body is put in and is in abutting anchoring joint with the concrete base made on spot; and finally the second section of the immersed tube is pull out before the first section of the immersed is pull out, and cement grout is then poured into the clearance left by the immersed tube to form the pile. The invention takes clear soil without granular void soil and with high efficiency.
Description
The application is that application number is: 200610047831.X, the applying date is: on September 21st, 2006, denomination of invention is: dividing an application of the end, piling method expanded in the explosion of pipe sinking prefabricated steel concrete club-footed pile.
Technical field
The end, piling method are expanded in the explosion that the present invention relates to a kind of building pile foundation engineering and job practices, particularly pipe sinking prefabricated steel concrete club-footed pile.
Background technology
The quality of well-known building foundation engineering quality plays crucial effects for the influence of structural quality, so each unit in charge of construction not only payes attention to the construction quality of superstructure, and more pays attention to the quality of Foundation Design.And drop into scientific research strength and tap the latent power to pile foundation engineering, make it in the utilization rate of guaranteeing to improve under the prerequisite of workmanship the strength of materials, calculate as can be known as passing through, the bearing capacity of pile tip of solid pile design has only utilized about 20% of strength of the mixing pile, for safety, each state has all stipulated safety factor, and the national regulation that has is 1.5, China is defined as 2, thereby the engineering quantity on the visible working drawing has half to set for security consideration.Occur in succession for the expanded bore pile that improves bearing capacity of single pile, composite foundation stake etc. for these reasons, although this bearing capacity of single pile than traditional foundation pile is significantly improved, but because traditional pile foundation engineering form of construction work is with manually bit by bit cutting the earth, fetch earth and dig pile body soil, and for prevent that landslide from digging next section of certain depth immersed tube downwards thereupon, when waiting to dig design elevation, the people is sling, expand the end with traditional bottom-expanding equipment again, and be positioned on the hardpan, hang out after the moulding and directly water the concrete pile after bottom-expanding equipment fetches earth.Thereby also there are following many shortcomings not fully up to expectations in visible traditional pile foundation construction and piling method:
1, the pile body part soil body is with manually diging up, and working face is too big, and the workload that fetches earth obviously increases, and efficient is low;
2, bottom-expanding equipment is not owing to there is immersed tube to do support, and the location is inaccurate, and the base expanded-angle is too little, and each parameter that expands in the end process can not guarantee, thereby makes the quality of stake be not easy control, and is difficult to reach designing requirement, causes the bearing capacity of single pile to be had a greatly reduced quality;
3, have constructor's potential safety hazard, the constructor does not note just being prone to accidents slightly;
4, the scope of application is narrow, not only is not suitable for the minor diameter pile body and expands the end, nor can be used for expanding the end and pile under precast pile and the high complicated geological situation;
5, the diffusing native sediment of graininess that expands in the end cavity is unclean clearly, and the serious harmful effect of bearing capacity generation to stake based on above-mentioned situation, for improving bearing capacity of single pile, reduces the Foundation Design cost, must be improved.
Summary of the invention
The present invention is directed to the problem that above-mentioned technology exists, all kinds of pile bodies that are applicable to various building safety grades, geological condition are provided, guarantee the pile foundation engineering quality, obviously improve bearing capacity of single pile, improve the strength of materials and utilization rate, make that stake is worked, the end, piling method are expanded in pipe sinking prefabricated steel concrete club-footed pile explosion safely and efficiently under the economical rationality state.
In order to solve the problems of the technologies described above, the present invention is achieved in that the explosion expansion end, the piling method of pipe sinking prefabricated steel concrete club-footed pile, a, the first segment immersed tube that will have a metal pile head are pressed in the soil body, with the second joint immersed tube and on the upper end of first segment immersed tube is threaded, immersed tube is depressed on the design elevation hardpan again; B, take out metal pile head, put into oil emulsion or tnt explosive from the immersed tube mouth, every 0.5m3 consumption is the 1-5 kilogram, seals the immersed tube mouth behind the ignition charge, treat that explosive charge is finished after, open the article of sealing the immersed tube mouth; C, inhale indigenous equipment with air and fetch earth, when only surplus a small amount of loosing during soil in the base, form the dead angle for having prevented the residual particles shape soil that looses, having piled up, this moment, soil was inhaled on pouring limit, limit from immersed tube mouth pouring, until blot clean till; D, radial reinforcing bar put into expand end cavity and hammer into pan soil, existing pour concrete forms base, puts into the precast reinforced concrete pile body and dock anchoring by its bottom joint bar with the Cast-in-place concrete base to be integral; E, earlier extract second the joint immersed tube, extract first segment immersed tube pile again.
The end, piling method are expanded in a kind of explosion of pipe sinking prefabricated steel concrete club-footed pile, and a, the whole immersed tube that will have a metal pile head pass weak soil and be laminated to the design elevation hardpan; B, taking-up metal pile head are put into oil emulsion or tnt explosive from the immersed tube mouth, every 0.5m
3Consumption is the 1-5 kilogram, seals the immersed tube mouth behind the ignition charge, treat that explosive charge is finished after, open the article of sealing the immersed tube mouth; C, inhale indigenous equipment with air and carry out second time soil taking, until soil is got clean till; D, usefulness have the video camera of light source and check in base cavity pocket whether its quality reaches designing requirement, and record by imaging is filed the correction in time of pinpointing the problems; E, radial reinforcing bar is put into base cavity pocket and hammered into pan soil, pour quantitative Cast-in-place concrete into from the immersed tube mouth and form the Cast-in-place concrete base, put into the joint bar of prestressing force precast hollow pile body by its bottom and dock anchoring with the Cast-in-place concrete base and be integral; F, extract the immersed tube pile.
The end, piling method are expanded in the explosion of pipe sinking prefabricated steel concrete club-footed pile, and a, the first segment immersed tube that will have a metal pile head are pressed in the soil body, with the second joint immersed tube and on the upper end of first segment immersed tube is threaded, immersed tube are depressed on the design elevation hardpan again; B, taking-up metal pile head are put into oil emulsion or tnt explosive from the immersed tube mouth, every 0.5m
3Consumption is the 1-5 kilogram, seals the immersed tube mouth behind the ignition charge, treat that explosive charge is finished after, open the article of sealing the immersed tube mouth; C, inhale indigenous equipment with air and fetch earth, clean up to fetching earth; D, radial reinforcing bar is put into base cavity pocket and hammered into pan soil, to make the concrete base in the base cavity by cast-in-place notes of immersed tube mouth at the good quantitative concrete of floor manufacture, and be lowered to the precast reinforced concrete pile body and dock anchoring with the Cast-in-place concrete base and be integral by its bottom joint bar; E, extract first segment immersed tube pile again after extracting the second joint immersed tube behind the grout injection of the immersed tube mouth outside.
The end, piling method are expanded in a kind of explosion of pipe sinking prefabricated steel concrete club-footed pile, and a, the whole immersed tube that will have a metal pile head pass weak soil and be laminated to the design elevation hardpan; B, taking-up metal pile head are put into oil emulsion or tnt explosive from the immersed tube mouth, every 0.5m
3Consumption is the 1-5 kilogram, seals the immersed tube mouth behind the ignition charge, treat that explosive charge is finished after, open the article of sealing the immersed tube mouth; C, inhale indigenous equipment with air and fetch earth, until fetch earth clean till; D, usefulness have the video camera of light source and check in base cavity pocket whether its quality reaches designing requirement, and record by imaging is filed the correction in time of pinpointing the problems; E, radial reinforcing bar is put into base cavity pocket and hammered into pan soil, pour quantitative Cast-in-place concrete into from the immersed tube mouth and form the Cast-in-place concrete base, put into the joint bar of prestressing force precast hollow pile body by its bottom and dock anchoring with the Cast-in-place concrete base and be integral; F, behind the inboard grout injection of immersed tube mouth, extract the immersed tube pile.
The end, piling method are expanded in the explosion of pipe sinking prefabricated steel concrete club-footed pile, and a, the first segment immersed tube that will have a metal pile head are pressed in the soil body, with the second joint immersed tube and on the upper end of first segment immersed tube is threaded, immersed tube are depressed on the design elevation hardpan again; B, taking-up metal pile head are put into oil emulsion or tnt explosive from the immersed tube mouth, every 0.5m
3Consumption is the 1-5 kilogram, seals the immersed tube mouth behind the ignition charge, treat that explosive charge is finished after, open the article of sealing the immersed tube mouth; C, inhale indigenous equipment with air and fetch earth, when only surplus a small amount of loosing during soil in the base, from immersed tube mouth pouring, pouring limit, limit sops up, and is clean up to fetching earth; D, radial reinforcing bar is put into base cavity pocket and hammered into pan soil, will be in the good concrete of floor manufacture be packed long bucket into, be put into the immersed tube bottom from the immersed tube mouth, when being located at the iron staff contact pan soil of bucket bottom, the bucket bottom door is backed down, concrete in it falls into base cavity pocket and forms cast-in-situ base, is lowered to the precast reinforced concrete pile body and docks anchoring by its bottom joint bar with the Cast-in-place concrete base to be integral; E, extract second joint earlier and go out first segment immersed tube pile again behind the immersed tube.
The end, piling method are expanded in a kind of explosion of pipe sinking prefabricated steel concrete club-footed pile, and a, the whole immersed tube that will have a metal pile head pass weak soil and be laminated to the design elevation hardpan; B, taking-up metal pile head are put into oil emulsion or tnt explosive from the immersed tube mouth, every 0.5m
3Consumption is the 1-5 kilogram, seals the immersed tube mouth behind the ignition charge, treat that explosive charge is finished after, open the article of sealing the immersed tube mouth; C, inhale indigenous equipment with air and fetch earth, until fetch earth clean till; D, usefulness have the video camera of light source and check in base cavity pocket whether its quality reaches designing requirement, and record by imaging is filed the correction in time of pinpointing the problems; E, radial reinforcing bar is put into base cavity pocket and hammered into pan soil, will be in the good quantitative concrete of floor manufacture be packed long bucket into, be put into the immersed tube bottom from the immersed tube mouth, when being located at the iron staff contact pan soil of bucket bottom, the bucket bottom door is backed down, concrete in it falls into base cavity pocket and forms cast-in-situ base, puts into the joint bar of prestressing force precast hollow pile body by its bottom and docks anchoring with the Cast-in-place concrete base and be integral; F, extract immersed tube, then along the slit grout injection pile of extracting behind the immersed tube.
The end, piling method are expanded in the explosion of pipe sinking prefabricated steel concrete club-footed pile, and a, the first segment immersed tube that will have a metal pile head are pressed in the soil body, with the second joint immersed tube and on the upper end of first segment immersed tube is threaded, immersed tube are depressed on the design elevation hardpan again; B, taking-up metal pile head are put into oil emulsion or tnt explosive from the immersed tube mouth, every 0.5m
3Consumption is the 1-5 kilogram, seals the immersed tube mouth behind the ignition charge, treat that explosive charge is finished after, open the article of sealing the immersed tube mouth; C, inhale indigenous equipment with air and fetch earth, when only surplus a small amount of loosing during soil in the base, from immersed tube mouth pouring, pouring limit, limit sops up, and is clean up to fetching earth; D, radial reinforcing bar is put into base cavity pocket and hammered into pan soil, will be in the good concrete of floor manufacture be packed long bucket into, be put into the immersed tube bottom from the immersed tube mouth, when being located at the iron staff contact pan soil of bucket bottom, the bucket bottom door is backed down, concrete in it falls into base cavity pocket and forms cast-in-situ base, is lowered to the precast reinforced concrete pile body and docks anchoring by its bottom joint bar with the Cast-in-place concrete base to be integral; E, go out first segment immersed tube pile again after extracting the second joint immersed tube behind the inboard grout injection of immersed tube mouth.
The end, piling method are expanded in a kind of explosion of pipe sinking prefabricated steel concrete club-footed pile, and a, the whole immersed tube that will have a metal pile head pass weak soil and be laminated to the design elevation hardpan; B, taking-up metal pile head are put into oil emulsion or tnt explosive from the immersed tube mouth, every 0.5m
3Consumption is the 1-5 kilogram, seals the immersed tube mouth behind the ignition charge, treat that explosive charge is finished after, open the article of sealing the immersed tube mouth; C, inhale indigenous equipment with air and fetch earth, until fetch earth clean till; D, usefulness have the video camera of light source and check in base cavity pocket whether its quality reaches designing requirement, and record by imaging is filed the correction in time of pinpointing the problems; E, radial reinforcing bar is put into base cavity pocket and hammered into pan soil, will be in the good concrete of floor manufacture be packed long bucket into, be put into the immersed tube bottom from the immersed tube mouth, when being located at the iron staff contact pan soil of bucket bottom, the bucket bottom door is backed down, concrete in it falls into base cavity pocket and forms cast-in-situ base, puts into the joint bar of prestressing force precast hollow pile body by its bottom and docks anchoring with the Cast-in-place concrete base and be integral; F, behind the inboard grout injection of immersed tube mouth, extract the immersed tube pile.
The end, piling method are expanded in the explosion of pipe sinking prefabricated steel concrete club-footed pile, and a, the first segment immersed tube that will have a metal pile head are pressed in the soil body, with the second joint immersed tube and on the upper end of first segment immersed tube is threaded, immersed tube are depressed on the design elevation hardpan again; B, taking-up metal pile head are put into oil emulsion or tnt explosive from the immersed tube mouth, every 0.5m
3Consumption is the 1-5 kilogram, seals the immersed tube mouth behind the ignition charge, treat that explosive charge is finished after, open the article of sealing the immersed tube mouth; C, inhale indigenous equipment with air and fetch earth, when only surplus a small amount of loosing during soil in the base, from immersed tube mouth pouring, pouring limit, limit sops up, and is clean up to fetching earth; D, radial reinforcing bar is put into base cavity pocket and hammered into pan soil, to pour in the base cavity pocket along the immersed tube mouth at the good thick cement paste of floor manufacture, again stone is poured into and made the sand concrete free base in the base cavity pocket, be lowered to the precast reinforced concrete pile body and dock anchoring with the Cast-in-place concrete base and be integral by its bottom joint bar; E, extract second joint earlier and extract the first segment immersed tube again behind the immersed tube, then along the slit grout injection pile of extracting behind the immersed tube.
The end, piling method are expanded in a kind of explosion of pipe sinking prefabricated steel concrete club-footed pile, and a, the whole immersed tube that will have a metal pile head are depressed into the design elevation hardpan; B, taking-up metal pile head are put into oil emulsion or tnt explosive from the immersed tube mouth, every 0.5m
3Consumption is the 1-5 kilogram, seals the immersed tube mouth behind the ignition charge, treat that explosive charge is finished after, open the article of sealing the immersed tube mouth; C, inhale indigenous equipment with air and fetch earth, until fetch earth clean till; D, usefulness have the video camera of light source and check in base cavity pocket whether its quality reaches designing requirement, and record by imaging is filed the correction in time of pinpointing the problems; E, radial reinforcing bar is put into base cavity pocket and hammered into pan soil, to pour in the base cavity pocket along the immersed tube mouth at the good thick cement paste of floor manufacture, again stone is poured into and made the sand concrete free base in the base cavity pocket, put into the joint bar of prestressing force precast hollow pile body by its bottom and dock anchoring with the Cast-in-place concrete base and be integral; F, extract immersed tube, then along the slit grout injection pile of extracting behind the immersed tube.
Advantage of the present invention and effect are as follows:
The present invention compared with prior art, do a series of technical measures such as wet mixing conjunction soil and precast pile owing to utilized immersed tube, air to inhale indigenous equipment with metal pile head, and the advanced production technology of employing, there is process simply advanced through evidence, clean no graininess loosened soil fetches earth, needn't get pile body chamber soil, the efficient height, the ratio range that expands bottom face diameter and pile body cross section is big, effectively improves bearing capacity of single pile, and reaches designing requirement, guarantee the pile foundation engineering quality, reduce building costs, improve strength of materials utilization rate, stake is worked under most economical state; The scope of application is wide simultaneously, adopt the pile body and corresponding base-enlarging method, the plant equipment that are complementary with it to replace manually-operated according to building safety grade and different geological conditions, not only improve operating efficiency, shortened the construction period, but also obviously reduced the earth volume of cutting the earth, improved working security, accident potential appears in minimizing.And adopt video camera to check in base cavity pocket whether its construction quality reaches designing requirement with light source, and record by imaging is filed, pinpoint the problems and in time correct, in time adjusting job practices and material therefor when promptly pinpointing the problems adopts remedial measures, construction quality is guaranteed, and the underground construction situation can be allowed the ground handling personnel in time grasp.The present invention is easy to realize.
Description of drawings
Fig. 1 is the main TV structure schematic diagram that air is inhaled indigenous equipment.
Among the figure, 1, soil sucking head; 2, flexible pipe; 3, contain the soil bucket; 4, soil-containing bucket cap; 5, power line; 6, inhale native passage; 7, battery; 8, bracing frame; 9, negative pressure source.
The specific embodiment
Equipment all at the bottom of the expansion of pipe sinking prefabricated steel concrete club-footed pile of the present invention, in the piling method are described in detail as follows its concrete structure below for inhaling indigenous equipment:
Air is inhaled indigenous equipment: master's TV structure schematic diagram of the present invention as shown in Figure 1, containing soil bucket 3 is through the welding processing moulding by steel plate, for making them under normal conditions can all hacks that are absorbed into from base of splendid attire, do the volume of containing the staving of soil bucket 3 enough big, contain the suction soil passage 6 that is provided with a rigid tubular in the soil bucket 3, the end that Sheng soil bucket 3 is passed in the lower end, link to each other with the upper end of flexible pipe 2, the lower end of flexible pipe 2 links to each other with soil sucking head 1, inhale native passage 6 upper ends and extend to the top of containing soil bucket 3, and fixed with at least one bracing frame 8, fall into smoothly in the Sheng soil bucket 3 for ease of the hack that sucks, inhale the upper end of native passage 6 and make the elbow shape, soil-containing bucket cap 4 spiral-locks are in the upper end of containing soil bucket 3 and keep airtight, the powerful negative pressure source of being located in the soil-containing bucket cap 49 has the structure similar to vacuum cleaner, battery 7 is connected with negative pressure source 9, and for negative pressure source 9 provides electric energy, battery 7 also is arranged in the soil-containing bucket cap 4.Negative pressure source 9 can also link to each other with power supply by the power line 5 that is wrapped on iron chains or the wire rope simultaneously.The suction side of described soil sucking head 1 is any one in rigid circular, elbow bend, in-line and the flat; Flexible pipe 2 be in flexible metal conduit and the bellows any one; Negative pressure source 9 also can link to each other with the inlet end of air compressor.When the present invention uses, the borrow equipment of slinging is put into immersed tube up to the bottom, when starting working soil sucking head 1 contact hack for last power supply negative pressure source 9, powerful air-flow passes through flexible pipe 2 with near the soil body rapidly, inhaling native passage 6 is inhaled in the Sheng soil bucket 3, equipment begins to promote repeatedly decline, be accompanied by and do 360 degree rotations back and forth, when pushing up ground, flexible pipe 2 can bending put in the base cavity pocket, soil sucking head 1 is done the circumference rolling during equipment rotation in base cavity pocket, unite use rear base hack repeatedly from described two kinds of actions and will be blotted only, for the very big base of base diameter, after sopping up most of soil body, water filling in the immersed tube sopped up mud then in the past.Powered-down hangs out borrow equipment after the exhaustion, outwells a barrel interior inhalation (inhalatio), prepares operation next time.
Embodiment one: the end, piling method are expanded in the explosion of pipe sinking prefabricated steel concrete club-footed pile, a, the first segment immersed tube that will have a metal pile head are pressed in the soil body, with the second joint immersed tube and on the upper end of first segment immersed tube is threaded, immersed tube is depressed on the design elevation hardpan again; B, taking-up metal pile head are put into oil emulsion or tnt explosive from the immersed tube mouth, every 0.5m
3Consumption is the 1-5 kilogram, seals the immersed tube mouth behind the ignition charge, treat that explosive charge is finished after, open the article of sealing the immersed tube mouth; C, inhale indigenous equipment with air and fetch earth, when only surplus a small amount of loosing during soil in the base, form the dead angle for having prevented the residual particles shape soil that looses, having piled up, this moment, soil was inhaled on pouring limit, limit from immersed tube mouth pouring, until blot clean till; D, radial reinforcing bar put into expand end cavity and hammer into pan soil, existing pour concrete forms base, puts into the precast reinforced concrete pile body and dock anchoring by its bottom joint bar with the Cast-in-place concrete base to be integral; E, earlier extract second the joint immersed tube, extract first segment immersed tube pile again.
Embodiment two: the end, piling method are expanded in a kind of explosion of pipe sinking prefabricated steel concrete club-footed pile, and a, the whole immersed tube that will have a metal pile head pass weak soil and be laminated to the design elevation hardpan; B, taking-up metal pile head are put into oil emulsion or tnt explosive from the immersed tube mouth, every 0.5m
3Consumption is the 1-5 kilogram, seals the immersed tube mouth behind the ignition charge, treat that explosive charge is finished after, open the article of sealing the immersed tube mouth; C, inhale indigenous equipment with air and carry out second time soil taking, until soil is got clean till; D, usefulness have the video camera of light source and check in base cavity pocket whether its quality reaches designing requirement, and record by imaging is filed the correction in time of pinpointing the problems; E, radial reinforcing bar is put into base cavity pocket and hammered into pan soil, pour quantitative Cast-in-place concrete into from the immersed tube mouth and form the Cast-in-place concrete base, put into the joint bar of prestressing force precast hollow pile body by its bottom and dock anchoring with the Cast-in-place concrete base and be integral; F, extract the immersed tube pile.
Embodiment three: the end, piling method are expanded in the explosion of pipe sinking prefabricated steel concrete club-footed pile, a, the first segment immersed tube that will have a metal pile head are pressed in the soil body, with the second joint immersed tube and on the upper end of first segment immersed tube is threaded, immersed tube is depressed on the design elevation hardpan again; B, taking-up metal pile head are put into oil emulsion or tnt explosive from the immersed tube mouth, every 0.5m
3Consumption is the 1-5 kilogram, seals the immersed tube mouth behind the ignition charge, treat that explosive charge is finished after, open the article of sealing the immersed tube mouth; C, inhale indigenous equipment with air and fetch earth, clean up to fetching earth; D, radial reinforcing bar is put into base cavity pocket and hammered into pan soil, to make the concrete base in the base cavity by cast-in-place notes of immersed tube mouth at the good quantitative concrete of floor manufacture, and be lowered to the precast reinforced concrete pile body and dock anchoring with the Cast-in-place concrete base and be integral by its bottom joint bar; E, extract first segment immersed tube pile again after extracting the second joint immersed tube behind the grout injection of the immersed tube mouth outside.
Embodiment four: the end, piling method are expanded in the explosion of pipe sinking prefabricated steel concrete club-footed pile, and a, the whole immersed tube that will have a metal pile head pass weak soil and be laminated to the design elevation hardpan; B, taking-up metal pile head are put into oil emulsion or tnt explosive from the immersed tube mouth, every 0.5m
3Consumption is the 1-5 kilogram, seals the immersed tube mouth behind the ignition charge, treat that explosive charge is finished after, open the article of sealing the immersed tube mouth; C, inhale indigenous equipment with air and fetch earth, until fetch earth clean till; D, usefulness have the video camera of light source and check in base cavity pocket whether its quality reaches designing requirement, and record by imaging is filed the correction in time of pinpointing the problems; E, radial reinforcing bar is put into base cavity pocket and hammered into pan soil, pour quantitative Cast-in-place concrete into from the immersed tube mouth and form the Cast-in-place concrete base, put into the joint bar of prestressing force precast hollow pile body by its bottom and dock anchoring with the Cast-in-place concrete base and be integral; F, behind the inboard grout injection of immersed tube mouth, extract the immersed tube pile.
Embodiment five: the end, piling method are expanded in the explosion of pipe sinking prefabricated steel concrete club-footed pile, a, the first segment immersed tube that will have a metal pile head are pressed in the soil body, with the second joint immersed tube and on the upper end of first segment immersed tube is threaded, immersed tube is depressed on the design elevation hardpan again; B, taking-up metal pile head are put into oil emulsion or tnt explosive from the immersed tube mouth, every 0.5m
3Consumption is the 1-5 kilogram, seals the immersed tube mouth behind the ignition charge, treat that explosive charge is finished after, open the article of sealing the immersed tube mouth; C, inhale indigenous equipment with air and fetch earth, when only surplus a small amount of loosing during soil in the base, from immersed tube mouth pouring, pouring limit, limit sops up, and is clean up to fetching earth; D, radial reinforcing bar is put into base cavity pocket and hammered into pan soil, will be in the good concrete of floor manufacture be packed long bucket into, be put into the immersed tube bottom from the immersed tube mouth, when being located at the iron staff contact pan soil of bucket bottom, the bucket bottom door is backed down, concrete in it falls into base cavity pocket and forms cast-in-situ base, is lowered to the precast reinforced concrete pile body and docks anchoring by its bottom joint bar with the Cast-in-place concrete base to be integral; E, extract second joint earlier and extract first segment immersed tube pile again behind the immersed tube.
Embodiment six: the end, piling method are expanded in the explosion of pipe sinking prefabricated steel concrete club-footed pile, and a, the whole immersed tube that will have a metal pile head pass weak soil and be laminated to the design elevation hardpan; B, taking-up metal pile head are put into oil emulsion or tnt explosive from the immersed tube mouth, every 0.5m
3Consumption is the 1-5 kilogram, seals the immersed tube mouth behind the ignition charge, treat that explosive charge is finished after, open the article of sealing the immersed tube mouth; C, inhale indigenous equipment with air and fetch earth, until fetch earth clean till; D, usefulness have the video camera of light source and check in base cavity pocket whether its quality reaches designing requirement, and record by imaging is filed the correction in time of pinpointing the problems; E, radial reinforcing bar is put into base cavity pocket and hammered into pan soil, will be in the good quantitative concrete of floor manufacture be packed long bucket into, be put into the immersed tube bottom from the immersed tube mouth, when being located at the iron staff contact pan soil of bucket bottom, the bucket bottom door is backed down, concrete in it falls into base cavity pocket and forms cast-in-situ base, puts into the joint bar of prestressing force precast hollow pile body by its bottom and docks anchoring with the Cast-in-place concrete base and be integral; F, extract immersed tube, then along the slit grout injection pile of extracting behind the immersed tube.
Embodiment seven: the end, piling method are expanded in the explosion of pipe sinking prefabricated steel concrete club-footed pile, a, the first segment immersed tube that will have a metal pile head are pressed in the soil body, with the second joint immersed tube and on the upper end of first segment immersed tube is threaded, immersed tube is depressed on the design elevation hardpan again; B, taking-up metal pile head are put into oil emulsion or tnt explosive from the immersed tube mouth, every 0.5m
3Consumption is the 1-5 kilogram, seals the immersed tube mouth behind the ignition charge, treat that explosive charge is finished after, open the article of sealing the immersed tube mouth; C, inhale indigenous equipment with air and fetch earth, when only surplus a small amount of loosing during soil in the base, from immersed tube mouth pouring, pouring limit, limit sops up, and is clean up to fetching earth; D, radial reinforcing bar is put into base cavity pocket and hammered into pan soil, will be in the good concrete of floor manufacture be packed long bucket into, be put into the immersed tube bottom from the immersed tube mouth, when being located at the iron staff contact pan soil of bucket bottom, the bucket bottom door is backed down, concrete in it falls into base cavity pocket and forms cast-in-situ base, is lowered to the precast reinforced concrete pile body and docks anchoring by its bottom joint bar with the Cast-in-place concrete base to be integral; E, extract first segment immersed tube pile again after extracting the second joint immersed tube behind the inboard grout injection of immersed tube mouth.
Embodiment eight: the end, piling method are expanded in a kind of explosion of pipe sinking prefabricated steel concrete club-footed pile, and a, the whole immersed tube that will have a metal pile head pass weak soil and be laminated to the design elevation hardpan; B, taking-up metal pile head are put into oil emulsion or tnt explosive from the immersed tube mouth, every 0.5m
3Consumption is the 1-5 kilogram, seals the immersed tube mouth behind the ignition charge, treat that explosive charge is finished after, open the article of sealing the immersed tube mouth; C, inhale indigenous equipment with air and fetch earth, until fetch earth clean till; D, usefulness have the video camera of light source and check in base cavity pocket whether its quality reaches designing requirement, and record by imaging is filed the correction in time of pinpointing the problems; E, radial reinforcing bar is put into base cavity pocket and hammered into pan soil, will be in the good concrete of floor manufacture be packed long bucket into, be put into the immersed tube bottom from the immersed tube mouth, when being located at the iron staff contact pan soil of bucket bottom, the bucket bottom door is backed down, concrete in it falls into base cavity pocket and forms cast-in-situ base, puts into the joint bar of prestressing force precast hollow pile body by its bottom and docks anchoring with the Cast-in-place concrete base and be integral; F, behind the inboard grout injection of immersed tube mouth, extract the immersed tube pile.
Embodiment nine: the end, piling method are expanded in the explosion of pipe sinking prefabricated steel concrete club-footed pile, a, the first segment immersed tube that will have a metal pile head are pressed in the soil body, with the second joint immersed tube and on the upper end of first segment immersed tube is threaded, immersed tube is depressed on the design elevation hardpan again; B, taking-up metal pile head are put into oil emulsion or tnt explosive from the immersed tube mouth, every 0.5m
3Consumption is the 1-5 kilogram, seals the immersed tube mouth behind the ignition charge, treat that explosive charge is finished after, open the article of sealing the immersed tube mouth; C, inhale indigenous equipment with air and fetch earth, when only surplus a small amount of loosing during soil in the base, from immersed tube mouth pouring, pouring limit, limit sops up, and is clean up to fetching earth; D, radial reinforcing bar is put into base cavity pocket and hammered into pan soil, to pour in the base cavity pocket along the immersed tube mouth at the good thick cement paste of floor manufacture, again stone is poured into and made the sand concrete free base in the base cavity pocket, be lowered to the precast reinforced concrete pile body and dock anchoring with the Cast-in-place concrete base and be integral by its bottom joint bar; E, extract second joint earlier and go out the first segment immersed tube again behind the immersed tube, then along the slit grout injection pile of extracting behind the immersed tube.
Embodiment ten: the end, piling method are expanded in the explosion of pipe sinking prefabricated steel concrete club-footed pile, and a, the whole immersed tube that will have a metal pile head are depressed into the design elevation hardpan; B, taking-up metal pile head are put into oil emulsion or tnt explosive from the immersed tube mouth, every 0.5m
3Consumption is the 1-5 kilogram, seals the immersed tube mouth behind the ignition charge, treat that explosive charge is finished after, open the article of sealing the immersed tube mouth; C, inhale indigenous equipment with air and fetch earth, until fetch earth clean till; D, usefulness have the video camera of light source and check in base cavity pocket whether its quality reaches designing requirement, and record by imaging is filed the correction in time of pinpointing the problems; E, radial reinforcing bar is put into base cavity pocket and hammered into pan soil, to pour in the base cavity pocket along the immersed tube mouth at the good thick cement paste of floor manufacture, again stone is poured into and made the sand concrete free base in the base cavity pocket, put into the joint bar of prestressing force precast hollow pile body by its bottom and dock anchoring with the Cast-in-place concrete base and be integral; F, extract immersed tube, then along the slit grout injection pile of extracting behind the immersed tube.
The article of sealing the immersed tube mouth described in the embodiment one to ten are article such as iron plate.
Method of the present invention can be built according to different safety class, geological condition and adopt pile body and the base-enlarging method that is complementary with it, the scope of application is wide, in addition by the video camera imaging inspection record, make and cannot see impalpable construction quality and can intuitively see, and the quality problems of existence can in time be corrected, and then guarantee that workmanship reaches designing requirement, under the prerequisite of guaranteeing quality, reduce safety factor, improving strength of materials utilization rate provides foundation.
Claims (1)
1. the end, piling method are expanded in the explosion of pipe sinking prefabricated steel concrete club-footed pile, and a, the first segment immersed tube that will have a metal pile head are pressed in the soil body, with the second joint immersed tube and on the upper end of first segment immersed tube is threaded, immersed tube are depressed on the design elevation hardpan again; B, taking-up metal pile head are put into oil emulsion or tnt explosive from the immersed tube mouth, every 0.5m
3Consumption is the 1-5 kilogram, seals the immersed tube mouth behind the ignition charge, treat that explosive charge is finished after, open the article of sealing the immersed tube mouth; C, inhale indigenous equipment with air and fetch earth, when only surplus a small amount of loosing during soil in the base, from immersed tube mouth pouring, pouring limit, limit sops up, and is clean up to fetching earth; D, radial reinforcing bar is put into base cavity pocket and hammered into pan soil, to pour in the base cavity pocket along the immersed tube mouth at the good thick cement paste of floor manufacture, again stone is poured into and made the sand concrete free base in the base cavity pocket, be lowered to the precast reinforced concrete pile body and dock anchoring with the Cast-in-place concrete base and be integral by its bottom joint bar; E, extract second joint earlier and go out the first segment immersed tube again behind the immersed tube, then along the slit grout injection pile of extracting behind the immersed tube.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN200710161498XA CN101153490B (en) | 2006-09-21 | 2006-09-21 | Bottom expanding and piling method by demolishing of pipe sank prefabricated steel concrete bottom expansion pile |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN200710161498XA CN101153490B (en) | 2006-09-21 | 2006-09-21 | Bottom expanding and piling method by demolishing of pipe sank prefabricated steel concrete bottom expansion pile |
Related Parent Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 200610047831 Division CN1920182A (en) | 2006-09-21 | 2006-09-21 | Blast pedestal and piling method for pipe sinking prefabricated steel concrete club-footed pile |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN101153490A CN101153490A (en) | 2008-04-02 |
| CN101153490B true CN101153490B (en) | 2010-06-23 |
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| CN200710161498XA Expired - Fee Related CN101153490B (en) | 2006-09-21 | 2006-09-21 | Bottom expanding and piling method by demolishing of pipe sank prefabricated steel concrete bottom expansion pile |
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Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1113530A (en) * | 1995-01-05 | 1995-12-20 | 王守彬 | Construction method of foundation piles on soft stratum |
| CN1187559A (en) * | 1996-08-28 | 1998-07-15 | 王国奋 | Pipe sinking prefabricated steel concrete club-footed pile and its pile making method and equipment |
| CN1749484A (en) * | 2005-10-17 | 2006-03-22 | 卫龙武 | Construction method for prefabricated tubular pile with expanding head |
| CN1804243A (en) * | 2006-01-20 | 2006-07-19 | 王国奋 | Soil taking apparatus for immersed tube prefabricated steel concrete under-reamed pile |
-
2006
- 2006-09-21 CN CN200710161498XA patent/CN101153490B/en not_active Expired - Fee Related
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1113530A (en) * | 1995-01-05 | 1995-12-20 | 王守彬 | Construction method of foundation piles on soft stratum |
| CN1187559A (en) * | 1996-08-28 | 1998-07-15 | 王国奋 | Pipe sinking prefabricated steel concrete club-footed pile and its pile making method and equipment |
| CN1749484A (en) * | 2005-10-17 | 2006-03-22 | 卫龙武 | Construction method for prefabricated tubular pile with expanding head |
| CN1804243A (en) * | 2006-01-20 | 2006-07-19 | 王国奋 | Soil taking apparatus for immersed tube prefabricated steel concrete under-reamed pile |
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