CN103741690B - A kind of soil plug compensates pile tube and extracts construction method and soil plug used compensation pile tube pile pulling device thereof - Google Patents
A kind of soil plug compensates pile tube and extracts construction method and soil plug used compensation pile tube pile pulling device thereof Download PDFInfo
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Abstract
A kind of soil plug that the present invention relates in Foundation Pit Support Engineering field compensates pile tube and extracts construction method and soil plug used compensation pile tube pile pulling device thereof, main operational principle utilizes static(al) pile pulling method, the stake circumferential stress one or more combination removed in pile pulling method and vibration pile pulling method is carried out hollow shell pill (1) and is extracted construction, utilize soil plug intensity to reduce method simultaneously, static pressure method, one or more combination in vibratory drilling method and hammering method is filled in (2) to soil and is applied pressure, inner soil plug (2) of pile tube (1) is not extracted with extracting of pile tube (1) in pile pulling process, pile pulling device comprises soil plug retention device (6), power set (5) and pile tube fastening devices (7) three part, what the present invention was specially adapted to steel pipe pile in bracing of foundation pit extracts construction, maximum contribution solves in the soil body, leave hole when pile tube is extracted and cause the difficult problems such as traction sedimentation, for last one obstacle has been cleared away in the application of steel pipe pile in bracing of foundation pit.
Description
Technical field
The present invention relates to the Foundation Pit Support Engineering field in field of civil engineering.
Background technology
Foundation Pit Support Engineering is one of important component part of geotechnical engineering, fender post (wall) form conventional at present mainly contains cement earth pile, diaphragm wall, steel sheet pile, the large class of SMW engineering method stake four that bored pile adds water proof, front two classes are wherein stake (wall) body based on steel concrete that cast in situs is formed, consumptive material, big energy-consuming, cost is higher, easily because site operation quality Control produces potential safety hazard.Steel wherein are generally extracted in steel sheet pile and the stake of SMW engineering method after having constructed, the main material of fender post (wall) can be recycled, therefore relative consumptive material, consume energy less, belong to fender post (wall) form of less expensive environmental protection, but the lap position between steel sheet pile cannot meet stricter water proof requirement, when foundation ditch digs darker, steel sheet pile often leaks seriously, in addition steel sheet pile rigidity is lower, thus limit it and apply, the stake of SMW engineering method is in order to solve the native water proof problem of gear, cement earth pile of need constructing between primary structure member (i.e. H profile steel) is gear soil also water proof locally, but when foundation ditch is darker, the stressed cracking of cement earth pile may cause water proof to lose efficacy, in addition cement-soil is not recyclable, there is certain material consumption, therefore cost is still higher.Bracing of foundation pit is the provisional engineering of a class, namely all use value of engineering are completed after pit backfill, therefore adopt callable prefabricated units (as bending resistance resist, antitorque, cut the good steel pipe of performance) carrying out going along with sb. to guard him can material-saving, energy-conservation, significantly reduce construction costs, and construction quality is easy to control, possesses vast potential for future development, I proposes the full bracing of foundation pit system reclaimed before this, and the fender post (wall) of the full bracing of foundation pit system reclaimed can adopt the making such as H profile steel, steel pipe, steel plate.If but because of the restriction of the problems such as pile pulling traction sedimentation, make fender post (wall) that the steel structure assemblings such as the H profile steel of cross-sectional openings can only be adopted to form, because there is the low determination of easily buckling of lateral stiffness in the steel work of cross-sectional openings, vibratory drilling method can only be adopted insertion construction is carried out when inserting construction, the Noise and vibration produced when constructing has a certain impact to surrounding enviroment, make it apply to be subject to certain restrictions, in addition, plug construction can produce a certain amount of traction sedimentation.And the steel work that the cross section that rigidity is large, bearing capacity is high is remained silent, as steel pipe etc., although its lateral stiffness is larger, the mode of static pressure can be adopted to carry out insertion construction, but in the soil body, leave larger hole when extracting, traction sedimentation and horizontal movement are very large, are the biggest obstacles of the application of steel pipe pile in bracing of foundation pit.
Summary of the invention
First object of the present invention is that providing a kind of soil plug to compensate pile tube extracts construction method.This soil plug compensates pile tube and extracts the hole stayed after construction method can eliminate pile pulling in the soil body, substantially eliminates the sedimentation of pile pulling traction, and can reduce pile pulling counter-force, considerably reduces prefabricated water proof pile foundation pit enclosure engineering cost.
This soil plug compensation pile tube is extracted construction method and is comprised the steps:
A) the soil plug position in the pile tube position that needs to extract and pile tube is determined;
B) pile tube to be extracted and pile pulling device are fixed;
C) utilize static(al) pile pulling method, the stake circumferential stress one or more combination removed in pile pulling method and vibration pile pulling method to carry out pile tube and extract construction, utilize the soil plug intensity one or more combination reduced in method, static pressure method, vibratory drilling method and hammering method to fill in soil simultaneously and apply pressure, the inner soil plug of pile tube is not extracted with extracting of pile tube in pile pulling process;
D) extract pile tube, and remove the connection between pile pulling device and the pile tube extracted;
E) step is repeated a) to steps d), carry out next root canal pile and extract construction, until constructed.
Compensating pile tube at above-mentioned soil plug extracts in construction method, at above-mentioned steps c) in, can in pile pulling work progress, by by the compression of soil plug and filling pile tube extract the hole stayed and reduce pile pulling to the impact of surrounding environment.
Compensating pile tube at above-mentioned soil plug extracts in construction method, at above-mentioned steps c) in, before pile pulling construction, one or both utilizing in paddling process and churning method combines, inner for pile tube to be pulled out soil plug intensity are significantly reduced or reduced native plug and the frictional force of pile tube inwall.
Extract in construction method, at above-mentioned steps c at above-mentioned soil plug compensation pile tube) in, before applying pressure to soil plug, the soil in pile tube hollow part beyond the Great Wall portion spreads back-up sand building stones as bed course.
Second object of the present invention is to provide native plug compensation pile tube to extract construction method one soil plug compensation pile tube pile pulling device used, and this soil plug compensation pile tube pile pulling device can complete soil plug compensation pile tube smoothly and extract construction, and structure is simple, and cost is low.
This soil plug compensates pile tube pile pulling device and comprises soil plug retention device, power set and pile tube fastening devices three part, soil plug retention device is wherein arranged in pile tube hollow part to be pressed in soil and can stop the structure that native plug moves on pile tube withdrawal process beyond the Great Wall, pile tube fastening devices is the utensil be firmly connected with pile tube, and power set are to provide pile pulling power or provide pile pulling power to hold concurrently provides the utensil of control to soil plug retention device.
Compensate in pile tube pile pulling device at above-mentioned soil plug, above-mentioned soil plug retention device can be positioned over one or both combinations in the column of pile tube hollow part or plate body, load transfer device.
Compensate in pile tube pile pulling device at above-mentioned soil plug, above-mentioned power set can be the one or more combinations in vibrating hammer, crane, assembly pulley, jack or oil cylinder.
A kind of soil plug of the present invention compensates pile tube and extracts construction method and soil plug used compensation pile tube pile pulling device thereof, what can realize pile tube smoothly extracts construction, the pile tube of to be specially adapted to cross section be closed curve or partial cross sectional to be closed curve or cross section be little open curve extracts construction, maximum contribution of the present invention solves in the soil body, leave hole when pile tube is extracted and cause the difficult problems such as traction sedimentation, for pile tube, particularly last one obstacle has been cleared away in the application of steel pipe pile in bracing of foundation pit.
Accompanying drawing explanation
Fig. 1 is one embodiment of the present of invention steel pipe pile vertical section to be pulled out schematic diagrames used;
Fig. 2 is one embodiment of the present of invention steel pipe pile cross sectional representation to be pulled out used;
Fig. 3 is that one embodiment of the present of invention the first vibration pile pulling method soil plug used compensates pile tube pile pulling device schematic diagram;
Fig. 4 is that one embodiment of the present of invention the second vibration pile pulling method soil plug used compensates pile tube pile pulling device schematic diagram;
Fig. 5 is that one embodiment of the present of invention the first static(al) pile pulling method soil plug used compensates pile tube pile pulling device schematic diagram;
Fig. 6 is that one embodiment of the present of invention the second static(al) pile pulling method soil plug used compensates pile tube pile pulling device schematic diagram;
Fig. 7 is that one embodiment of the present of invention the first vibration pile pulling method soil plug used compensates pile tube pile pulling device constructional drawing;
Fig. 8 is that one embodiment of the present of invention the second static(al) pile pulling method soil plug used compensates pile tube pile pulling device constructional drawing.
Detailed description of the invention
As an embodiment as shown in Figures 1 to 8 of the present invention, main purpose is to introduce soil plug and compensates that pile tube extracts the implementation step of construction method, working mechanism is filled in the structure compensating pile tube pile pulling device construct and operating principle with native.As shown in Figures 1 and 2, after pile tube (1) the insertion soil body has been constructed, because pile tube (1) is hollow tubular structures, in piling construction process, the part soil body can enter the hollow part of pile tube (1), forms soil plug (2) as shown in Figures 1 and 2.Pile tube (1) in the present embodiment can be the steel pipe pile of 800mm ~ 2000mm for diameter, wall thickness can be taken as 8mm ~ 25mm, can weld other components as required outside steel pipe pile, weldment is the junction plate component of prefabricated water proof stake in the present embodiment.Pile tube (1) in the present embodiment can also be the hollow pile body of other diameters and other cross sectional shapes.After piling construction completes, because of the difference of the diameter of pile sinking construction method, pile tube (1), wall thickness, cross sectional shape and soil layer condition, the upper surface position of the soil plug (2) after pile sinking completes in pile tube (1) is also by different.Before pile pulling, need the position of determining to treat tube drawing stake (1) to fill in (2) upper surface position with soil, thus complete the first step of the present embodiment.Enter second step.In this step, pile tube (1) and pile pulling device are fixed by main purpose.Fixing method can be various, in the present embodiment, have employed the sidewall weld connecting elements of pile tube (1) or by steel pipe clamp as pile tube fastening devices (7).By the mode such as to bore a hole on the sidewall of pile tube (1), pile tube (1) firmly can also be connected with power set (5) in this step.Thus complete the second step of the present embodiment, enter the 3rd step.In this step, first composition graphs 5 and Fig. 6 introduce employing two kinds of static(al) pile pulling methods.The first static(al) pile pulling method soil plug compensates pile pulling device schematic diagram as shown in Figure 5, first judge that can soil plug (2) bearing capacity in pile pulling process meet pile pulling needs, as do not met, then lay sand material (3) on the top of soil plug (2) as bed course, improve the bearing capacity of soil plug (2), retention device (6) is filled at the upper soil of placing of sand material (3), as met, then do not need to lay sand material (3), soil can be filled in retention device (6) and directly be positioned on soil plug (2).In Figure 5, soil plug retention device (6) is one piece of platy structure having enough rigidity and intensity, can adopt the steel plate of thickness 20 ~ 50mm, also can adopt column structure or rib of slab structure.Then, on the top of soil plug retention device (6), power set (5) are installed, pile tube fastening devices (7) are installed by temporary fixed for pile tube (1) on power set (5) top.Power set (5) can be one or more jack or oil cylinder (11).Promote pile tube fastening devices (7) pulls out to carry out pile pulling construction by power set (5); simultaneously by promoting soil plug retention device (6); make soil plug (2) not with pile tube (1) pulls out on pull out; when the thrust acting on soil plug (2) is greater than the frictional force between soil plug (2) and pile tube (1); soil plug (2) can compress the hole that also sold stowing pile pulling in time stays in pile pulling process; thus can reduce until eliminate the sedimentation of pile pulling traction and horizontal movement, protect the safety of surrounding enviroment and normally use.The structure of the similar ground tackle that the pile tube fastening devices (7) shown in Fig. 5 can be made up of wedge shape intermediate plate and mesa-shaped or cone also can be have with pile tube (1) other form of structure be fixedly connected with.The second static(al) pile pulling method soil plug compensates pile tube pile pulling device schematic diagram as shown in Figure 6, its constructional drawing as shown in Figure 8, has two aspects with the pile pulling device schematic diagram difference shown in Fig. 5: be that power set (5) are arranged at pile tube (1) outside with pile tube fastening devices (7) on the one hand; On the other hand, soil plug retention device (6) is one be positioned over the inner column of pile tube (1) or plate body (15) forms with the load transfer device (12) being positioned at pile tube (1) outside.Pile tube fastening devices (7) is made up of with intermediate plate (17) the ring-type intermediate plate constrainer (16) of built-in wedged hole, is realized the fixing of pile tube (1) by move up and down relative with intermediate plate constrainer (16) of intermediate plate (17) or is removed fixing.In this step with lower part, composition graphs 3 and Fig. 4, introduce two kinds of vibration pile pulling method soil plugs respectively and compensate pile tube pile-pulling construction method the 3rd step implementation methods and pile pulling device used and pile pulling process.The first pile tube pile pulling device comprises pile tube fastening devices (7), soil plug retention device (6) and power set (5), as shown in Figure 3.Wherein pile tube fastening devices (7) is a fixture that can fixedly secure pile tube (1) sidewall, soil plug retention device (6) is the column with the hollow part mating shapes of pile tube (1), in pile pulling process, do not affect soil to make the soil body extruded from the hole between soil plug retention device (6) and pile tube (1) inwall and fill in relative sliding between retention device (6) and pile tube (1), soil can being filled in retention device (6), to be made as bottom section large, the shape that cross section, middle part is little, as shown in Figure 3.Power set (5) shown in Fig. 3 can be made up of with vibrating hammer (10) crane (8) as shown in Figure 7, assembly pulley (9), can fill in position and the quantity of movable pulley, fixed pulley in thrust requirements configuration assembly pulley (9) of retention device (6) according to soil.Vibrating hammer (10) is fixed by pile tube fastening devices (7) and pile tube (1), the frictional resistance between the inner soil plug (2) of pile tube (1) sidewall and pile tube (1) the outside soil body and pile tube (1) is significantly reduced by the vibration of vibrating hammer (10), by crane (8) and assembly pulley (9), pile tube (1) is extracted, simultaneously utilize soil plug retention device (6) stop soil plug (2) in pile pulling process on move, can also according to pile pulling traction requirement of settlement control, soil plug retention device (6) thrust in pile pulling process is strengthened by arranging assembly pulley (9), soil plug (2) is utilized to supplement in time and the hole stayed in the soil body in sold stowing pile pulling process.Pile pulling device shown in Fig. 4 and pile pulling process similar to Fig. 3, following two aspects are mainly: be on the one hand that to fill in retention device (6) be one have the column structure of enough conducting oneself with dignity to soil with Fig. 3 difference, can with steel ingot or the making such as lead, concrete block, in vibration pile pulling process, the deadweight of being filled in retention device (6) by soil stops that native plug on (2) is moved; On the other hand, power set (5) are made up of crane (8) and vibrating hammer (10).In the 3rd step of the present embodiment, before pile pulling construction, the cement mixing method of the low cement parameter of construction in (2) can be filled at soil, before cement mixing method solidifies, soil plug (2) becomes flowable semisolid after agitation, in pile pulling process, between soil plug (2) and the inwall of pile tube (1), frictional force significantly reduces, the hole that the deadweight sold stowing pile pulling by soil plug (2) stays.Certainly, in this step, the high-pressure rotary jet grouting pile also can filling in the low cement parameter of construction in (2) at soil achieves the above object.In this step, can also be rushed by water, disturbance iso-stress release method reduces pile tube (1) and the peripheral soil body (4) and native frictional force of filling between (2), and then row pile pulling.In this step, in pile pulling work progress, can also carry out hammering construction to soil plug (2) stops native plug on (2) to be moved.In this step, the main distinction of constructing with conventional pile pulling be avoid in pile pulling process soil fill in (2) pull out with pile tube (1) upper and on move, where necessary, by compressing the hole that soil plug (2) sold stowing pile pulling in time stays, reducing or eliminating the impact of pile pulling traction.When this step is implemented, above-mentioned static(al) pile pulling method, the stake circumferential stress one or more combination removed in pile pulling method and vibration pile pulling method can be utilized to carry out pile tube and to extract construction, and utilize the one or more combination in (2) deadweight of soil plug, static pressure method, vibratory drilling method and hammering method to fill in (2) apply pressure to native as required, the soil plug (2) of pile tube (1) inside is not extracted with extracting of pile tube (1) in pile pulling process.Accordingly, soil plug retention device (6) can be positioned over the one or more combination in the column of pile tube (1) hollow part or plate body (15), load transfer device (12).Power set (5) can be the one or more combinations in vibrating hammer (10), crane (8), assembly pulley (9), jack or oil cylinder (11).Thus complete the present embodiment the 3rd step, enter the 4th step.In this step, after pile tube (1) is extracted, remove the connection between pile pulling device and the pile tube (1) extracted, that can carry out next root canal pile extracts construction, repeat the first step to the 4th step, complete pile pulling construction, thus the soil plug compensation pile tube completing we's invention extracts construction method.
This patent includes but not limited to other construction methods of the alternative use of professional person in this area.
Claims (7)
1. soil plug compensates pile tube and extracts a construction method, comprises the steps:
A) soil plug (2) position in pile tube (1) position that needs to extract and pile tube (1) is determined;
B) pile tube (1) to be extracted and pile pulling device are fixed;
C) static(al) pile pulling method is utilized, what stake circumferential stress removed that pile pulling method and the one or more combination in vibration pile pulling method carry out pile tube (1) extracts construction, utilize soil plug intensity to reduce method simultaneously, static pressure method, one or more combination in vibratory drilling method and hammering method is filled in (2) to soil and is applied pressure, the inner soil plug (2) of pile tube (1) is not extracted with extracting of pile tube (1) in pile pulling process, soil plug intensity wherein reduces method and refers to by the cement mixing method at the low cement mixing content of the middle construction of soil plug (2), high-pressure rotary jet grouting pile, water rushes, disturbance, make the method that between soil plug (2) and the inwall of pile tube (1), frictional force reduces, stake circumferential stress is wherein removed pile pulling method and is referred to and to be rushed by water, Disturbance stress release method reduces pile tube (1) and the peripheral soil body (4) and native frictional force of filling between (2), and then the method for row pile pulling,
D) extract pile tube (1), and remove the connection between pile pulling device and the pile tube (1) extracted;
E) step is repeated a) to steps d), carry out next root canal pile and extract construction, until constructed.
2. soil plug according to claim 1 compensates pile tube and extracts construction method, it is characterized in that at above-mentioned steps c) in, in pile pulling work progress, by by soil plug (2) compression and filling pile tube (1) extract the hole that stays and reduce pile pulling to the impact of surrounding environment.
3. soil plug according to claim 1 compensates pile tube and extracts construction method, it is characterized in that at above-mentioned steps c) in, before pile pulling construction, one or both utilizing in paddling process and churning method combine, and the intensity of inner for pile tube (1) to be pulled out soil plug (2) are significantly reduced or reduces the frictional force of soil plug (2) and pile tube (1) inwall.
4. soil plug according to claim 1 compensates pile tube and extracts construction method, it is characterized in that at above-mentioned steps c) in, before applying pressure to soil plug (2), soil plug (2) the top paving back-up sand building stones in pile tube (1) hollow part are as bed course.
5. a soil plug compensates pile tube and extracts construction method soil plug compensation pile tube pile pulling device used, it is characterized in that comprising soil plug retention device (6), power set (5) and pile tube fastening devices (7) three part, soil plug retention device (6) is wherein arranged in pile tube (1) hollow part to be pressed in soil plug (2) upper and can stop the native structure of filling in (2) and moving on pile tube (1) withdrawal process, pile tube fastening devices (7) is the utensil be firmly connected with pile tube (1), power set (5) are to provide pile pulling power or provide pile pulling power to hold concurrently provides the utensil of control to soil plug retention device (6).
6. soil plug according to claim 5 compensates pile tube pile pulling device, it is characterized in that soil plug retention device (6) is positioned over one or both combinations in the column of pile tube (1) hollow part or plate body (15), load transfer device (12).
7. soil plug according to claim 5 compensates pile tube pile pulling device, it is characterized in that power set (5) are the one or more combinations in vibrating hammer (10), crane (8), assembly pulley (9), jack or oil cylinder (11).
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| CN201410006538.3A CN103741690B (en) | 2014-01-07 | 2014-01-07 | A kind of soil plug compensates pile tube and extracts construction method and soil plug used compensation pile tube pile pulling device thereof |
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| CN201410006538.3A CN103741690B (en) | 2014-01-07 | 2014-01-07 | A kind of soil plug compensates pile tube and extracts construction method and soil plug used compensation pile tube pile pulling device thereof |
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Families Citing this family (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104594350A (en) * | 2015-02-09 | 2015-05-06 | 张继红 | Pore pressure counterforce steel pipe pile pulling method and pipe pulling device thereof |
| CN108951624A (en) * | 2018-09-06 | 2018-12-07 | 南京吉欧地下空间科技有限公司 | A kind of air bag pile pulling device and pile-pulling construction method |
| CN114164829B (en) * | 2021-12-14 | 2023-03-03 | 深圳中铁二局工程有限公司 | Process and device for rapidly pulling out underground precast pile |
| CN115613576A (en) * | 2022-12-19 | 2023-01-17 | 中国建筑第六工程局有限公司 | Device for pulling out temporary steel pipe pile on water and construction method thereof |
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| JPH0827791A (en) * | 1994-07-20 | 1996-01-30 | Taisei Corp | Removal method of existing steel pipe pile |
| CN101358452A (en) * | 2007-07-30 | 2009-02-04 | 王薇 | Construction method and construction equipment of total rotary rapid cutting barrier clearance and pile extracting |
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