CN104631452A - Device for regulating and controlling contact and interaction between pile and earth - Google Patents
Device for regulating and controlling contact and interaction between pile and earth Download PDFInfo
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- CN104631452A CN104631452A CN201510020298.7A CN201510020298A CN104631452A CN 104631452 A CN104631452 A CN 104631452A CN 201510020298 A CN201510020298 A CN 201510020298A CN 104631452 A CN104631452 A CN 104631452A
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Abstract
The invention discloses a device for regulating and controlling contact and interaction between a pile and earth. The device comprises a negative pressure pump, a grouting pump and a pile body embedded in a selected region. The device is structurally characterized in that a main negative pressure pipeline and a main grouting pipeline are arranged in the pile body or on the surface of the pile body, wherein the main negative pressure pipeline is connected with the negative pressure pump, and the main grouting pipeline is connected with the grouting pump; the device is further provided with a plurality of branch negative pressure pipelines distributed at intervals and a plurality of branch grouting pipelines distributed at intervals, wherein the branch negative pressure pipelines are communicated with the main negative pressure pipeline, and the branch grouting pipelines are communicated with the main grouting pipeline; a valve can be arranged in each branch grouting pipeline, and a plug can be arranged in the main grouting pipeline; deformation sensors and stress sensors can be further arranged in the pile body, wherein the deformation sensors and the stress sensors are connected with a monitoring station. The device has the advantages that opening and closing of the contact surface between the pile and the earth can be flexibly controlled, the stress condition of the end of the pile can be effectively controlled, stress and deformation of the pile body can be flexibly adjusted, and the device can effectively cooperate with the pile and the earth to work together.
Description
Technical field
The present invention relates to piling Technology field, especially a kind of regulation and control stake soil contact and interactional device.
Background technology
In engineering practice, often run into the pile foundation in the grounds such as deep & thick silt, trip shale soil, recent fill, due to the compressive strain of settlement after construction or inter-pile soil, the soil body drives pile body to move downward, and generation pile foundation bears frictional resistance problem, causes pile body Load concentration; When problem is serious, pile foundation differential settlement can be caused, even the engineering safety accidents such as pile foundation inefficacy occur.
The technical scheme that current also shortage solves stake negative gene frictional resistance and transships, is usually after fracture, building inclination appear in pile body, just starts to process, take to set the method such as anchor pile, root pile to increase the quantity of pile foundation, the total bearing capacity on raising basis.Also some pile foundation engineerings are had, due to the negative frictional resistance of pile foundation cannot be avoided, in formation of pile, more than the neutral point of pile foundation, smear pitch in advance, intercept negative frictional resistance, because neutral point is a uncertain position, be difficult to accurately determine that pitch smears position, often do conservative process, thus it is long to increase stake, causes engineering to waste.
For the pile foundation of bearing Complicated Loads, as the pile foundation in the engineerings such as side slope, end of the bridge and harbour, pile body had both born vertical load, also bore horizontal loads, and lateral deformation and the moment of flexure of pile body are larger; Sometimes also pile foundation safety can be jeopardized because pile body produces excessive moment of flexure.Such situation often occurs, and the method for process is very limited, is by slope to reduce load mostly, first allows building deformation settle out, and then carries out the method such as high-pressure rotary-spray and reinforce pile peripheral earth, or sets up antislide pile, time-consuming and effort.
For temporary lining engineerings such as excavation slopes, a large amount of soldier pile, after Practical Completion, has stayed building periphery.These soldier pile costs are high, if can recycle, not only can economize on resources, can also reduce the destruction to environment.But reclaim at present pile foundation many employings lower sleeve, cut off the backward upper pile pulling of stake soil contact, easily like this cause pile pulling difficulty and poor efficiency because lower sleeve difficulty.
Summary of the invention
Technical problem to be solved by this invention be to provide a kind of unlatching that can control pile-soil interface flexibly with closed, effectively controls stake end stressing conditions, dexterous adjust pile body stressed and be out of shape, effective regulation and control stake of working in coordination with pile soil raft interaction is native contacts and interactional device.
The present invention's adopted technical scheme that solves the problem is: this device comprises negative pressure pump, grouting pump and is embedded in the pile body of selection area, its design feature is in pile body or the pile body surface of pile body is provided with main negative pressure line and main grouting pipeline, wherein main negative pressure line is connected with negative pressure pump, and main grouting pipeline is connected with grouting pump.
The present invention is also provided with some negative pressure line spaced apart and some grouting pipelines spaced apart, and a negative pressure line is connected with main negative pressure line, and a grouting pipeline is connected with main grouting pipeline.
The present invention can be provided with valve in each grouting pipeline, can be provided with embolism in main grouting pipeline.
The present invention also can be provided with the deformation-sensor and strain gauge that are connected with control and monitor console in pile body.
Of the present invention negative pressure line and a grouting pipeline extend to stake side and the stake end of pile body.
Can interval 2-4 rice between each negative pressure line of the present invention, can interval 2-4 rice between each grouting pipeline.
The present invention compared with prior art, there is following beneficial effect: this device arranges negative pressure line and grouting pipeline at pile body, by operation negative pressure line and grouting pipeline, the slip casting of flexible control stake side and stake end and negative-pressure ward, can realize that pile-soil interface opens and closes, the function such as adjustment, the jacking of stake end of stake lateral bending square and distortion, can be used for that pile foundation is optimized and revised, pile foundation reclaims, pile foundation Dynamic controlling, make pile foundation engineering safety controlled.
(1) this device can realize the contact of stake soil with interactional controlled, and reduce pile body negative friction, also can improve ultimate friction resistance, pile foundation is had can be handling; For the pile body bearing negative frictional resistance, control by this device, adjust the contact of stake soil, pile-soil interface is temporarily opened, the contact of stake Soil Interface is removed, and between stake soil, frictional resistance is eliminated, and the soil body is out of shape, release energy, after soil deformation is stable, closed stake Soil Interface, recovers the contact of stake Soil Interface, rebuild frictional resistance between stake soil, thus eliminate the impact of negative frictional resistance, make a side bear positive friction, thus the effect of pile foundation is given full play to;
(2) this device may be used for distortion fine setting and the Bending moment distribution adjustment of pile foundation, optimizes pile foundation service behaviour, improves the safety of pile foundation; For pile body deformation and moment of flexure problems of too, use this device to control, adjust the contact of stake soil, pile body deformation is adjusted to zone of reasonableness, moment of flexure is redistributed, shares other places, reduce tensile stress and concentrate, make pile foundation return to normal duty, instead of be in extreme working position;
(3) use this device, the process again setting sleeve can be saved in pile foundation removal process, improve success rate and the efficiency of pile foundation recovery; For the pile foundation needing to reclaim, in pile pulling process, controlled by this device, adjust the contact of stake soil, a side pile-soil interface is opened, removes pile side friction, the stake of jacking simultaneously end, jacking pile foundation, assists pile pulling, is beneficial to pulling out of pile foundation;
(4) this device can hold Shi Hanzhang from stake, reduces stake end decrement, strengthens pile foundation settlement ability of regulation and control, the utilization ratio of the load level that raising pile foundation is born and pile foundation supporting capacity; Hold jacking by stake, Shi Hanzhang can be held in stake, precompressed process is carried out to stake end, promote that pile-end soil body is closely knit, reduce the compressible amount of stake end; In pile composite foundation engineering, stake soil shares load jointly, and rational pile spacing should be that oil and pile reaches capacity load simultaneously; If the load that stake is shared is too small, the integrated carrying ability of pile composite foundation and the utilization ratio of pile foundation can be had influence on, now by this device from stake end to stake Shi Hanzhang with improve pile load load level.
Accompanying drawing explanation
Fig. 1 is layout plan of the present invention.
Fig. 2 is the A-A ' sectional drawing of Fig. 1.
Fig. 3 is the B-B ' sectional drawing of Fig. 1.
Fig. 4 is the C place enlarged drawing of Fig. 2.
Detailed description of the invention
See Fig. 1-Fig. 4, the present embodiment comprises negative pressure pump 2, grouting pump 3, control and monitor console 8 and is embedded in the pile body 1 of selection area, in pile body 1, be provided with main negative pressure line 4 and main grouting pipeline 5, wherein main negative pressure line 4 is connected with negative pressure pump 2, and main grouting pipeline 5 is connected with grouting pump 3.In addition, some negative pressure line 6 spaced apart and some grouting pipelines 7 spaced apart is also provided with in pile body 1, prop up negative pressure line 6 to be connected with main negative pressure line 4, prop up grouting pipeline 7 to be connected with main grouting pipeline 5, and a negative pressure line 6 and a grouting pipeline 7 extend to stake side and the stake end 9 of pile body 1, interval 2-4 rice between each negative pressure line 6, interval 2-4 rice between each grouting pipeline 7.
Can be provided with valve 10 in each grouting pipeline 7, valve 10 is pre-set before burying this device underground as required to be opened or closed, to control the direction of slip casting.Can be provided with embolism 11 in main grouting pipeline 5, embolism 11 is set in advance in differing heights as required before burying this device underground, to control the degree of depth of slip casting.Embolism 11 can adopt rubber stopper etc.
As required, the deformation-sensor 12 and strain gauge 13 that are connected with control and monitor console 8 also can be set in pile body 1.Deformation-sensor 12 and strain gauge 13 monitor the data in work progress automatically, and by the data monitored by data wire 14 or be manually uploaded to control and monitor console 8, make control and monitor console 8 can obtain the data such as negative pressure, grouting pressure, grouting amount in real time, and process monitored data in real time.Operator, according to Analysis on monitoring data result, controls flexibly slip casting and the negative-pressure ward of stake side and stake end 9, and to realize that pile-soil interface opens and closes, the adjustment of stake lateral bending square and distortion, stake hold the functions such as 9 jackings.If do not needed to obtain real time data, deformation-sensor 12, strain gauge 13 and control and monitor console 8 can not be set.
Main negative pressure line 4, main grouting pipeline 5, a negative pressure line 6 and a grouting pipeline 7 also can be arranged on the pile body surface of pile body 1.
Below the concrete operation step of each duty:
(A) stake side contacts face is opened
Before pre-buried device, open the valve 10 be arranged in each grouting pipeline 7.
Open grouting pump 3, slurries flow into each grouting pipeline 7 from main grouting pipeline 6, realize to the even slip casting of stake side surrounding, impel a Soil Interface to be separated, the frictional resistance of data feedback stake side to be monitored diminishes and even removes, then slip casting reaches interfacial separation requirement, close grouting pump 3, stop slip casting.
(B) stake side contacts face closes
Before pre-buried device, open the valve 10 be arranged in each grouting pipeline 7.
Open negative pressure pump 2, absorb stake Soil Interface bubble and super hole pressure; Open grouting pump 3 subsequently, slurries flow into each grouting pipeline 7 from main grouting pipeline 6, realize to the even slip casting of stake side surrounding, to the even slip casting of stake side surrounding, closed contact surface, improve pile side friction, the frictional resistance of data feedback stake side to be monitored recovers gradually, then slip casting reaches requirement, close grouting pump 3, carry out maintenance, maintenance expires, and closes negative pressure pump 2.
(C) adjustment of stake lateral bending square and distortion
Before pre-buried device, according to the distortion of stake side and moment of flexure monitored data, open the valve 10 in grouting pipeline 7 in certain direction, and in certain of main grouting pipeline 5, embolism 11 is highly set, to control direction and the degree of depth of slurries flowing.
Open grouting pump 3, slurries flow into a grouting pipeline 7 in certain direction from main grouting pipeline 6, and slurries can only flow to certain degree of depth, by the concentrated slip casting of certain direction, certain degree of depth, fine setting deflection, pile body is stressed to change, according to monitored data, and dynamic conditioning slip casting direction, pile foundation force and deformation is impelled to move towards rationally, data feedback pile foundation force and deformation to be monitored rationally, then closes grouting pump 3, stops slip casting.
(D) stake end jacking
Before pre-buried device, close the valve 10 that is arranged in each grouting pipeline 7, or main grouting pipeline 6 is only set, a grouting pipeline 7 is not set, slurries can only be flowed along main grouting pipeline 6.
Open grouting pump 3, slurries hold 9 slip castings along main grouting pipeline 6 to stake, make stake end 9 produce jacking, have installed jack as stake end 9, hold 9 bearing stratum counter-forces, produce jacking force to pile body 1 by stake; For pile pulling project, the liquid such as 9 priming petocks, mud can be held in stake; For the stake of Shi Hanzhang, negative pressure pump 2 need be opened, then open grouting pump 3 grout injection.
The realization of concrete function:
(1) this device can realize the contact of stake soil with interactional controlled, and reduce pile body negative friction, also can improve ultimate friction resistance, pile foundation is had can be handling; For the pile body bearing negative frictional resistance, control by this device, adjust the contact of stake soil, operation (A) step, pile-soil interface is temporarily opened, the contact of stake Soil Interface is removed, between stake soil, frictional resistance is eliminated, the soil body is out of shape, and releases energy, after soil deformation is stable, operation (B) step closes stake Soil Interface, recover the contact of stake Soil Interface, rebuild frictional resistance between stake soil, thus eliminate the impact of negative frictional resistance, make a side bear positive friction, thus the effect of pile foundation is given full play to.
(2) this device may be used for distortion fine setting and the Bending moment distribution adjustment of pile foundation, optimizes pile foundation service behaviour, improves the safety of pile foundation; For pile body deformation and moment of flexure problems of too, use this device to control, adjust the contact of stake soil, operation (C) step, pile body deformation is adjusted to zone of reasonableness, moment of flexure is redistributed, shares other places, reduce tensile stress and concentrate, make pile foundation return to normal duty, instead of be in extreme working position.
(3) this device can hold Shi Hanzhang from stake, reduces stake end decrement, strengthens pile foundation settlement ability of regulation and control, the utilization ratio of the load level that raising pile foundation is born and pile foundation supporting capacity; Operation (D) step, holds jacking by stake, can hold Shi Hanzhang in stake, carry out precompressed process to stake end, promotes that pile-end soil body is closely knit, reduces the compressible amount of stake end; In pile composite foundation engineering, stake soil shares load jointly, and rational pile spacing should be that oil and pile reaches capacity load simultaneously; If the load that stake is shared is too small, the integrated carrying ability of pile composite foundation and the utilization ratio of pile foundation can be had influence on, now by this device from stake end to stake Shi Hanzhang with improve pile load load level.
(4) use this device, the process again setting sleeve can be saved in pile foundation removal process, improve success rate and the efficiency of pile foundation recovery; For the pile foundation needing to reclaim, in pile pulling process, controlled by this device, adjust the contact of stake soil, operation (A) step, makes a side pile-soil interface open, remove pile side friction, operate (D) step, jacking stake end, jacking pile foundation simultaneously, auxiliary pile pulling, is beneficial to pulling out of pile foundation.
Claims (6)
1. a regulation and control stake soil contact and interactional device, comprise negative pressure pump (2), grouting pump (3) and be embedded in the pile body (1) of selection area, it is characterized in that: in pile body (1) or the pile body surface of pile body (1) be provided with main negative pressure line (4) and main grouting pipeline (5), wherein main negative pressure line (4) is connected with negative pressure pump (2), and main grouting pipeline (5) is connected with grouting pump (3).
2. regulation and control stake soil according to claim 1 contact and interactional device, it is characterized in that: be also provided with some negative pressure line (6) spaced apart and some grouting pipelines (7) spaced apart, and a negative pressure line (6) is connected with main negative pressure line (4), a grouting pipeline (7) is connected with main grouting pipeline (5).
3. regulation and control stake soil according to claim 2 contact and interactional device, it is characterized in that: valve (10) can be provided with in each grouting pipeline (7), embolism (11) can be provided with in main grouting pipeline (5).
4. regulation and control stake soil according to claim 1 contact and interactional device, is characterized in that: in pile body (1), also can be provided with the deformation-sensor (12) and strain gauge (13) that are connected with control and monitor console (8).
5. regulation and control stake soil according to claim 2 contact and interactional device, is characterized in that: a described negative pressure line (6) and a grouting pipeline (7) extend to stake side and the stake end (9) of pile body (1).
6. the contact of regulation and control stake according to claim 2 soil and interactional device, is characterized in that: can interval 2-4 rice between each described negative pressure line (6), can interval 2-4 rice between each grouting pipeline (7).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510020298.7A CN104631452A (en) | 2015-01-14 | 2015-01-14 | Device for regulating and controlling contact and interaction between pile and earth |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510020298.7A CN104631452A (en) | 2015-01-14 | 2015-01-14 | Device for regulating and controlling contact and interaction between pile and earth |
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| Publication Number | Publication Date |
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| CN104631452A true CN104631452A (en) | 2015-05-20 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN201510020298.7A Pending CN104631452A (en) | 2015-01-14 | 2015-01-14 | Device for regulating and controlling contact and interaction between pile and earth |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109113049A (en) * | 2018-08-28 | 2019-01-01 | 沙焕焕 | Prefabricated pile and its construction method is adjusted in stress deformation after work |
| CN109706984A (en) * | 2019-01-31 | 2019-05-03 | 沙焕焕 | The construction method for dredging long composite pile system based on measured data |
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| CN2459349Y (en) * | 2001-01-18 | 2001-11-14 | 北京市机械施工公司 | Pile end and pile side pressure grouting pipe |
| CN101333812A (en) * | 2008-08-04 | 2008-12-31 | 上海市基础工程公司 | Grouter for back side grouting and its construction method |
| CN201865096U (en) * | 2010-11-12 | 2011-06-15 | 上海市第二建筑有限公司 | Pressure regulating jet grouting device |
| JP2011157748A (en) * | 2010-02-02 | 2011-08-18 | Marugo Foundation Corp | Slime processing device |
| CN203320523U (en) * | 2013-07-16 | 2013-12-04 | 舟山市定海区巨洋技术开发有限公司 | Shallow sea wind power facility suction pile |
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2015
- 2015-01-14 CN CN201510020298.7A patent/CN104631452A/en active Pending
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN2459349Y (en) * | 2001-01-18 | 2001-11-14 | 北京市机械施工公司 | Pile end and pile side pressure grouting pipe |
| CN101333812A (en) * | 2008-08-04 | 2008-12-31 | 上海市基础工程公司 | Grouter for back side grouting and its construction method |
| JP2011157748A (en) * | 2010-02-02 | 2011-08-18 | Marugo Foundation Corp | Slime processing device |
| CN201865096U (en) * | 2010-11-12 | 2011-06-15 | 上海市第二建筑有限公司 | Pressure regulating jet grouting device |
| CN203320523U (en) * | 2013-07-16 | 2013-12-04 | 舟山市定海区巨洋技术开发有限公司 | Shallow sea wind power facility suction pile |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109113049A (en) * | 2018-08-28 | 2019-01-01 | 沙焕焕 | Prefabricated pile and its construction method is adjusted in stress deformation after work |
| CN109113049B (en) * | 2018-08-28 | 2020-11-10 | 沙焕焕 | Prefabricated pile with adjustable post-construction stress deformation and construction method thereof |
| CN109706984A (en) * | 2019-01-31 | 2019-05-03 | 沙焕焕 | The construction method for dredging long composite pile system based on measured data |
| CN109706984B (en) * | 2019-01-31 | 2020-11-10 | 沙焕焕 | Construction method of sparse-long composite pile system based on measured data |
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Application publication date: 20150520 |