CN103422489A - Pile-end tube composite foundation and construction method thereof - Google Patents
Pile-end tube composite foundation and construction method thereof Download PDFInfo
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- CN103422489A CN103422489A CN2012101492606A CN201210149260A CN103422489A CN 103422489 A CN103422489 A CN 103422489A CN 2012101492606 A CN2012101492606 A CN 2012101492606A CN 201210149260 A CN201210149260 A CN 201210149260A CN 103422489 A CN103422489 A CN 103422489A
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Abstract
The invention provides a pile-end tube composite foundation and a construction method thereof. The construction method includes hammering, punching or pressing a pile-end tube into a lower stratum, wherein the pile-end tube can be used individually or formed by connection of two or more tube bodies, or two or more tubes are used side by side, punning a soil pile, a lime-soil pile, a gravel cement pile, a no-slump concrete pile, a plain concrete pile, a CFG (cement fly-ash gravel) pile and the like on the upper portion of the tube to form the composite foundation together with an original foundation, and laying a manual bed course on the composite foundation. The construction method is applicable to narrow places, where large equipment cannot enter, with soft soil, gravel lenticle and the like, and to liquefied soil, quicksand, saturated loess and soft soil foundations with high groundwater levels. A part of upper load is borne by earth among piles, and the other part of the upper load is borne by piles and pile-end tubes. The pile-end tube composite foundation and the construction method thereof have the advantages that performance of materials can be fully utilized, construction cost is reduced, bearing capacity of the composite foundation is improved, and settlement and deformation of constructions can be controlled.
Description
Technical field:
The present invention relates to a kind of processing method of building composite foundation.
Background technology:
Because the method that composite foundation is processed at present is more, but its shortcoming is respectively arranged.No. 03117175.3 disclosed a kind of method for processing foundation of Chinese patent application, employing goes to upper and lower the end to end composite pile consisted of at least two pile cutofves, its use be preformed pile, there is reinforced concret precast pile, CFG, the rotary churning pile of through hole, the mutual combination of plain concrete stake on long axis direction.But for the weak soil that can't enter main equipment or the narrow place of sandstone lens ground is arranged again, can't implement.And use more general rotary churning pile cost higher, and inadequate in the place power supply capacity, in the situation without the blowdown condition, more be not suitable for again.In order to solve the processing problem of soft foundation, Chinese invention patent application number 02104259.4 discloses a kind of foundation reinforcement method, the method is that straight barrel type is inserted in soft foundation soil in modes such as vibration or punching static pressure, then gather materials on the spot, the filler of cement and water will be mixed and stirred, as sand material, slag, native aggregate chips or clay etc. drop in immersed tube in batches, with post hammer knocking compacting pile; Then more than the design elevation on stake top, with the filler tiling compacting of mixing and stirring cement and water, make the filler mattress layer, finally form the high caking ability pile composite foundation of cement.This method is actual is to allow cast-in-place pile body and filler mattress layer jointly form composite foundation, to overcome the shortcoming of single ground treating method.Because the pile body in said method is cast-in-place pile body, if the pile body of building is positioned under groundwater table, underground water also can seriously affect its pile quality, so the method is unwell to the place higher in above-mentioned groundwater table and adopts.
Summary of the invention:
The objective of the invention is is in order to overcome the shortcoming of existing several processing methods, adopts a kind of tubing of different size, different materials that utilizes under the pile bodies such as cement-soil, dirt, plain concrete, sandstone cement, no slump concrete, CFG to form the stake end jointly and the processing method of foundation soil form compound foundation.The method is not only applicable to narrow space, and the weak soil that can't enter main equipment has again the place of sandstone lens, is applicable to liquescency soil, quicksand, saturated loess and the soft foundation that groundwater level is high simultaneously yet.A upper load part is born by inter-pile soil, and another part is by stake and stake end tubing shared.
The technical measures that the present invention takes are, pre-pile hole in certain depth in need ground to be processed, hold the tubing hammering shake, squeeze into or be pressed in understratum stake, stake end tubing can be with being formed by connecting more than one or two and two, also available use side by side more than two and two, implement again rammed concrete pile, lime soil pile, sandstone concrete stake, no slump concrete stake, plain concrete pile, CFG stake etc. on stake end tubing top, with former foundation soil form compound foundation, the above re-lays artificial bed course jointly.Its form has: cement-soil-pipe of cement, dirt-pipe of cement, sandstone cement-pipe of cement, sand cement-Plastic Steel Pipe, sand cement-earthenware, sand cement-clad pipe, sandstone cement-pipe of cement-Plastic Steel Pipe, sand cement-earthenware-clad pipe-Plastic Steel Pipe etc.Construction control of the present invention is by stake being held the tubing hammering shake, squeeze into or be pressed in understratum; when implementing; tubing upper end or add damping rubber or damping device in the end at hammer; the top tube head of protection stake end tubing; according to the hammer vibrational energy, tamping energy or static pressure by tubing injection soil, with the bury bearing capacity of penetration control stake end and the deformation parameter of building lot of stake end tubing.Stake end tubing upper and lower end can be uncovered form, the hollow tube of also using the other materials identical or different with the material of tubing own to remain silent.The pile body on stake end tubing top can be selected according to no geological conditions.
Beneficial effect:
The invention has the beneficial effects as follows the mechanical property of giving full play to foundation soil by stake end tubing, the more shallow stratum for soil supporting layer, a stake end tubing bottom can be located at " bearing stratum ", to Deep Thick Soft Ground, can utilize the side friction of foundation soil to tubing.Can take full advantage of the performance of material, reduce construction costs, when improving Bearing Capacity of Composite Foundation, can also control the sedimentation and deformation of building.
The accompanying drawing explanation:
Fig. 1 is the schematic diagram of tubing composite foundation and job practices thereof in embodiment mono-, three.
Fig. 2 is the schematic diagram of tubing composite foundation and job practices thereof in embodiment bis-, three, five.
Fig. 3 is the schematic diagram of tubing composite foundation and job practices thereof in embodiment bis-, three, four.
Fig. 4 is the schematic diagram of tubing composite foundation and job practices thereof in embodiment bis-, three, six.
Fig. 5 is the schematic diagram of tubing composite foundation and job practices thereof in embodiment seven.
The specific embodiment:
Below in conjunction with several embodiment, the specific embodiment of the present invention is described:
Embodiment mono-:
As Fig. 1; stake end tubing composite foundation and job practices thereof be in the ground of first processing in wish pre-pile hole to water level (3); pipe of cement 5 hammerings are shaken, squeezed into or be pressed in understratum in (7); when implementing; add damping rubber or damping device in stake end tubing upper end or at the hammer end; the top tube head of protection stake end tubing, hold the bury bearing capacity of penetration control stake end and the deformation parameter of building lot of tubing (5) according to the size of vibrational energy, tamping energy or the static pressure hammered into shape with stake.Stake end tubing (5) lower end can be selected to enter in bearing stratum (9) according to the geological conditions in place, implements rammed concrete pile (2) in stake end tubing (5) upper end, after last bottom land compacting and lay bed course (1) compacting.
Embodiment bis-:
As Fig. 2, as shown in Figure 3, Figure 4, the present embodiment king-pile end tubing composite foundation and job practices thereof are similar to embodiment mono-, its difference is that stake end tubing (5) is with being formed by connecting more than two and two.
Embodiment tri-:
As shown in Figure 1, Figure 2, Figure 3, Figure 4, the present embodiment king-pile end tubing composite foundation and job practices thereof are similar to embodiment mono-, its difference is stake end tubing (5) with one or both and two or more tubing and the connection (6) between different composite tubing, concrete prefabricated pipe, cast tube, fire pipe, discard the connection between one or both and two or more tubing of pipe, clad pipe and chemical industry tubing.
Embodiment tetra-:
The present embodiment king-pile end tubing composite foundation and job practices thereof are similar to embodiment mono-, its difference is that stake is held the tubing lower end as shown in Figure 3, pipe end (8) is selected opening form, easily penetrate sandstone lens (4), enter understratum (7) and bearing stratum (9), effectively control the distortion of building.
Embodiment five:
The present embodiment king-pile end tubing composite foundation and job practices thereof are similar to embodiment mono-, its difference is that stake (a 2) material is rammed concrete pile, lime soil pile, sandstone concrete stake, no slump concrete stake, plain concrete pile, CFG stake etc. in upper implement (2) of stake end (5).
Embodiment six:
As shown in Figure 2, Figure 4 shows.The present embodiment king-pile end tubing composite foundation and job practices thereof are similar to embodiment mono-, and its difference is the hollow tube that the upper and lower two ends of stake end tubing (5) use material identical with tubing or other materials (8) to remain silent.Can improve bearing capacity of single pile, effectively control the distortion of building, as thicker as soil layer (7), under the condition that meets the building deformation requirement, can select stake end tubing (a 5) lower end not enter bearing stratum (9), be the bury bearing capacity of penetration control stake and the deformation parameter of building lot with tubing (5) according to the size of vibrational energy, tamping energy or the static pressure of hammer.
Embodiment seven:
As shown in Figure 5.The present embodiment king-pile end tubing composite foundation and job practices thereof are similar to embodiment mono-, and stake end tubing (5) is the connection of tubing arranged side by side more than two and two and tubing arranged side by side.
Claims (6)
1. he belongs to a kind of processing method of building composite foundation, it is characterized in that in need ground to be processed pre-pile hole in certain depth, hold the tubing hammering shake, squeeze into or be pressed in understratum stake, bearing capacity with the penetration control stake end that buries of stake end tubing, again at the top of stake end tubing construction rammed concrete, dirt, sandstone cement, no slump concrete or pour into plain concrete, CFG stake etc. and form pile bodies, with former foundation soil form compound foundation.
2. a kind of end tubing composite foundation as claimed in claim 1 and job practices thereof, is characterized in that stake end tubing can be with being formed by connecting more than one or two and two, and also available tubing more than two and two arranged side by side is formed by connecting.
3. a kind of end tubing composite foundation and job practices thereof as claimed in claim 1, one or more the tubing use in parallel that it is characterized in that the material of described stake end tubing can be concrete prefabricated pipe, cast tube, fires pipe, discarded pipe and steel pipe.
4. a kind of end tubing composite foundation as claimed in claim 1 and job practices thereof, is characterized in that described stake end tubing top pile body is divided into: rammed concrete pile, lime soil pile, sandstone concrete stake, no slump concrete stake, plain concrete pile, CFG stake etc.
5. a kind of end tubing composite foundation as claimed in claim 1 and job practices thereof, is characterized in that the upper and lower two ends of described tubing can have two kinds of form: a. to adopt opening form; B. the hollow tube that remain silent with the material of tubing own or other materials in upper and lower two ends.
6. hold tubing composite foundation and job practices thereof for a kind of as claimed in claim 1, it is characterized in that describedly holding the tubing hammering to shake, squeeze into stake or static(al) is pressed in understratum, according to vibrational energy, tamping energy or the static pressure of hammer, stake to be held in tubing injection soil, with the bury bearing capacity of penetration control stake end and the deformation parameter of building lot of stake end tubing.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
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| CN2012101492606A CN103422489A (en) | 2012-05-15 | 2012-05-15 | Pile-end tube composite foundation and construction method thereof |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2012101492606A CN103422489A (en) | 2012-05-15 | 2012-05-15 | Pile-end tube composite foundation and construction method thereof |
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| CN103422489A true CN103422489A (en) | 2013-12-04 |
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| CN2012101492606A Pending CN103422489A (en) | 2012-05-15 | 2012-05-15 | Pile-end tube composite foundation and construction method thereof |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110130385A (en) * | 2019-03-27 | 2019-08-16 | 河海大学 | A kind of combination caisson foundation and its construction method suitable for reinforced soft soil ground processing |
Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1424468A (en) * | 2003-01-21 | 2003-06-18 | 王继忠 | Constructive method for composite foundation |
| CN101294396A (en) * | 2008-06-13 | 2008-10-29 | 朱奎 | Different-stiffness composite pile composite foundation and processing method |
| CN101748720A (en) * | 2009-12-17 | 2010-06-23 | 王继忠 | Construction method of composite foundation |
| CN102071679A (en) * | 2010-12-29 | 2011-05-25 | 西安建筑科技大学 | Method for consolidating existing building foundation |
| CN102286971A (en) * | 2011-07-15 | 2011-12-21 | 中交水运规划设计院有限公司 | Concrete-filled steel tube core column socketed pile |
-
2012
- 2012-05-15 CN CN2012101492606A patent/CN103422489A/en active Pending
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1424468A (en) * | 2003-01-21 | 2003-06-18 | 王继忠 | Constructive method for composite foundation |
| CN101294396A (en) * | 2008-06-13 | 2008-10-29 | 朱奎 | Different-stiffness composite pile composite foundation and processing method |
| CN101748720A (en) * | 2009-12-17 | 2010-06-23 | 王继忠 | Construction method of composite foundation |
| CN102071679A (en) * | 2010-12-29 | 2011-05-25 | 西安建筑科技大学 | Method for consolidating existing building foundation |
| CN102286971A (en) * | 2011-07-15 | 2011-12-21 | 中交水运规划设计院有限公司 | Concrete-filled steel tube core column socketed pile |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110130385A (en) * | 2019-03-27 | 2019-08-16 | 河海大学 | A kind of combination caisson foundation and its construction method suitable for reinforced soft soil ground processing |
| CN110130385B (en) * | 2019-03-27 | 2021-07-20 | 河海大学 | Combined caisson foundation suitable for soft soil foundation reinforcement treatment and construction method thereof |
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Application publication date: 20131204 |