CN104878784A - Construction method for preventing preformed pile in mucky soil layer from moving horizontally - Google Patents
Construction method for preventing preformed pile in mucky soil layer from moving horizontally Download PDFInfo
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- CN104878784A CN104878784A CN201510270974.6A CN201510270974A CN104878784A CN 104878784 A CN104878784 A CN 104878784A CN 201510270974 A CN201510270974 A CN 201510270974A CN 104878784 A CN104878784 A CN 104878784A
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Abstract
The invention discloses a construction method for preventing a preformed pile in a mucky soil layer from moving horizontally. According to the method, a pile body is lengthened and is longer than mucky silty clay layers; the two ends of the pile body are fixed in the first silty clay layer and the second silty clay layer respectively, and the second silty clay layer is paved with miscellaneous fill. The construction method for preventing the preformed pile in the mucky soil layer from moving horizontally well resolves the problem that a pile body in a mucky soil layer inclines and moves, is easy to implement and good in control quality and well guarantees pile forming quality.
Description
Technical field
The present invention relates to a kind of construction method, be specially the construction method of the anti-horizontal shift of preformed pile in a kind of silt soil strata.
Background technology
Be positioned at the riparian area of the middle and lower reach of Yangtze River, features as poor geologic condition, underground has thickness to reach the silt soil strata of about 20 meters, and foundation ditch form is hole in hole, and ultra-deep part-9.0m, area is about 1000m
2.The stake top mark in this region is high in silt soil strata, and pile quality will be difficult to control, and the soil compaction effect of piling and the flowing effect of mucky soil, very easily cause the inclination of stake, displacement.In the case, conventionally design elevation is delivered in stake, pile quality cannot ensure at all, and may cause broken pile, useless stake, the difficulty of post-processed is larger.
By conventional method, stake is delivered to the technical problem of design elevation existence: mucky soil has larger mobility, along with the soil compaction effect of piling, mud produces flowing, pile body is applied to the power of horizontal direction, make pile body both sides by force unbalance, thus cause pile body run-off the straight, displacement, have a strong impact on pile quality, even cause useless stake.
Summary of the invention
The present invention proposes the construction method of the anti-horizontal shift of preformed pile in a kind of silt soil strata, according to silt depth, rationally pile joint is set, suitably increases stake long, to reach the object controlling pile foundation level displacement, thus ensure the pile quality of pile foundation, to solve the technical problem in background technology.
In order to solve the problems of the technologies described above, the invention provides following technical scheme:
The construction method of the anti-horizontal shift of preformed pile in a kind of silt soil strata, by pile body lengthen and length is greater than very soft sill clay layer, and be separately fixed at the two ends of described pile body with in the second silty clay layer in the first silty clay layer, and lay miscellaneous fill on the second farinose argillic horizon.
As a preferred technical solution of the present invention, described pile body bottom is provided with pile top and described pile top is inserted in the first farinose argillic horizon; Described pile body top is provided with lengthening stake and described lengthening stake is arranged in the second silty clay layer.
As a preferred technical solution of the present invention, the pile body that described pile body plays more than elevation line is all arranged in the second farinose argillic horizon.
Compared with prior art, the beneficial effect that the present invention has is: the present invention is the construction method of the anti-horizontal shift of preformed pile in a kind of silt soil strata, well solve the problem that silt soil strata pile tilts, is shifted, the method is simple to operate, Mass Control is good, well ensure that pile quality.
Accompanying drawing explanation
Accompanying drawing is used to provide a further understanding of the present invention, and forms a part for manual, together with embodiments of the present invention for explaining the present invention, is not construed as limiting the invention.In the accompanying drawings:
Fig. 1 is the construction method overall schematic of the anti-horizontal shift of preformed pile in a kind of silt soil strata described in the embodiment of the present invention;
In figure: 1, pile body; 2, pile top; 3, elevation line; 4, stake is lengthened; 5, the first farinose argillic horizon; 6, very soft sill clay layer; 7, the second farinose argillic horizon; 8, miscellaneous fill.
Detailed description of the invention
Below in conjunction with accompanying drawing, the preferred embodiments of the present invention are described, should be appreciated that preferred embodiment described herein is only for instruction and explanation of the present invention, is not intended to limit the present invention.
As shown in Figure 1, the construction method of the anti-horizontal shift of preformed pile in a kind of silt soil strata of the present invention, pile body 1 to be lengthened and length is greater than very soft sill clay layer 6, and be separately fixed at the two ends of described pile body 1 in first silty clay layer 5 and in the second silty clay layer 7, and lay miscellaneous fill 8 on the second farinose argillic horizon 7.
Described pile body 1 bottom is provided with pile top 2 and described pile top 2 is inserted in the first farinose argillic horizon 5; Described pile body 1 top is provided with lengthening stake 4 and described lengthening stake 4 is arranged in the second silty clay layer 7.
The pile body 1 of described pile body 1 elevation line more than 3 is all arranged in the second farinose argillic horizon 7.
The average thickness of each soil layer in foundation ditch ultra-deep region is calculated by Given information, growing and joining a scheme then according to each soil layer average thickness, test pile record and construction blueprint determination pile body 1, ensures that stake is risen and does not have above in the soil layer of mobility at very soft sill clay layer.Bearing capacity of single pile after lengthening according to geologic report checking computations pile body 1, then uses the side frictional resistance of pile driving pressure=design bearing capacity of pile foundation characteristic value × 2+ pile body elongated portion.Piling process adopts the piling scheme of pile driving pressure and the long dual control of stake, both ensure that the bearing capacity of pile foundation, and guaranteed stake withstands in the good soil layer of soil property.And after pile body 1 lengthening, pile body 1 side frictional resistance increases, and bearing capacity can increase, and stability also can increase.
The present invention is the construction method of the anti-horizontal shift of preformed pile in a kind of silt soil strata, and well solve the problem that silt soil strata pile tilts, is shifted, the method is simple to operate, Mass Control is good, well ensure that pile quality.
Last it is noted that the foregoing is only the preferred embodiments of the present invention, be not limited to the present invention, although with reference to previous embodiment to invention has been detailed description, for a person skilled in the art, it still can be modified to the technical scheme described in foregoing embodiments, or carries out equivalent replacement to wherein portion of techniques feature.Within the spirit and principles in the present invention all, any amendment done, equivalent replacement, improvement etc., all should be included within protection scope of the present invention.
Claims (3)
1. the construction method of the anti-horizontal shift of preformed pile in a silt soil strata, it is characterized in that, by pile body (1) lengthen and length is greater than very soft sill clay layer (6), and be separately fixed at the two ends of described pile body (1) in the first silty clay layer (5) and in the second silty clay layer (7), and lay miscellaneous fill (8) on the second farinose argillic horizon (7).
2. the construction method of the anti-horizontal shift of preformed pile in a kind of silt soil strata according to claim 1, it is characterized in that, described pile body (1) bottom is provided with pile top (2) and described pile top (2) is inserted in the first farinose argillic horizon (5); Described pile body (1) top is provided with lengthening stake (4) and described lengthening stake (4) is arranged in the second silty clay layer (7).
3. the construction method of the anti-horizontal shift of preformed pile in a kind of silt soil strata according to claim 2, it is characterized in that, the pile body (1) that described pile body (1) plays more than elevation line (3) is all arranged in the second farinose argillic horizon (7).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510270974.6A CN104878784B (en) | 2015-05-22 | 2015-05-22 | Construction method for preventing preformed pile in mucky soil layer from moving horizontally |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510270974.6A CN104878784B (en) | 2015-05-22 | 2015-05-22 | Construction method for preventing preformed pile in mucky soil layer from moving horizontally |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN104878784A true CN104878784A (en) | 2015-09-02 |
| CN104878784B CN104878784B (en) | 2017-05-10 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN201510270974.6A Active CN104878784B (en) | 2015-05-22 | 2015-05-22 | Construction method for preventing preformed pile in mucky soil layer from moving horizontally |
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Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH0427011A (en) * | 1990-05-22 | 1992-01-30 | Asahi Chem Ind Co Ltd | Installation of tip-expanded pile by inner excavation |
| CN1718937A (en) * | 2005-07-22 | 2006-01-11 | 苏州市能工基础工程有限责任公司 | Technology of non soil taking hole guiding prestressed pipe pile or premade square sunk pile |
| CN102011401A (en) * | 2010-09-09 | 2011-04-13 | 平煤建工集团有限公司 | High-intensity prestressed concrete tubular pile lead hole hammering construction method for soft soil layer |
| CN202298605U (en) * | 2011-08-31 | 2012-07-04 | 邹洁 | Cast-in-place concrete and sand filling compound pile |
| CN102900078A (en) * | 2011-07-26 | 2013-01-30 | 邹宗煊 | Anticorrosive preformed pile and manufacturing and constructing method thereof |
-
2015
- 2015-05-22 CN CN201510270974.6A patent/CN104878784B/en active Active
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH0427011A (en) * | 1990-05-22 | 1992-01-30 | Asahi Chem Ind Co Ltd | Installation of tip-expanded pile by inner excavation |
| CN1718937A (en) * | 2005-07-22 | 2006-01-11 | 苏州市能工基础工程有限责任公司 | Technology of non soil taking hole guiding prestressed pipe pile or premade square sunk pile |
| CN102011401A (en) * | 2010-09-09 | 2011-04-13 | 平煤建工集团有限公司 | High-intensity prestressed concrete tubular pile lead hole hammering construction method for soft soil layer |
| CN102900078A (en) * | 2011-07-26 | 2013-01-30 | 邹宗煊 | Anticorrosive preformed pile and manufacturing and constructing method thereof |
| CN202298605U (en) * | 2011-08-31 | 2012-07-04 | 邹洁 | Cast-in-place concrete and sand filling compound pile |
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| CN104878784B (en) | 2017-05-10 |
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