CN102817353A - Composite soft clay foundation - Google Patents
Composite soft clay foundation Download PDFInfo
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- CN102817353A CN102817353A CN2012102765206A CN201210276520A CN102817353A CN 102817353 A CN102817353 A CN 102817353A CN 2012102765206 A CN2012102765206 A CN 2012102765206A CN 201210276520 A CN201210276520 A CN 201210276520A CN 102817353 A CN102817353 A CN 102817353A
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Abstract
The invention discloses a composite soft clay foundation, which comprises a soft clay foundation body and a plurality of sand gravel pile bodies, wherein the sand gravel pile bodies are respectively stood in the soft clay foundation body at intervals; a permeable pile body extending along a length direction of each sand gravel pile body is vertically arranged in each sand gravel pile body; and each permeable pile body is a permeable bag body filled with water-absorbable and swellable fillers capable of absorbing moisture and swelling. The composite soft clay foundation has the beneficial effects that the permeable pile bodies, the sand gravel pile bodies and soft clay between the piles can commonly bear vertical load, and transmits the vertical load to a hard pan under the soft clay foundation body, so that the bearing capacity and the shear-bearing capacity of the whole foundation are improved; and simultaneously, due to the water-absorbable and swellable characteristics of the water-absorbable and swellable fillers in the permeable pile bodies, the soft clay between the piles can be compacted, so that the whole strength of the soft clay foundation is greatly improved, the defect that the improvement of the strength of the soft clay foundation is limited in a traditional sand gravel pile processing method is overcome, the drainage consolidation speed is accelerated, and the residual settlement is completed ahead of schedule.
Description
Technical field
The present invention relates to field of civil engineering, particularly a kind of soft clay foundation.
Background technology
Measures for Making Ground and Foundation is crucial in architecture, and whether firmly the superstructure ground has or not alternative effect.At present, China has introduced many method for processing foundation from external, and like cushion, preloading, dynamic compaction, vibroflotation method, deep mixing method, sand-gravel pile method, soil or lime-soil compaction pile method, these processing methods can make the ground comparatively robust.
Wherein, the sand-gravel pile method is the most common processing method of soft clay foundation, and the sand-gravel pile method is exactly under the vibration effect of bobbing machine; Sleeve is squeezed into the projected depth of regulation, after ramming pipe and burying, and compacted sleeve pipe surrounding soil; Drop into sandstone then; Sediment outflow stone is in soil again, and the vibratory compaction pile repeatedly just becomes sand-gravel pile after the circulation.This sand-gravel pile is when handling soft clay foundation; The sand-gravel pile of one determining deviation and bury can constitute the bury composite foundation jointly; Prose style free from parallelism sandstone in this bury composite foundation relies on the hoop effect pile of stake week soil to bear vertical load; It is fixed with the completion residual settlement that bury relies on the drainage of sand-gravel pile to accelerate, thereby improve the stability of soft clay foundation.But traditional sand-gravel pile processing method has the raising of soft clay ground rheobase limited, the shortcoming that discharging consolidation speed is relatively slow, and therefore traditional sand-gravel pile has certain limitation and weak point to the processing of soft clay foundation.
In view of this, the inventor furthers investigate to the defective that traditional sand-gravel pile method is handled soft clay foundation, is then produced by this case.
Summary of the invention
The purpose of this invention is to provide a kind of compound soft clay foundation, intensity that it can overcome traditional sand-gravel pile when soft clay foundation is handled improves limited, the slow-footed shortcoming of discharging consolidation.
Technical scheme of the present invention is such: a kind of compound soft clay foundation; Comprise soft clay ground element body and some sand-gravel pile bodies; Each sand-gravel pile body is erected in the soft clay ground element body respectively at interval; Erectting in the above-mentioned sand-gravel pile body has the permeable pile body that extends along the length direction of above-mentioned sand-gravel pile body, and above-mentioned permeable pile body is for being filled with the permeable bag of the imbibition property filler that can absorb moisture and expand in it.
Above-mentioned imbibition property filler is a lime mix filler.
Above-mentioned lime mix filler is main by a kind of mixture that evenly mixes in quicklime and flyash, pozzolan, slag, slag and the cohesive soil.
Above-mentioned lime mix filler is for mainly by a kind of in quicklime and flyash, pozzolan, slag, slag and the cohesive soil and mixture that low amounts of water evenly mixes.
The wall thickness of above-mentioned sand-gravel pile body is not less than 20cm.
Above-mentioned permeable bag is permeable geotechnique's bag.
Be equipped with the sandstone mattress layer on the contacted contact surface of above-mentioned soft clay ground element body and superstructure.
The thickness of above-mentioned sandstone mattress layer is 40～60cm.
After adopting technique scheme; A kind of compound soft clay foundation of the present invention; Extend the permeable pile body that is provided with owing to erect the length direction that has along the sand-gravel pile body in the sand-gravel pile body; Utilize like this this permeable pile body can and sand-gravel pile body and stake between bury bear vertical load jointly and it be passed to the hardpan of soft clay ground element body below, thereby improved whole bearing capacity and the shear resistance of ground; Simultaneously; Permeable pile body is for being filled with the permeable bag of the imbibition property filler that can absorb moisture and expand in it; Then the moisture in the bury can be in the sand-gravel pile body infiltrates into permeable pile body smoothly between the stake, and is absorbed by imbibition property filler, but this moment, imbibition property filler expanded bury between compaction pile; Thereby improve the bulk strength of soft clay foundation greatly; Overcome traditional sand-gravel pile processing method the soft clay ground rheobase is improved limited defective, and accelerated discharging consolidation speed, fulfil residual settlement ahead of schedule.Because imbibition property filler is a lime mix filler; And the lime in the lime mix filler can with water generation chemical reaction; In chemical reaction process, can the heat release dehydration can make the ultra hydrostatic pressing quilt dissipation rapidly in the bury between stake; Thereby the intensity of bury between stake is improved rapidly, and then the bulk strength of soft clay foundation is improved again.Again owing to be equipped with the sandstone mattress layer on soft clay ground element body and the contacted contact surface of superstructure; This sandstone mattress layer can form a good horizontal drainage channel; Cooperating through sandstone mattress layer and sand-gravel pile body like this; Make soft clay foundation have horizontal drainage passage and vertical drainage passage, thereby can further accelerate the discharging consolidation speed of soft clay foundation.
Description of drawings
Fig. 1 is a structural representation of the present invention;
Fig. 2 is the structural representation of sand-gravel pile body among the present invention and permeable pile body.
Among the figure:
Soft clay ground element body 1 sand-gravel pile body 2
Permeable pile body 3 superstructures 4
Sandstone mattress layer 5
The specific embodiment
A kind of compound soft clay foundation of the present invention; Comprise soft clay ground element body 1 and some sand-gravel pile bodies 2; This soft clay ground element body 1 is deep saturated soft clay ground; Each sand-gravel pile body 2 is erected in the soft clay ground element body 1 respectively at interval; And the wall thickness of each sand-gravel pile body 2 is not less than 20cm, and all erectting in each sand-gravel pile body 2 has the permeable pile body 3 that extends along the length direction of sand-gravel pile body 2, and this permeable pile body 3 is for being filled with the permeable bag of the imbibition property filler that can absorb moisture and expand in it; This permeable bag is permeable geotechnique's bag; This imbibition property filler can adopt filler commonly used known in this field, and as adopting lime mix filler, this lime mix filler is main by a kind of mixture that evenly mixes in quicklime and flyash, pozzolan, slag, slag and the cohesive soil.
A kind of compound soft clay foundation of the present invention; Owing to be provided with the permeable pile body 3 that extends along the length direction of sandstone pile body 2 in the sand-gravel pile body 2; Utilize like this this permeable pile body 3 can and sand-gravel pile body 2 and stake between bury bear vertical load jointly and, improved whole bearing capacity and the shear resistance of ground its hardpan that is passed to soft clay ground element body below; Simultaneously; Permeable pile body 3 is for being filled with the permeable bag of the imbibition property filler that can absorb moisture and expand in it; And imbibition property filler is a lime mix filler, and the moisture in the bury can infiltrate in permeable geotechnique's bag in the gap between sandstone in sand-gravel pile body 2 smoothly between the stake like this, and this moment, water was absorbed by the lime mix in permeable geotechnique's bag on the one hand; But the lime mix expands bury between compaction pile; Thereby improve the bulk strength of soft clay foundation greatly, and accelerated discharging consolidation speed, fulfil residual settlement ahead of schedule; On the other hand with lime mix generation chemical reaction; And in chemical reaction process, can the heat release dehydration make the ultra hydrostatic pressing quilt dissipation rapidly in the bury between stake; Thereby the intensity of bury between stake is improved rapidly; And then the bulk strength of soft clay foundation is improved again, overcome traditional sand-gravel pile processing method the soft clay ground rheobase is improved limited defective.
Among the present invention, also can admix a spot of water in the lime mix filler, like this, a spot of water can prevent the pulverized limestone airborne dust and cause air pollution in making lime mix process.
Among the present invention, be equipped with sandstone mattress layer 5 on soft clay ground element body 1 and the superstructure 4 contacted contact surfaces, the thickness of this sandstone mattress layer 5 is 40～60cm; Utilize like this that the gap between sandstone makes sandstone mattress layer 5 can form a good horizontal drainage channel in the sandstone mattress layer 5; Cooperating through sandstone mattress layer 5 and sand-gravel pile body 2 like this; Make soft clay foundation have horizontal drainage passage and vertical drainage passage, thereby can further accelerate the discharging consolidation speed of soft clay foundation.
The concrete construction sequence of compound soft clay foundation of the present invention is following:
One, permeable pile body is prefabricated: lime mix filler is packed in the prefabricated permeable geotechnique bag of its diameter, and vibratory compaction, thereby the permeable geotechnique's bag of encapsulation forms permeable pile body 3 behind the vibratory compaction; When making permeable pile body 3, also can be in the real filler of lime mix admixture gypsum and cement, can improve the pile strength of permeable pile body 3 like this;
Two, location; Move stake machine and leading truck; Stake pipe and stake sharp align piles position, adopt vibration sinking tube, hammer hidden pipe or long spiral way on soft clay ground element body 1, to sink to the predetermined degree of depth to the stake pipe, form one along the soft clay ground short transverse of element body 1 extends; The installing hole that supplies permeable pile body 3 and sand-gravel pile body 2 to install, the difference in the stake footpath of the aperture of this installing hole and permeable pile body 3 should not be less than 20cm;
Three, the making of sand-gravel pile body 2: hang in prefabricated permeable pile body 3 in the installing hole between two parties; The sandstone that perfusion has good water permeability in the gap of limit vibration pile pulling tube edge between installing hole and permeable pile body 3 then; Sand in the sandstone should adopt pure medium coarse sand; Make the sandstone between the outer wall of inwall and permeable pile body 3 of installing hole form compacting body, this compacting body is sand-gravel pile body 2;
Four, repeat above-mentioned steps, up to till forming the sand-gravel pile body 2 of the quantity that meets design requirement on the soft clay ground element body 1;
Five, on soft clay ground element body 1 and superstructure 4 contacted contact surfaces (being the top of soft clay ground element body 1), lay the suitable sandstone mattress layer 5 of area of contact surface therewith, the thickness of this sandstone mattress layer 5 is 40～60cm; Described soft clay ground element body 1, sand-gravel pile body 2, permeable pile body 3 promptly constitute composite foundation of the present invention with sandstone mattress layer 5.
The foregoing description and graphic and non-limiting product form of the present invention and style, the those of ordinary skill of any affiliated technical field all should be regarded as not breaking away from patent category of the present invention to its suitable variation or modification of doing.
Claims (8)
1. compound soft clay foundation; Comprise soft clay ground element body and some sand-gravel pile bodies; Each sand-gravel pile body is erected in the soft clay ground element body respectively at interval; It is characterized in that: erectting in the above-mentioned sand-gravel pile body has the permeable pile body that extends along the length direction of above-mentioned sand-gravel pile body, and above-mentioned permeable pile body is for being filled with the permeable bag of the imbibition property filler that can absorb moisture and expand in it.
2. a kind of compound soft clay foundation according to claim 1 is characterized in that: above-mentioned imbibition property filler is a lime mix filler.
3. a kind of compound soft clay foundation according to claim 2 is characterized in that: above-mentioned lime mix filler is main by a kind of mixture that evenly mixes in quicklime and flyash, pozzolan, slag, slag and the cohesive soil.
4. a kind of compound soft clay foundation according to claim 2 is characterized in that: above-mentioned lime mix filler is for mainly by a kind of in quicklime and flyash, pozzolan, slag, slag and the cohesive soil and mixture that low amounts of water evenly mixes.
5. a kind of compound soft clay foundation according to claim 1, it is characterized in that: the wall thickness of above-mentioned sand-gravel pile body is not less than 20cm.
6. a kind of compound soft clay foundation according to claim 1 is characterized in that: above-mentioned permeable bag is permeable geotechnique's bag.
7. a kind of compound soft clay foundation according to claim 1 is characterized in that: be equipped with the sandstone mattress layer on the contacted contact surface of above-mentioned soft clay ground element body and superstructure.
8. a kind of compound soft clay foundation according to claim 7 is characterized in that: the thickness of above-mentioned sandstone mattress layer is 40～60cm.
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2012102765206A CN102817353A (en) | 2012-08-03 | 2012-08-03 | Composite soft clay foundation |
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| CN2012102765206A CN102817353A (en) | 2012-08-03 | 2012-08-03 | Composite soft clay foundation |
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| CN102817353A true CN102817353A (en) | 2012-12-12 |
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Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103243705A (en) * | 2013-05-30 | 2013-08-14 | 高远 | Expanding water absorption and drainage consolidation device |
| WO2015152827A1 (en) * | 2014-04-03 | 2015-10-08 | Nanyang Technological University | Method of reducing moisture content of soil |
| CN106545009A (en) * | 2016-10-21 | 2017-03-29 | 上海市政工程设计研究总院（集团）有限公司 | A kind of sponge water-retention stake and its construction method |
| CN106638551A (en) * | 2016-10-21 | 2017-05-10 | 上海市政工程设计研究总院（集团）有限公司 | Improved soft soil foundation with sponge water storage piles |
| CN108867619A (en) * | 2018-06-14 | 2018-11-23 | 浙江大学 | Drainage plate and method with water uptake expansion material under piling prepressing |
| CN112049103A (en) * | 2020-09-14 | 2020-12-08 | 中国建筑第五工程局有限公司 | Construction method for rapid drainage and reinforcement of soft soil foundation |
Citations (10)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| BE832546A (en) * | 1974-08-22 | 1975-12-16 | METHOD AND DEVICE FOR STABILIZING CERTAIN SOILS | |
| JPS63134708A (en) * | 1986-11-26 | 1988-06-07 | Taisei Corp | Quick lime system ground-improving agent and ground improving work |
| CN1067086A (en) * | 1992-04-17 | 1992-12-16 | 山东省寿光县第二建筑工程公司 | Two-lime-sand pile for reinforcing soft foundation and manufacturing method thereof |
| JPH05125726A (en) * | 1991-11-05 | 1993-05-21 | Jiototsupu:Kk | Construction of pile with drain layer |
| CN101424079A (en) * | 2008-12-12 | 2009-05-06 | 湖南大学 | Construction method of geotechnical grid reinforcement bed course and sandstone pile bidirectional reinforced composite foundation |
| CN201495468U (en) * | 2009-08-18 | 2010-06-02 | 冯守中 | Structure of highway subgrade on wet soft foundation |
| CN101831901A (en) * | 2010-05-13 | 2010-09-15 | 广东省长大公路工程有限公司 | Shallow poor subsoil composite foundation stabilization treatment method |
| CN201891114U (en) * | 2010-11-11 | 2011-07-06 | 上海市政工程设计研究总院 | Dual radial mesh cage sandstone pile |
| CN102168420A (en) * | 2011-03-15 | 2011-08-31 | 冯守中 | Method for processing soft soil base by geotextile light active material piles |
| CN202787224U (en) * | 2012-08-03 | 2013-03-13 | 华侨大学 | Compound soft clay foundation |
-
2012
- 2012-08-03 CN CN2012102765206A patent/CN102817353A/en active Pending
Patent Citations (10)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| BE832546A (en) * | 1974-08-22 | 1975-12-16 | METHOD AND DEVICE FOR STABILIZING CERTAIN SOILS | |
| JPS63134708A (en) * | 1986-11-26 | 1988-06-07 | Taisei Corp | Quick lime system ground-improving agent and ground improving work |
| JPH05125726A (en) * | 1991-11-05 | 1993-05-21 | Jiototsupu:Kk | Construction of pile with drain layer |
| CN1067086A (en) * | 1992-04-17 | 1992-12-16 | 山东省寿光县第二建筑工程公司 | Two-lime-sand pile for reinforcing soft foundation and manufacturing method thereof |
| CN101424079A (en) * | 2008-12-12 | 2009-05-06 | 湖南大学 | Construction method of geotechnical grid reinforcement bed course and sandstone pile bidirectional reinforced composite foundation |
| CN201495468U (en) * | 2009-08-18 | 2010-06-02 | 冯守中 | Structure of highway subgrade on wet soft foundation |
| CN101831901A (en) * | 2010-05-13 | 2010-09-15 | 广东省长大公路工程有限公司 | Shallow poor subsoil composite foundation stabilization treatment method |
| CN201891114U (en) * | 2010-11-11 | 2011-07-06 | 上海市政工程设计研究总院 | Dual radial mesh cage sandstone pile |
| CN102168420A (en) * | 2011-03-15 | 2011-08-31 | 冯守中 | Method for processing soft soil base by geotextile light active material piles |
| CN202787224U (en) * | 2012-08-03 | 2013-03-13 | 华侨大学 | Compound soft clay foundation |
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103243705A (en) * | 2013-05-30 | 2013-08-14 | 高远 | Expanding water absorption and drainage consolidation device |
| WO2015152827A1 (en) * | 2014-04-03 | 2015-10-08 | Nanyang Technological University | Method of reducing moisture content of soil |
| CN106545009A (en) * | 2016-10-21 | 2017-03-29 | 上海市政工程设计研究总院（集团）有限公司 | A kind of sponge water-retention stake and its construction method |
| CN106638551A (en) * | 2016-10-21 | 2017-05-10 | 上海市政工程设计研究总院（集团）有限公司 | Improved soft soil foundation with sponge water storage piles |
| CN108867619A (en) * | 2018-06-14 | 2018-11-23 | 浙江大学 | Drainage plate and method with water uptake expansion material under piling prepressing |
| CN112049103A (en) * | 2020-09-14 | 2020-12-08 | 中国建筑第五工程局有限公司 | Construction method for rapid drainage and reinforcement of soft soil foundation |
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Application publication date: 20121212 |