CN101041955A - Large-area soft foundation soil bag and filling composite consolidation method - Google Patents
Large-area soft foundation soil bag and filling composite consolidation method Download PDFInfo
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- CN101041955A CN101041955A CN 200710021227 CN200710021227A CN101041955A CN 101041955 A CN101041955 A CN 101041955A CN 200710021227 CN200710021227 CN 200710021227 CN 200710021227 A CN200710021227 A CN 200710021227A CN 101041955 A CN101041955 A CN 101041955A
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Abstract
The invention relates to a composite strengthen method of large soft foundation soil bag and foundation trench, used to strengthen large soft foundation. The invention alternatively laminates soil bags at whole object area, while the production of soil bag comprises that according to the demand of soil quality and bearing force, setting the standard and size of bag, packing object soft soil into bag, and bonding the bag opening, and coupling two soil bags whose openings are bonded into connected shape. And the invention comprises that the connected soil bags are alternatively laminated to lay whole soft foundation trench, while each layer is pressed by small plate and each layer is 15-30cm thick, and using construction device to process. The invention can access large construction device, with short construction period and low cost.
Description
Technical field
The present invention relates to a kind of large-area soft foundation earth bag and change fill out composite consolidation, be applicable to the consolidation process of large-area soft foundation.Be particularly suitable for moulding consolidation process under shape mucky soil and the complex geological condition at stream.
Background technology
At present, the normal cushion etc. that adopts in the large-area soft foundation reinforced construction method.At soft foundation particularly in the construction of plastic flow mud matter soil, because the bearing capacity of soft foundation is low, makes large-scale, heavy-duty machinery can't enter construction, can only be by entering construction behind displacement method or a considerable amount of building stones of auxilliary pad, caused the cost height, defective such as long in time limit:
Employing is changed and filled out job practices soft foundation is handled, and is therefore higher to the requirement for bearing capacity of ground because these methods of employing all need main equipment, heavy-duty machinery or earth moving plant to enter construction, and is lower than 40Kpa/m
2Large-scale, the jumbo of soft foundation can't enter construction at all, need a large amount of bed course of place mat equally, satisfy plant equipment and enter construction, so the cost height, long in time limit.
Summary of the invention
The objective of the invention is to overcome above-mentioned deficiency, provide a kind of and can make things convenient for by force that rammer equipment enters, the construction safety coefficient is big, cost is low, short large-area soft foundation earth bag of duration with change the composite consolidation method of filling out.
The object of the present invention is achieved like this: a kind of large-area soft foundation earth bag with change the composite consolidation method of filling out, be characterized in: the cross stratification in whole need consolidation process zone by earth bag piles up full shop, create favorable conditions for reinforcing soft soil foundation, and then fill out the composite consolidation construction technology in conjunction with changing, can carry out shallow layer reinforcement to 6～8m scope ground, make large-area soft foundation reach the required bearing capacity of designing requirement, the method for making of described earth bag is: according to the requirement of soil property and required bearing capacity, the specification of sack is set, the size and the number of plies of piling up earth bag, directly be filled into bag with the on-the-spot weak soil that needs to handle, sack is tightened; Then, two earth bags are become a pair of, sack and sack are to being bundled into the disjunctor shape, the concrete processing step of this method is as follows: at first, on the soft foundation that need are handled sturdy disjunctor earth bag cross stratification piled up and completely assist on soft foundation every shop one deck, with small-sized dull and stereotyped compacting, make it every bed thickness 15～30cm, then, enter construction machinery and carry out earthwork.
Use this technology, can guarantee that the soft foundation various device launches the requirement of construction, can reach the demand of suitable dissimilar construction machineries by control hierarchy place mat earth bag again soft ground treatment self.Promptly the cross stratification by earth bag piles up full shop in whole need consolidation process zone, creates favorable conditions for reinforcing soft soil foundation, again in conjunction with other deep level of processing technology, makes soft foundation reach the required bearing capacity of designing requirement.This method construction safety coefficient is big, cost is low, and the duration is short.Be specially adapted to soft foundation particularly bearing capacity be lower than 40Kpa/m
2The place strengthening construction.
This worker method following advantage arranged:
1, short construction period, cost performance height: the effect that this construction technology is directly reinforced owing to the soft foundation top layer that utilizes earth bag that need are handled, and draw materials conveniently, cost is low, short construction period; Simultaneously, because construction cost descends, quality improves, and the soft foundation behind the earth bag composite consolidation can require layer stack according to difference, has formed " crust layer " of practical significance, makes soft foundation be fit to the needs of different mechanical executions fast; Its cost performance improves greatly.
2, be not subjected to the low restriction of soft foundation bearing capacity, can arbitrarily adjust the bearing capacity on soft foundation top layer as required: by adjusting the number of plies of earth bag, make it to be fit to the demand of different construction machineries, thereby provide effective guarantee for the consolidation process of soft foundation bearing capacity of foundation soil.And, reach final required reinforcing and render a service in conjunction with other processing to the soft foundation method.
Description of drawings
The single earth bag sketch that Fig. 1 adopts for the present invention.
Fig. 2 becomes a pair of formation disjunctor earth bag sketch for two earth bags that the present invention adopts.
The disjunctor earth bag layer stack schematic diagram that Fig. 3 adopts for the present invention.
Fig. 4 is the calculating schematic diagram of the earth bag number of plies of the present invention's employing.
The specific embodiment
The present invention relates to a kind of large-area soft foundation earth bag and change the composite consolidation method of filling out, it is that the cross stratification by earth bag piles up full shop in whole need consolidation process zone, as Fig. 3, create favorable conditions for reinforcing soft soil foundation, and then, make large-area soft foundation reach the required bearing capacity of designing requirement in conjunction with changing the technology of filling out.The method for making of its earth bag is as follows: at first, according to the requirement of soil property and required bearing capacity, specification, the size of sack is set, bag material can with woven bag or other be such as material such as polypropylenes.Directly be filled into bag with the on-the-spot weak soil that needs to handle, adorn 2/3 approximately for every bag, sack tightens the earth bag as Fig. 1; Then, two earth bags are become a pair of, sack and sack are to being bundled into as Fig. 2 disjunctor shape.The concrete construction sequence of this method is as follows: at first, on the soft foundation that need are handled sturdy disjunctor earth bag cross stratification piled up and completely assist on soft foundation, every shop one deck is tamped with small-sized dull and stereotyped rammer, makes it the about 15～30cm of every bed thickness; Then, enter construction machinery and carry out earthwork (number of plies of earth bag is calculated according to the ground connection ratio of stake machine or earth moving plant, and is attached).
Attached: the calculating of the earth bag number of plies, as Fig. 4:
Design formulas P=P
o* b/b+2Ht
gθ
In the formula: P---soft foundation bearing capacity P
o---the foundation bottom bearing capacity
B---foundation bottom width H---earth bag stacking height
t
gθ---the pressure diffusion angle of flare after earth bag is banked up
Example: existing soft basic place needs static pressure pipe pile to carry out consolidation process, the bearing capacity P=35Kpa/m of known place soft foundation for 100,000 squares
2, and the ground connection of 500T Static pressure pile driver that enters construction is than for 6T, promptly soft base bearing capacity needs P
o=60Kpa/m
2, soft substrate contact width b=1m.
Ask: earth bag needs laying depth H.
Separate: the pressure angle of flare θ of earth bag=45 °, P
o=60Kpa/m
2, b=1m, place bearing capacity f
S=35kpa then acts on load power P on the weak soil of place and can be calculated by following formula and (make P≤f after pressure diffusion
S=35kpa)
P＝P
o×b/(b+2H·t
gθ)＝30＝60×1/(1+2×H×1)
H≥0.4m
Making the 500T Static pressure pile driver enter construction, highly is 0.4m with auxilliary the establishing of this law earth bag, and the thickness of earth bag after compaction in layers or densification is 0.15m, therefore just can make the Static pressure pile driver normal construction with three layers of earth bag after compaction in layers or compacting.
Claims (1)
1, a kind of large-area soft foundation earth bag with change the composite consolidation method of filling out, it is characterized in that: the cross stratification in whole need consolidation process zone by earth bag piles up full shop, the method for making of described earth bag is: according to the requirement of soil property and required bearing capacity, specification, the size of sack are set, directly be filled into bag with the on-the-spot weak soil that needs to handle, sack is tightened; Then, two earth bags are become a pair of, sack and sack are to being bundled into the disjunctor shape, this method comprises following processing step: on the soft foundation that need are handled sturdy disjunctor earth bag cross stratification piled up and completely assist on soft foundation, every shop one deck with small-sized dull and stereotyped compacting, makes it every bed thickness 15～30cm, then, enter construction machinery and carry out earthwork.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 200710021227 CN101041955A (en) | 2007-04-17 | 2007-04-17 | Large-area soft foundation soil bag and filling composite consolidation method |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 200710021227 CN101041955A (en) | 2007-04-17 | 2007-04-17 | Large-area soft foundation soil bag and filling composite consolidation method |
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| CN101041955A true CN101041955A (en) | 2007-09-26 |
Family
ID=38807728
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 200710021227 Pending CN101041955A (en) | 2007-04-17 | 2007-04-17 | Large-area soft foundation soil bag and filling composite consolidation method |
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Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102518111A (en) * | 2011-11-15 | 2012-06-27 | 攀钢集团工程技术有限公司 | Blast furnace slag replacement method for high-fill steel slag foundation |
| CN102587385A (en) * | 2011-12-30 | 2012-07-18 | 青建集团股份公司 | Foundation pit supporting method for sludge-exchanged and filled soft soil |
| CN103882849A (en) * | 2014-03-03 | 2014-06-25 | 中国核电工程有限公司 | Method for foundation treatment and argument and analysis of vertical weak intercalated layer foundation in nuclear power plant |
-
2007
- 2007-04-17 CN CN 200710021227 patent/CN101041955A/en active Pending
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102518111A (en) * | 2011-11-15 | 2012-06-27 | 攀钢集团工程技术有限公司 | Blast furnace slag replacement method for high-fill steel slag foundation |
| CN102518111B (en) * | 2011-11-15 | 2014-05-21 | 攀钢集团工程技术有限公司 | Blast furnace slag replacement method for high-fill steel slag foundation |
| CN102587385A (en) * | 2011-12-30 | 2012-07-18 | 青建集团股份公司 | Foundation pit supporting method for sludge-exchanged and filled soft soil |
| CN103882849A (en) * | 2014-03-03 | 2014-06-25 | 中国核电工程有限公司 | Method for foundation treatment and argument and analysis of vertical weak intercalated layer foundation in nuclear power plant |
| CN103882849B (en) * | 2014-03-03 | 2016-08-24 | 中国核电工程有限公司 | A kind of argument and analysis and method for processing foundation containing vertical weak foundation for nuclear power plant |
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