CN101041959A - Large-area soft foundation soil bag field consolidation method - Google Patents
Large-area soft foundation soil bag field consolidation method Download PDFInfo
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- CN101041959A CN101041959A CN 200710021230 CN200710021230A CN101041959A CN 101041959 A CN101041959 A CN 101041959A CN 200710021230 CN200710021230 CN 200710021230 CN 200710021230 A CN200710021230 A CN 200710021230A CN 101041959 A CN101041959 A CN 101041959A
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- soil
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Abstract
The invention relates to a large-area soft foundation soil bag strengthen method, used to strengthen large-area soft foundation, in particular to strengthen flow mud soil and complex geological condition. The invention alternatively laminates soil bags in whole object area, to support the strengthen process on soft foundation. And the production of soil bag comprises that setting the standard and size of bag, according to the bearing demand, packing object soft soil into bag, and bonding the bag opening, and coupling two soil bags whose openings are bonded into connected shape. The invention can combine present large-area construction technique, as one composite strengthen technique, with which large construction device can enter into site, with short construction period and low cost.
Description
Technical field
The present invention relates to a kind of large-area soft foundation soil bag field consolidation method, 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, in the large-area soft foundation reinforced construction method normal adopt vacuum-dewatering in conjunction with low-energy strong-ramming method, vacuum electroosmosis precipitation in conjunction with the low-energy strong-ramming method and change fill out, pile foundation construction method etc.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:
1, vacuum-dewatering, vacuum electroosmosis precipitation are in conjunction with the low-energy strong-ramming method
Vacuum-dewatering, its core of vacuum electroosmosis precipitation worker method are the water content that reduces in the soft foundation soil body, make it to reach the required optimum moisture content of strong rammer.In fact the bearing capacity by vacuum-dewatering or vacuum electroosmosis precipitation groundwork does not obtain raising by a relatively large margin, also needs improve with strong rammer the bearing capacity of ground.But, be lower than 40Kpa/m
2Soft foundation on carry out dynamic consolidation construction, the equipment that rams by force can't enter the place at all and launch construction, generally all takes the method for the quite thick mountain skin soil of auxilliary pad, subgrade case or big iron plate, to reduce the ground connection ratio of strong rammer equipment, strong rammer equipment can be constructed.Because strenuous vibration and the operation of strong rammer equipment in construction is uneven, often produces unstable phenomenon, therefore with subgrade case or the auxilliary pad of big iron plate, dangerous coefficient increases, and the cost height, and is long in time limit.
2, construction method such as cushion, pile foundation
Adopt cushion, pile foundation construction method that soft foundation is handled, therefore higher because these methods of employing all need main equipment, heavy-duty machinery or earth moving plant to enter construction to the requirement for bearing capacity of ground, and be 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 that heavy construction equipment enters, the construction safety coefficient is big, cost is low, the large-area soft foundation soil bag field consolidation method that the duration is short.
The object of the present invention is achieved like this: a kind of large-area soft foundation soil bag field consolidation method, it is characterized in that: the cross stratification in whole need consolidation process zone by earth bag piles up full shop, enter with convenient construction equipment, create favorable conditions for reinforcing soft soil foundation, 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 are 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.
Use this method, 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 structure 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.
3, this worker method can become a kind of composite consolidation technology in conjunction with existing single large-area construction technology.
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 soil bag field consolidation method, 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 other deep level of processing technology.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.
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 soil bag field consolidation method, it is characterized in that: the cross stratification in whole need consolidation process zone by earth bag piles up full shop, create favorable conditions for reinforcing soft soil foundation, 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.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 200710021230 CN101041959A (en) | 2007-04-17 | 2007-04-17 | Large-area soft foundation soil bag field consolidation method |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 200710021230 CN101041959A (en) | 2007-04-17 | 2007-04-17 | Large-area soft foundation soil bag field consolidation method |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN101041959A true CN101041959A (en) | 2007-09-26 |
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ID=38807732
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|---|---|---|---|
| CN 200710021230 Pending CN101041959A (en) | 2007-04-17 | 2007-04-17 | Large-area soft foundation soil bag field consolidation method |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103061226A (en) * | 2013-01-06 | 2013-04-24 | 中国建筑第六工程局有限公司 | Structure and construction method for temporarily reinforcing soft soil foundation |
| CN112127320A (en) * | 2020-09-29 | 2020-12-25 | 湖北久树环境科技有限公司 | Method for quickly solidifying bagged soil for flood control and emergency rescue |
-
2007
- 2007-04-17 CN CN 200710021230 patent/CN101041959A/en active Pending
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103061226A (en) * | 2013-01-06 | 2013-04-24 | 中国建筑第六工程局有限公司 | Structure and construction method for temporarily reinforcing soft soil foundation |
| CN112127320A (en) * | 2020-09-29 | 2020-12-25 | 湖北久树环境科技有限公司 | Method for quickly solidifying bagged soil for flood control and emergency rescue |
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