CN106948309A - It is a kind of applied to sea wall pass the flood period protection in foundation stabilization construction method - Google Patents

It is a kind of applied to sea wall pass the flood period protection in foundation stabilization construction method Download PDF

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Publication number
CN106948309A
CN106948309A CN201710093196.7A CN201710093196A CN106948309A CN 106948309 A CN106948309 A CN 106948309A CN 201710093196 A CN201710093196 A CN 201710093196A CN 106948309 A CN106948309 A CN 106948309A
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China
Prior art keywords
mixing pile
control group
sea wall
pile
stirring
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CN201710093196.7A
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CN106948309B (en
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刘学应
孙平平
董邑宁
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Zhejiang University of Water Resources and Electric Power
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Zhejiang University of Water Resources and Electric Power
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    • E—FIXED CONSTRUCTIONS
    • E02—HYDRAULIC ENGINEERING; FOUNDATIONS; SOIL SHIFTING
    • E02B—HYDRAULIC ENGINEERING
    • E02B1/00—Equipment or apparatus for, or methods of, general hydraulic engineering, e.g. protection of constructions against ice-strains
    • E02B1/02—Hydraulic models
    • E—FIXED CONSTRUCTIONS
    • E02—HYDRAULIC ENGINEERING; FOUNDATIONS; SOIL SHIFTING
    • E02D—FOUNDATIONS; EXCAVATIONS; EMBANKMENTS; UNDERGROUND OR UNDERWATER STRUCTURES
    • E02D33/00—Testing foundations or foundation structures
    • E—FIXED CONSTRUCTIONS
    • E02—HYDRAULIC ENGINEERING; FOUNDATIONS; SOIL SHIFTING
    • E02D—FOUNDATIONS; EXCAVATIONS; EMBANKMENTS; UNDERGROUND OR UNDERWATER STRUCTURES
    • E02D5/00—Bulkheads, piles, or other structural elements specially adapted to foundation engineering
    • E02D5/22—Piles
    • E02D5/34—Concrete or concrete-like piles cast in position ; Apparatus for making same
    • E02D5/46—Concrete or concrete-like piles cast in position ; Apparatus for making same making in situ by forcing bonding agents into gravel fillings or the soil

Abstract

The invention discloses it is a kind of applied to sea wall pass the flood period protection in foundation stabilization construction method, comprise the following steps：(1) Embankment Foundation is simulated；(2) mixing pile construction is tested；(3) mixing pile position finding；(4) track is laid；(5) stake machine is in place；(6) sinking is stirred in advance；(7) whitewashing stirring lifting；(8) stirring is repeated to sink；(9) stirring lifting is repeated；(10) pile is finished.The present invention is simulated to sea wall first, sets up simulated test area, and mixing pile construction process is simulated in simulated test area, by measuring the index of correlation of the mixing pile, mixing pile construction parameter is reasonably filtered out；Constructed under the mixing pile parameter, big into pile bearing capacity after construction, foundation stabilization excellent effect, anti-rain flood control capacity is strong, is significant for the protected working of passing the flood period of sea wall.

Description

It is a kind of applied to sea wall pass the flood period protection in foundation stabilization construction method
Technical field
Pass the flood period means of defence, passed the flood period ground in protection applied to sea wall more particularly, to one kind the present invention relates to a kind of ground The construction method of reinforcing.
Background technology
, can be rapid when occurring the emergencies such as flood in order to prevent and control the disasters such as potential heavy rain, big vast flood Effective emergency response is obtained, casualties and property loss are reduced to greatest extent, often in the positions such as riverbank, harbour progress degree Flood construction of prevention work, sets up good, complete protection works of passing the flood period.Existing sea wall flood control moisture protection is relatively low, due to overall dike The constituent material of body is mainly mixing soil, causes overall sea wall to lack stationarity, such present situation is unable to reach flood control, protection against the tide Standard, will have no resistivity when meeting with powerful typhoon, the sudden and violent time of tide.
Mixing pile method is a kind of method of complex ground treatment, is widely used in the subgrades such as building, road in recent years Among processing.Because it has, construction technology is simple, equipment purchasing expense is low, technical operation is easily mastered, efficiency high the advantages of, It is used more widely III quickly at home.And designing unit generally applies deep-mixed pile technology among engineering design. The application in the soft foundation processing field in building construction, highway construction especially in coastal area is more extensive.
The content of the invention
It is an object of the invention to provide it is a kind of applied to sea wall pass the flood period protection in foundation stabilization construction method, it is right first Sea wall is simulated, and sets up simulated test area, mixing pile construction process is simulated in simulated test area, by measuring the mixing pile Index of correlation, reasonably filter out mixing pile construction parameter；Constructed under the mixing pile parameter, after construction into pile Carry power big, foundation stabilization excellent effect, anti-rain flood control capacity is strong, is significant for the protected working of passing the flood period of sea wall.
In order to solve the above-mentioned technical problem, adopt the following technical scheme that：
It is a kind of applied to sea wall pass the flood period protection in foundation stabilization construction method, it is characterised in that comprise the following steps：
(1) Embankment Foundation is simulated：Sea wall structure drawing is drawn first, reduces sea wall with certain proportion in drawing, and Simulated test area is built using the drawing as with reference to artificial；
(2) mixing pile construction is tested：A, pile driving construction experiment is stirred using control group test method(s) in simulated test area；b、 The bearing capacity of mixing pile in each control group, mixing uniformity and settling amount are measured, mixing pile parameter is screened according to measurement result；
(3) mixing pile position finding；
(4) track is laid：According to step (3) measurement result, mixer track is laid on sea wall, and the track is carried out Trial operation；
(5) stake machine is in place：Mixer is fitted into track, by track mixer to referring to fixed pile；
(6) sinking is stirred in advance：Using mixing pile parameter as foundation, start mixer, make agitating paddle stirring sinking；
(7) whitewashing stirring lifting：Open slurry pump, it was demonstrated that cement mortar from nozzle sprays when, start whitewashing stirring lifted；
(8) stirring is repeated to sink；
(9) stirring lifting is repeated；
(10) pile is finished：Repeat step (8) with (9) 3 times, you can complete 1 mixing pile；Clean after mixer along rail Road is moved to next position, repeat step (6) to step (10).
It is preferred that after, the step (1) is built during simulated test area, builds trial zone be molded first, then take Embankment Foundation layer, by Embankment Foundation layer laying to trial zone, laying completes backward trial zone and is filled to projected depth, and this sets Count depth consistent with the sea wall depth of water.
It is preferred that after, control group test method(s) is specially in step (2) a：Control group 1, control are set up according to test requirements document Group 2, control group 3 ..., control group N, each control group chooses different mixing pile parameters, and agitating shaft parameter specifically includes stirring pile Long, stirring pile is away from, stirring pile footpath, stirring number of times and cement infiltration capacity；Then respectively with regard to control group 1, control group 2, control Group 3 ..., control group N make piling experiment.
It is preferred that after, step (2) b measures mixing pile vertical limit first during the bearing capacity of measurement mixing pile Bearing capacity and the safety coefficient in simulated test area, then calculate the stirring pile bearing capacity in each control group according to following equation：
Ra=Quk/K
In formula：RaFor stirring pile bearing capacity；QukFor mixing pile ultimate vertical bearing capacity, K is for the safety in simulated test area Number；
It is preferred that after, step (2) b measures concretely comprising the following steps for mixing uniformity：Probe and feeler lever are installed first, will be visited Head is attached on measured mixing pile；Then make to drop hammer and only fall, hammering is popped one's head in, in continuous injection mixing pile of popping one's head in, note Record probe hits number per injection 30cm.
It is preferred that after, step (2) b calculates measured mixing pile region when measuring settling amount using layerwise summation method Interior trial zone settling amount.
It is preferred that after, the detailed process of mixing pile position finding is in the step (3)：Construction is determined using total powerstation first Scope control point, then coordinate the center of every mixing pile of measure with total powerstation and 100m steel rulers and be labeled.
It is preferred that after, the detailed process that step (4) middle orbit is laid is：A, track girder is set on sea wall first；b、 Track cylinder is set on track girder, and track cylinder is fixed with track girder using bolt；C, the installation lifting system on track cylinder System, the tackling system is driven by track cylinder；D, load hanger on mixer, hanger is mutually matched with tackling system.
It is preferred that after, spray pressure control is in 1.0-1.4Mpa in the step (7), and whitewashing amount is controlled in 330L/min.
It is preferred that after, the step (8) is repeated in stirring sinking watching, and whitewashing amount is detected first, is stirred if whitewashing amount has reached A parameter is mixed, the stirring of repeat step (5) agitating paddle is sunk；Conversely, open slurry pump, it was demonstrated that cement mortar from nozzle spray when, stir Mix oar to sink to stirring and continuously whitewash, spray pressure control is controlled in 200-280L/min in 0.8-0.95Mpa, whitewashing amount.
Due to using above-mentioned technical proposal, have the advantages that：
The present invention for it is a kind of applied to sea wall pass the flood period protection in foundation stabilization construction method, first to sea wall carry out mould Intend, set up simulated test area, mixing pile construction process is simulated in simulated test area, is referred to by the correlation for measuring the mixing pile Mark, reasonably filters out mixing pile construction parameter；Constructed under the mixing pile parameter, it is big into pile bearing capacity after construction, Foundation stabilization excellent effect, anti-rain flood control capacity is strong, is significant for the protected working of passing the flood period of sea wall.It is specific intentionally Effect show as it is following some：
1st, in Embankment Foundation simulation process, the area of sea wall is scaled down, but its structure is still according to sea wall Shape is designed；It is simulated that experiment is more scientific, reasonable in the trial zone, its test result is closer to practice of construction effect, more Has referential.
2nd, tested by mixing pile construction, reasonable, the mixing pile parameter of science can be filtered out, compare prior art, It is obviously improved the effect of cement mixing method ground；Produced problem is significantly reduced during practice of construction, accelerate construct into Degree and precision.
3rd, mixing pile construction position is measured in advance, and convenient construction is carried out in order, accelerating construction progress.
4th, the present invention lays on track, track and is laid with track cylinder and tackling system in advance before construction on sea wall, Drive mixer to move up and down by tackling system, facilitate mixer in place, it is time saving and energy saving, it is easy to operate；Track cylinder passes through Tackling system drives mixer horizontal movement, conveniently by mixer from previous pile displatement to latter stake position, without Other power-equipments such as loop wheel machine, it is time saving and energy saving, it is convenient and swift, further speed up construction speed.
5th, the method for cement mixing method ground has the advantages that boundary of works area is small, pollution-free, noise is small；And mixing pile is strong Degree is big, and compressibility is small, and speed of application is also easier to control, and the settling amount of Embankment Foundation can also be effectively controlled in addition.
Brief description of the drawings
The invention will be further described below in conjunction with the accompanying drawings：
Fig. 1 for the present invention it is a kind of applied to sea wall pass the flood period protection in foundation stabilization construction method construction process figure；
The schematic flow sheet that Fig. 2 tests for mixing pile construction in the present invention；
Fig. 3 is Sea dike reinforcement sectional schematic diagram in the present invention；
Fig. 4 is the distribution schematic diagram of mixing pile in the present invention；
Fig. 5 is the structural representation of middle orbit of the present invention；
Fig. 6 be Fig. 5 in A to structural representation；
Fig. 7 be Fig. 6 in B to structural representation.
Embodiment
As shown in table 1 to Fig. 7, a kind of construction method for the foundation stabilization in protection of being passed the flood period applied to sea wall, including following step Suddenly：
(1) Embankment Foundation is simulated：
According to the actual arbitrary shape sea wall structure drawing of construction sea wall, by sea wall with 1 in drawing:200 ratio contracting It is small, and build simulated test area using the drawing as with reference to artificial：
During building simulated test area, trial zone is built according to drawing be molded first, then take Embankment Foundation Layer, in Embankment Foundation layer laying to trial zone, will do basic compacting processing, accomplishes trial zone ground and Embankment Foundation structure phase Seemingly；Laying completes backward trial zone and is filled to projected depth, and the projected depth is consistent with the sea wall depth of water.
(2) construction test of mixing pile 1：
A, the construction test of stake 1 is stirred in simulated test area using control group test method(s)：Set up pair according to test requirements document According to group 1, control group 2, control group 3, control group 4, control group 5, control group 6, control group 7, control group 8, control group 9, control group 10, each control group chooses different parameters of mixing pile 1, and (agitating shaft parameter specifically includes the column length of mixing pile 1, the post of mixing pile 1 away from, stirring 1 post footpath of stake, stirring number of times and cement infiltration capacity), the specific parameter of mixing pile 1 is as shown in table 1：
Each parameter setting of 10 mixing pile of control group 1- control groups 1 of table 1
Then respectively with regard to control group 1, control group 2, control group 3, control group 4, control group 5, control group 6, control group 7, right Make piling experiment according to group 8, control group 9, control group 10.
Mixing pile 1 is measured after b, pile：
1. loading test：The safety coefficient in the ultimate vertical bearing capacity of mixing pile 1 and simulated test area is measured first, then The bearing capacity of mixing pile 1 in each control group is calculated according to following equation：
Ra=Quk/K
In formula：RaFor the bearing capacity of mixing pile 1；QukFor the ultimate vertical bearing capacity of mixing pile 1, K is the safety in simulated test area Coefficient；
Measurement result is as shown in table 2：
The bearing capacity measurement result of mixing pile 1 in the control group 1- control groups 10 of table 2
Compare group Bearing capacity (kN)
Control group 1 85.35
Control group 2 86.85
Control group 3 88.92
Control group 4 88.01
Control group 5 87.75
Control group 6 88.35
Control group 7 89.86
Control group 8 89.23
Control group 9 89.90
Control group 10 88.64
2. mixing uniformity is detected：Probe and feeler lever are installed first, are attached to popping one's head on measured mixing pile 1；So After make to drop hammer and only fall, hammering probe, in continuous injection mixing pile 1 of popping one's head in, record probe hits number per injection 30cm；It is surveyed Test result is as shown in table 3：
The uniformity measurements of mixing pile 1 in the control group 1- control groups 10 of table 3
Compare group Hit number
Control group 1 23
Control group 2 30
Control group 3 30
Control group 4 28
Control group 5 31
Control group 6 33
Control group 7 36
Control group 8 35
Control group 9 38
Control group 10 30
3. settling amount is detected：Trial zone settling amount in the measured region of mixing pile 1 is calculated using layerwise summation method, it is surveyed Measure result as shown in table 4：
Settling amount measurement result in the control group 1- control groups 10 of table 4
From shown in table 2- tables 4, it is clear that the mixing pile 1 of control group 9 its consolidation effect it is optimal, therefore use control group 9 Parameter carry out Sea dike reinforcement construction.
(3) position finding of mixing pile 1：
Boundary of works area control point is determined using total powerstation first, then coordinates every stirring of measure with total powerstation and 100m steel rulers The center of stake 1 is simultaneously labeled.
(4) track is laid：
According to step (3) measurement result, mixer track (as illustrated in figs. 5-7) is laid on sea wall：
A, first the setting track girder 2 on sea wall；
B, the setting track cylinder 3 on track girder 2, track cylinder 3 is fixed with track girder 2 using bolt 4；
C, the installation tackling system 5 on track cylinder 3, the tackling system 5 are driven by track cylinder 3；
D, load hanger on mixer, hanger is mutually matched with tackling system 5.
After the completion of laying, trial operation is carried out to the track, it is ensured that track can normally be run.
(5) stake machine is in place：
Hanger on mixer is fitted into track, by track mixer to referring to fixed pile, and mixer entered Row is fixed；
(6) sinking is stirred in advance：According to the parameter of mixing pile 1 of control group 9, start mixer, loosening tackling system 5 makes agitating paddle Stir along leading truck, subsidence velocity is by electrical control gear control；Stir in advance in sinking watching for the first time, mixer is not sprayed water Mud；
(7) whitewashing stirring lifting：
Open slurry pump, it was demonstrated that cement mortar from nozzle sprays when, start whitewashing stirring lifting, spray pressure control in 1.0- 1.4Mpa, whitewashing amount is controlled in 330L/min.
(8) stirring is repeated to sink：
Whitewashing amount is detected first, if whitewashing amount has reached the parameter of mixing pile 1, the stirring of repeat step (5) agitating paddle is sunk；Instead It, open slurry pump, it was demonstrated that cement mortar from nozzle sprays when, agitating paddle sink stir simultaneously continuously whitewashes, spray pressure control exist 0.8-0.95Mpa, whitewashing amount is controlled in 200-280L/min.
(9) stirring lifting is repeated：
Open slurry pump, it was demonstrated that cement mortar from nozzle sprays when, start whitewashing stirring lifting, spray pressure control in 1.0- 1.4Mpa, whitewashing amount is controlled in 330L/min.
(10) pile is finished：
Repeat step (8) with (9) 3 times, you can complete 1 mixing pile 1；
(11) next mixing pile 1 is constructed：
Clean after mixer, by above-mentioned tackling system 5, next position, repeat step (6) are moved to along track cylinder To step (10), finished until completing all constructions of mixing pile 1.
The specific embodiment of the present invention is these are only, but the technical characteristic of the present invention is not limited thereto.It is any with this hair Based on bright, to solve essentially identical technical problem, essentially identical technique effect is realized, made ground simple change, etc. With replacement or modification etc., all it is covered by among protection scope of the present invention.

Claims (10)

1. it is a kind of applied to sea wall pass the flood period protection in foundation stabilization construction method, it is characterised in that comprise the following steps：
(1) Embankment Foundation is simulated：Sea wall structure drawing is drawn first, reduces sea wall with certain proportion in drawing, and with this Drawing is to build simulated test area with reference to artificial；
(2) mixing pile construction is tested：A, pile driving construction experiment is stirred using control group test method(s) in simulated test area；B, measurement The bearing capacity of mixing pile, mixing uniformity and settling amount in each control group, mixing pile parameter is screened according to measurement result；
(3) mixing pile position finding；
(4) track is laid：According to step (3) measurement result, mixer track is laid on sea wall, and test run is carried out to the track OK；
(5) stake machine is in place：Mixer is fitted into track, by track mixer to referring to fixed pile；
(6) sinking is stirred in advance：Using mixing pile parameter as foundation, start mixer, make agitating paddle stirring sinking；
(7) whitewashing stirring lifting：Open slurry pump, it was demonstrated that cement mortar from nozzle sprays when, start whitewashing stirring lifted；
(8) stirring is repeated to sink；
(9) stirring lifting is repeated；
(10) pile is finished：Repeat step (8) with (9) 3 times, you can complete 1 mixing pile；Moved after cleaning mixer along track Move to next position, repeat step (6) to step (10).
2. according to claim 1 it is a kind of applied to sea wall pass the flood period protection in foundation stabilization construction method, it is characterised in that: The step (1) is built during simulated test area, builds trial zone be molded first, then takes Embankment Foundation layer, by this In Embankment Foundation layer laying to trial zone, laying completes backward trial zone and is filled to projected depth, the projected depth and sea wall water It is deep consistent.
3. according to claim 1 it is a kind of applied to sea wall pass the flood period protection in foundation stabilization construction method, it is characterised in that: Control group test method(s) is specially in step (2) a：According to test requirements document set up control group 1, control group 2, control group 3 ..., Control group N, each control group chooses different mixing pile parameters, agitating shaft parameter specifically include mixing pile column length, stirring pile away from, stir Mix pile footpath, stirring number of times and cement infiltration capacity；Then respectively with regard to control group 1, control group 2, control group 3 ..., control group N make Piling experiment.
4. according to claim 1 it is a kind of applied to sea wall pass the flood period protection in foundation stabilization construction method, it is characterised in that: Step (2) b measures mixing pile ultimate vertical bearing capacity and simulated test first during the bearing capacity of measurement mixing pile The safety coefficient in area, then calculates the stirring pile bearing capacity in each control group according to following equation：
Ra=Quk/K
In formula：RaFor stirring pile bearing capacity；QukFor mixing pile ultimate vertical bearing capacity, K is the safety coefficient in simulated test area.
5. according to claim 1 it is a kind of applied to sea wall pass the flood period protection in foundation stabilization construction method, it is characterised in that: Step (2) b measures concretely comprising the following steps for mixing uniformity：Probe and feeler lever are installed first, probe are attached to measured Mixing pile on；Then make to drop hammer and only fall, hammering is popped one's head in, in continuous injection mixing pile of popping one's head in, record probe is per injection 30cm's hits number.
6. according to claim 1 it is a kind of applied to sea wall pass the flood period protection in foundation stabilization construction method, it is characterised in that: Step (2) b calculates the trial zone in measured mixing pile region when measuring settling amount, using layerwise summation method and settled Amount.
7. according to claim 1 it is a kind of applied to sea wall pass the flood period protection in foundation stabilization construction method, it is characterised in that: The detailed process of mixing pile position finding is in the step (3)：Boundary of works area control point is determined using total powerstation first, then used Total powerstation and 100m steel rulers coordinate the center for determining every mixing pile and are labeled.
8. according to claim 1 it is a kind of applied to sea wall pass the flood period protection in foundation stabilization construction method, it is characterised in that: The detailed process that step (4) middle orbit is laid is：A, track girder is set on sea wall first；B, rail is set on track girder Road cylinder, track cylinder is fixed with track girder using bolt；C, on track cylinder tackling system is installed, the tackling system is by rail Road cylinder drives；D, load hanger on mixer, hanger is mutually matched with tackling system.
9. according to claim 1 it is a kind of applied to sea wall pass the flood period protection in foundation stabilization construction method, it is characterised in that: Spray pressure control is in 1.0-1.4Mpa in the step (7), and whitewashing amount is controlled in 330L/min.
10. a kind of construction method for the foundation stabilization in protection of being passed the flood period applied to sea wall according to claim 1, its feature exists In:The step (8) is repeated in stirring sinking watching, and whitewashing amount is detected first, if whitewashing amount has reached mixing pile parameter, is repeated The stirring of step (5) agitating paddle is sunk；Conversely, open slurry pump, it was demonstrated that cement mortar from nozzle sprays when, agitating paddle sink stir simultaneously Continuous whitewashing, spray pressure control is controlled in 200-280L/min in 0.8-0.95Mpa, whitewashing amount.
CN201710093196.7A 2017-02-21 2017-02-21 It is a kind of applied to sea wall pass the flood period protection in foundation stabilization construction method Active CN106948309B (en)

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CN102677662A (en) * 2012-05-22 2012-09-19 天津二十冶建设有限公司 Construction method of cement-mixed pile for treating coastal soft soil foundation
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