CN106087996B - Manual digging pile construction method based on self leveling backpressure device - Google Patents
Manual digging pile construction method based on self leveling backpressure device Download PDFInfo
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- CN106087996B CN106087996B CN201610572089.8A CN201610572089A CN106087996B CN 106087996 B CN106087996 B CN 106087996B CN 201610572089 A CN201610572089 A CN 201610572089A CN 106087996 B CN106087996 B CN 106087996B
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- 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
- E02D5/38—Concrete or concrete-like piles cast in position ; Apparatus for making same making by use of mould-pipes or other moulds
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- E—FIXED CONSTRUCTIONS
- E02—HYDRAULIC ENGINEERING; FOUNDATIONS; SOIL SHIFTING
- E02D—FOUNDATIONS; EXCAVATIONS; EMBANKMENTS; UNDERGROUND OR UNDERWATER STRUCTURES
- E02D7/00—Methods or apparatus for placing sheet pile bulkheads, piles, mouldpipes, or other moulds
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- Engineering & Computer Science (AREA)
- Structural Engineering (AREA)
- Life Sciences & Earth Sciences (AREA)
- General Life Sciences & Earth Sciences (AREA)
- Mining & Mineral Resources (AREA)
- Paleontology (AREA)
- Civil Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Piles And Underground Anchors (AREA)
- Placing Or Removing Of Piles Or Sheet Piles, Or Accessories Thereof (AREA)
Abstract
The invention belongs to the construction field of artificial digging pile, in order to solve under water rich strata geological conditions, artificial digging pile pass through in layer of sand, Extra-fine sand geology work progress gush sand, burst sand, collapse hole, degree control the problems such as, provide a kind of manual digging pile construction method based on self leveling backpressure device, using self leveling backpressure device and combination horizon rule examination steel pile casting insert state during construction, jack back-pressure steel pile casting is utilized.Can solve the problems, such as to be limited close to existing railway operating line Active workings using counter-pressure method of the present invention, the activity duration it is limited, the degree control problem of steel pile casting, reduce the input in large scale equipment and large area operation place, the verticality of steel pile casting can dynamically be adjusted in due course at the same time, construction effect is good.
Description
Technical field
The invention belongs to the construction field of artificial digging pile, and in particular to a kind of based on the artificial of self leveling backpressure device
Dug pile construction method.
Background technology
Artificial digging pile has the characteristics that operating space requirement is small, construction technology is simple, speed of application is fast, low cost,
In building pile foundation work progress, artificial digging pile is become as the first choice of many engineering designs.Features as poor geologic condition is being run into, is being dug
Hole stake is using one section of construction method for pouring a section concrete retaining wall is excavated, and the method for concrete guard wall is in manual digging pile construction
In be a kind of common, easy, preferable retaining wall mode of effect.When running into drift sand, water rich strata condition, manual digging pile construction
The middle construction that superstructure steel core concrete column will be directly used in for the steel pile casting for avoiding drift sand, using the sinking steel in shoveling
The mode of pipe carries out retaining wall.Also the steel plate using certain thick bottom is rolled into circular steel casing, then using the side of static pressure or machinery
Method is pressed into and penetrates soft layer, then excavated by manual work continues except the soft layer in steel pile casting and according to a conventional method to excavate downwards, protects
Wall is completed until casting concrete.It is main using by circular steel lid during being pressed into using static pressure and mechanical means
Method of the method for sand pocket by steel pile casting static pressure in place is symmetrically and evenly banked up on plate；Mechanical means is mainly used excavator
Scraper bowl be placed in the center of circular steel deck-plate compressed steel casing vertically downward, make that steel pile casting is vertical, slowly sinks, until design is deep
Degree, the method for press-fitting of above two steel pile casting is to mechanical and place more demanding.
In some special occasions, for example construction is artificial on narrow space, activity duration limited existing railway operation line
During caisson, the method for press-fitting of these above-mentioned steel pile castings is applied due to needing using big machinery or taking large-scale place etc.
Work method is often limited, it is impossible to is met the requirements.At the same time steel pile casting degree control be also construction heavy difficult point, and it is often
Large scale equipment is needed just to can guarantee that effect.
The content of the invention
The purpose of the present invention runs line, excavated by manual work mainly for solving under water rich strata geological conditions, close to existing railway
Hole stake is passed through in layer of sand, Extra-fine sand geology work progress, prevents that stake holes generation from gushing sand, burst sand, collapse hole, degree control etc. are asked
Topic, to achieve the purpose that quick, safe efficient, high quality carries out man-made digging pile mould-pipe, it is ensured that construction safety, and then provide
A kind of manual digging pile construction method based on self leveling backpressure device.
The present invention adopts the following technical scheme that：
A kind of manual digging pile construction method based on self leveling backpressure device, the construction procedure of caisson are：
The first step, routinely construction technology excavate, before manual digging pile construction passes through water rich strata, when bottom hole absolute altitude away from
When beyond the 50cm of the stratum, stop drilling and excavate；
Second step, using self leveling backpressure device by it is identical with drilled pile diameter, highly be 50~100cm steel
Casing is pressed into below water rich strata bottom surface 30cm, then continues to be excavated to projected depth according to conventional construction method.
The specific process of press in of the steel pile casting is：Back-pressure leveling I-steel and lower part back-pressure I-steel are formed first
Counter-pressure system fixes I-steel with top and keeps zero degree angle, after the certain stroke of the downward jacking of jack, is put using horizon rule
It is placed on steel pile casting, checks the angle deviating situation of steel pile casting；Then adjust counter-pressure system and top is fixed between I-steel
Angle, continues to make the downward jacking back-pressure steel pile casting of jack；The verticality of horizon rule examination steel pile casting is recycled, and adjusts back-pressure
The angle that system and top are fixed between I-steel carries out back-pressure to steel pile casting, until steel pile casting meets verticality requirement.
It is 45 ゜ or 90 ゜ that the single that the counter-pressure system and top are fixed between I-steel, which adjusts the angle,.The list of counter-pressure system
Secondary press-in stroke（The single jacking stroke of jack）No more than the 1/3 of steel pile casting height.
Wherein, the single jacking stroke of steel pile casting press-in starting stage jack（That is the single compression distance of steel pile casting）One
As be no more than steel pile casting height 1/3, construction site can according to steel pile casting height 20% control.Specific jacking stroke can foundation
The departure degree of field geology conditions and steel pile casting adjusts, but basic principle is after there is deviation situation, can in time by adjusting
Steel pile casting verticality.
When the thickness of water rich strata is more than a steel pile casting height, steel pile casting is saved using every force feed one, drilled pile excavates
Certain altitude, reserves certain altitude, then carries out prefabricated steel pile casting force feed, and circulation force feed, excavate drilled pile, until being excavated to design
Depth.That is the single excavation height of drilled pile should be less than the single compression distance of steel pile casting（The single jacking stroke of jack）,
Making steel pile casting lower end, insertion has been excavated below the bottom of drilled pile all the time, is formed supporting to the excavation that continues of drilled pile, is ensured steel
The advance support effect of casing.
I-steel, back-pressure leveling I-steel are fixed in the top that self leveling backpressure device includes from top to bottom arranging
With lower part back-pressure I-steel, top, which is fixed I-steel and connected with back-pressure leveling I-steel by axis pin, makes top fixation I-steel can
Rotate around axis pin and moved along axis pin length direction；Back-pressure leveling I-steel and lower part back-pressure I-steel form counter-pressure system and anti-
Some jack are equipped between pressure leveling I-steel and lower part back-pressure I-steel, top is fixed on the both ends and steel pile casting of I-steel
Pre-embedded bolt connecting plate connection, the bottom surface of lower part back-pressure I-steel acts on steel pile casting top surface.
The lumps of wood backing plate of some support jacks is additionally provided between the back-pressure leveling I-steel and lower part back-pressure I-steel,
The both ends of lumps of wood backing plate are fixed by vertically arranged fixation Bolted angle connection respectively, and the upper and lower ends of fixed angle steel pass through lateral connection
Ear fixes I-steel with top, lower part back-pressure I-steel is flexibly connected.
The lumps of wood backing plate fixes the width phase of I-steel, back-pressure leveling I-steel and lower part back-pressure I-steel with top
Deng.
The length of the fixed angle steel be more than top fix maximum vertical between I-steel and lower part back-pressure I-steel away from
From and at least grow 40cm.
The length of the lower part back-pressure I-steel and the outside diameter of steel pile casting are equal in magnitude.
The center of circle of the pre-embedded bolt connecting plate and steel pile casting is located along the same line.
The present invention has the following technical effect that：
1）Using the method for jack back-pressure steel pile casting in caisson, make the more traditional drop of control difficulty of steel pile casting verticality
It is low, and it can be adjusted in construction, the verticality adjustment difficulty of back-pressure steel pile casting is big in traditional caisson, or
Substantially it cannot adjust, can only rely in work progress early period and construct by rule of thumb, can solve to make close to existing railway operating line
The problem of industry place is limited, the activity duration is limited, steel pile casting degree control problem, reduces large scale equipment and large area operation
The input in place.
2）Using self leveling backpressure device and horizon rule examination steel pile casting insert state is combined, can dynamically adjust steel in due course
The verticality of casing, construction effect are good.
2）Steel pile casting construction is carried out using the device, equipment is simple, convenient for disassembly and assembly, construction less investment.
3）The fast jacking of steel pile casting can be achieved, can meet that scene with digging with branch rapid construction requirement, can effectively prevent from gushing
Sand, the generation for gushing mud and collapse hole phenomenon, security are good.
4）The back-pressure construction operation place of steel pile casting is located in caisson, and the influence for surrounding enviroment is small.
5）The equipment used in work progress is simple, and materials are extensive, easy to operate, easy processing.
Brief description of the drawings
Fig. 1 is the schematic diagram of self leveling back-pressure construction combination unit；
Fig. 2 is the installation top view of top I-steel；
Fig. 3 is the installation top view of top I-steel and leveling I-steel；
In figure：1- concrete guard walls, 2- pre-embedded bolts connecting plate, 3- lumps of wood backing plate, 4- back-pressure leveling I-steel, 5- lower parts
Back-pressure I-steel, 6- steel pile castings, 7- fix angle steel, I-steel, 9- jack, 10- caissons, 12- axis pins are fixed in 8- tops.
Embodiment
With reference to attached drawing, the embodiment of the present invention is described further：
Overall technological scheme：Before manual digging pile construction passes through the stratum such as layer of sand, Extra-fine sand, according to test pile situation and ground
Matter reconnoitres data, when bottom hole absolute altitude to such stratum certain altitude（50cm, can specifically determine according to stake footpath and water content situation）,
Stop drilling excavating.By diameter is identical with drilled pile diameter, reasonable sheet metal thickness, height（50~100cm）Steel pile casting,
Using self leveling backpressure device pressure by below steel pile casting press-in sandy strata bottom surface（30cm, reference value）, then according to routine
Construction method is excavated；If more than one casing height of sand layer thickness, can use and steel pile casting is saved per force feed one, excavate certain
Highly, certain altitude is reserved, then carries out prefabricated steel pile casting force feed, circulation force feed, excavate, until being excavated to projected depth.
The structure of self leveling backpressure device is as shown in Figure 1, mainly have I-steel, big stroke jack, I-steel
The compositions such as connecting plate, lumps of wood backing plate, fixed angle steel, horizon rule.It is mixed in the one before concrete guard wall circulation binding of construction steel pile casting
During solidifying soil retaining wall reinforcing bar, the connecting plate of symmetrical pre-buried I-steel in place, prepared screw-bolt hole on junction steel plate, pre-buried work
The center of circle of word steel connecting plate and stake is point-blank.
Wherein, I-steel is divided into top fixation I-steel, back-pressure leveling I-steel and three, lower part back-pressure I-steel.Wherein
Top fixes I-steel both ends and is welded with Bolt plate, can be connected with reserved Bolt plate；The length of I-steel is fixed to meet in top
Can be connected with pre-buried connecting plate is advisable.Back-pressure leveling I-steel is fixed I-steel by centre bore, central shaft and top and is connected,
Central shaft is connected using pin, ensures that the two with one heart, can be moved up and down, but do not slide laterally.
Lower part back-pressure I-steel is identical with the model of back-pressure leveling I-steel, and length and steel pile casting outside diameter are equal in magnitude.Under
Portion's back-pressure I-steel directly acts on steel pile casting top surface.Jacking is synchronized using two same model jack, until meeting
The requirement of steel pile casting insertion depth；After the insertion depth requirement of steel pile casting exceedes jack stroke range, using in upper and lower I-shaped
Increase lumps of wood backing plate between steel, untill steel pile casting jacking depth is met the requirements, width and the I-steel width of lumps of wood backing plate
Unanimously, lumps of wood backing plate carries out stablizing row control by being fixed on the angle steel of upper and lower I-steel both sides.Angle steel and upper and lower back-pressure I-shaped
Steel is connected using lateral connection ear, ensures that angle steel can carry out vertical direction movement, angle steel model can with the increase of lumps of wood backing plate
Determined according to actual conditions, length considers certain surplus can connect upper and lower I-steel（Reference value 40cm）It is advisable.
In process of press in, can first by the counter-pressure system that back-pressure leveling I-steel and lower part back-pressure I-steel form with it is upper
The holding zero degree angle of I-steel is fixed in portion, and after the certain stroke of jack jacking, steel pile casting is directly placed at using horizon rule
On, the angle deviating situation of steel pile casting is checked, then according to certain angle（Generally 45 ゜ or 90 ゜）, adjustment the back-pressure decorum with
The angle of I-steel is fixed on top, as shown in figure 3, back-pressure and verticality adjustment are carried out, until steel pile casting meets verticality requirement.
Steel pile casting back-pressure is constructed to projected depth, removes lumps of wood backing plate and I-steel, practical for later cycles.
Claims (7)
- A kind of 1. manual digging pile construction method based on self leveling backpressure device, it is characterised in that the construction procedure of caisson For：The first step, routinely construction technology excavate, before manual digging pile construction passes through water rich strata, when bottom hole absolute altitude is away from the ground When beyond layer 50cm, stop artificial digging pile and excavate；Second step, using self leveling backpressure device by it is identical with artificial digging pile diameter, highly be 50~100cm steel Casing（6）Below water rich strata bottom surface 30cm is pressed into, then continues to be excavated to projected depth according to conventional construction method；The steel pile casting（6）Specific process of press in be：First by back-pressure leveling I-steel（4）With lower part back-pressure I-steel（5） The counter-pressure system of composition fixes I-steel with top（8）Zero degree angle is kept, treats jack（9）After the certain stroke of downward jacking, Steel pile casting is positioned over using horizon rule（6）On, check steel pile casting（6）Angle deviating situation；Then adjust counter-pressure system with it is upper I-steel is fixed in portion（8）Between angle, continue to make jack（9）Downward jacking back-pressure steel pile casting（6）；Horizon rule is recycled to look into Test steel pile casting（6）Verticality, and adjust counter-pressure system and top and fix I-steel（8）Between angle to steel pile casting（6）Into Row back-pressure, until steel pile casting meets verticality requirement；I-steel is fixed on the top that self leveling backpressure device includes from top to bottom arranging（8）, back-pressure leveling I-steel （4）With lower part back-pressure I-steel（5）, I-steel is fixed on top（8）With back-pressure leveling I-steel（4）Pass through axis pin（12）Connection makes I-steel is fixed on top（8）Can be around axis pin（12）Rotate and along axis pin（12）Length direction moves；Back-pressure leveling I-steel（4）With Lower part back-pressure I-steel（5）Form counter-pressure system and back-pressure leveling I-steel（4）With lower part back-pressure I-steel（5）It is equipped between if Dry jack（9）, I-steel is fixed on top（8）Both ends and concrete guard wall（1）On pre-embedded bolt connecting plate（2）Connection, Lower part back-pressure I-steel（5）Bottom surface act on steel pile casting（6）Top surface.
- 2. the manual digging pile construction method according to claim 1 based on self leveling backpressure device, it is characterised in that： The counter-pressure system fixes I-steel with top（8）Between single adjust the angle be 45 ゜ or 90 ゜；The single pressure of counter-pressure system Enter stroke and be no more than steel pile casting（6）The 1/3 of height.
- 3. the manual digging pile construction method according to claim 2 based on self leveling backpressure device, it is characterised in that： When the thickness of water rich strata is more than a steel pile casting（6）During height, steel pile casting is saved using every force feed one（6）, artificial digging pile opens Certain altitude is dug, reserves certain altitude, then carry out prefabricated steel pile casting（6）Force feed, circulation force feed, excavate artificial digging pile, directly To being excavated to projected depth；Wherein, the single excavation height of hand excavation hole stake is less than steel pile casting（6）Single compression distance.
- 4. the manual digging pile construction method according to claim 3 based on self leveling backpressure device, it is characterised in that： The back-pressure leveling I-steel（4）With lower part back-pressure I-steel（5）Between be additionally provided with some support jacks（9）Lumps of wood backing plate （3）, lumps of wood backing plate（3）Both ends respectively by vertically arranged fixation angle steel（7）Connection is fixed, fixed angle steel（7）Up and down two I-steel is fixed in end by lateral connection ear and top（8）, lower part back-pressure I-steel（5）It is flexibly connected.
- 5. the manual digging pile construction method according to claim 4 based on self leveling backpressure device, it is characterised in that： The lumps of wood backing plate（3）I-steel is fixed with top（8）, back-pressure leveling I-steel（4）With lower part back-pressure I-steel（5）Width It is equal.
- 6. the manual digging pile construction method according to claim 5 based on self leveling backpressure device, it is characterised in that： The fixed angle steel（7）Length be more than top fix I-steel（8）With lower part back-pressure I-steel（5）Between maximum vertical away from From and at least grow 40cm.
- 7. the manual digging pile construction method according to claim 6 based on self leveling backpressure device, it is characterised in that： The lower part back-pressure I-steel（5）Length and steel pile casting（6）Outside diameter it is equal in magnitude.
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| CN201610572089.8A CN106087996B (en) | 2016-07-20 | 2016-07-20 | Manual digging pile construction method based on self leveling backpressure device |
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| CN106087996B true CN106087996B (en) | 2018-05-11 |
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Families Citing this family (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107083771B (en) * | 2017-06-15 | 2018-10-26 | 中铁六局集团天津铁路建设有限公司 | A kind of drilling construction method of artificial digging pile |
| CN108951614B (en) * | 2018-08-02 | 2023-12-01 | 长江勘测规划设计研究有限责任公司 | Socket type bored pile steel pile casing and construction method thereof |
| CN109403953B (en) * | 2018-11-16 | 2022-10-14 | 中铁三局集团有限公司 | Device and method for quickly and accurately measuring perpendicularity of drilled pile body |
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