CN105714760B - A kind of no-arbitrary pricing shakes close method for processing foundation - Google Patents
A kind of no-arbitrary pricing shakes close method for processing foundation Download PDFInfo
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- CN105714760B CN105714760B CN201610062145.3A CN201610062145A CN105714760B CN 105714760 B CN105714760 B CN 105714760B CN 201610062145 A CN201610062145 A CN 201610062145A CN 105714760 B CN105714760 B CN 105714760B
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- Prior art keywords
- steel pipe
- close
- sand
- shakes
- soil
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Classifications
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- E—FIXED CONSTRUCTIONS
- E02—HYDRAULIC ENGINEERING; FOUNDATIONS; SOIL SHIFTING
- E02D—FOUNDATIONS; EXCAVATIONS; EMBANKMENTS; UNDERGROUND OR UNDERWATER STRUCTURES
- E02D3/00—Improving or preserving soil or rock, e.g. preserving permafrost soil
- E02D3/02—Improving by compacting
- E02D3/08—Improving by compacting by inserting stones or lost bodies, e.g. compaction piles
Abstract
Shaken close method for processing foundation the invention discloses a kind of no-arbitrary pricing, suitable for non-cohesive soil, it is characterised in that the treating method comprises following steps：Some holes are opened up in a steel pipe partial region, close the steel pipe bottom；The steel pipe sinking is entered into designated depth in ground；Open the steel pipe bottom, vibration staying for a period of time, the base until the completely upper lift-off of the steel pipe is turned up the soil, forms shake close sand pile and its peripheral close zone of influence that shakes after often above carrying one section of setpoint distance.It is an advantage of the invention that method for processing foundation cost is low, easy for construction and short time limit, efficiency high, can shake thickly base sand, eliminate the result of sand liquefaction, no-arbitrary pricing during the close sand that shakes, compared with conventional vibroflotation sand pile technique, can save construction costs more than 30%.
Description
Technical field
The invention belongs to foundation treatment technology field, and in particular to one kind is applied to silty soil, sandy soil and gravelly soil
No-arbitrary pricing shake close method for processing foundation.
Background technology
With Chinese Economy Development, increasing coastal cities start to reclaim land from the sea, to meet house and industrial land
Demand, and the foundation soil reclaimed land from the sea is often loose hydraulic fill sand, it is poor that liquefaction, bearing capacity easily occurs, it is impossible to directly work
For the ground of building, currently used method for processing foundation include changing fill out, the processing side such as strong rammer and vibro densification sand pile processing
Method.But when being handled using above-mentioned conventional method for processing foundation hydraulic fill sand ground, input cost height, work often be present
Number of drawbacks and the deficiencies such as the phase is long, efficiency of construction is relatively low, stiffening basic ground effect is poor.Thus, a kind of cost is low, construction party
Just construction technology needs to be proposed.
The content of the invention
According to the deficiencies of the prior art described above, It is an object of the present invention to provide a kind of no-arbitrary pricing shakes close basement process side
Method, the processing method make ground sand flow into steel through hole by ground retain a percentage of the total profits for the enterprise's own use shaking the steel pipe with hole
In pipe, so as to form the close zone of influence that shakes of shake close sand pile and its periphery.
The object of the invention is realized and completed by following technical scheme：
A kind of no-arbitrary pricing shakes close method for processing foundation, suitable for non-cohesive soil, it is characterised in that the treating method comprises
Following steps：Some holes are opened up in a steel pipe partial region, close the steel pipe bottom；The steel pipe sinking is entered ground
Designated depth in base；Open the steel pipe bottom, after often above carrying one section of setpoint distance vibration staying for a period of time, until the steel pipe
Completely upper lift-off is turned up the soil base, forms the close zone of influence that shakes of shake close sand pile and its periphery.
The steel pipe bottom is one kind in tear-away formula pile top, opening and closing type closure door.
Some holes are located on the steel pipe below foundation surface in 1~2m altitude ranges.
The speed that the steel pipe sinks is 0.5~2m/min.
Enter after by the steel pipe sinking in ground after designated depth, vibration staying 1-9 minutes.
When the height of sand reaches foundation surface height in steel pipe described in vibration staying, the steel pipe is above carried, often above carries one section
After setpoint distance vibration staying for a period of time, the base until completely upper lift-off is turned up the soil.
It is an advantage of the invention that method for processing foundation cost is low, easy for construction and short time limit, efficiency high, can shake thickly base
Sand, the result of sand liquefaction is eliminated, no-arbitrary pricing during the close sand that shakes, compared with conventional vibroflotation sand pile technique, work can be saved
Journey cost more than 30%.
Brief description of the drawings
Fig. 1 is to be shaken the schematic diagram of thickly base in the present invention by vibrating steel-pipe pile；
Fig. 2 is the partial schematic diagram of hole on steel pipe in the present invention；
Fig. 3 is that some close sand piles that shake of being constructed in the present invention shake the floor map of thickly base；
Fig. 4 is the A-A diagrammatic cross-sections in Fig. 3 of the present invention；
Fig. 5 is the schematic diagram that steel pipe bottom uses opening and closing type closure door in the present invention.
Embodiment
The feature of the present invention and other correlated characteristics are described in further detail by embodiment below in conjunction with accompanying drawing, with
It is easy to the understanding of technical staff of the same trade：
Such as Fig. 1-4, mark 1-7 is respectively in figure：Steel pipe 1, hole 2, taper pile top 3, the close zone of influence 4 that shakes, sand 5, shake
Close sand pile 6, closure door 7.
Embodiment 1：As Figure 1-5, the present embodiment shakes close method for processing foundation more particularly to a kind of no-arbitrary pricing, is applied to
Silty soil, sandy soil and gravelly soil, specifically comprise the following steps：
（1）According to the engine request of pending ground, from diameter and the suitable steel pipe 1 of height, the part on steel pipe 1
Region uniformly opens up some holes 2 being used for into sand, and the regional area refers to sink in ground after designated depth after steel pipe 1,
The region of steel pipe 1 in 1~2m altitude ranges below earth's surface；Simultaneously steel pipe 1 lower port it is detachable installation by reinforced concrete
The prefabricated taper pile top 3 of soil, is blocked, while play sinking guide effect with the lower port to steel pipe 1；
（2）Steel pipe 1 is sunk in sand 5 by using the mode of vibration of vibration hammer or manipulator, subsidence velocity control exists
0.5~2m/min, to ensure enough radiuses of influence in ground sand 5；During steel pipe 1 sinks, manage outer sand 5 and exist
Shake and flowed into through hole 2 in steel pipe 1 under momentum effect, after by the sinking of steel pipe 1 to projected depth, several minutes of vibration staying（1~9 minute,
According to the difference of soil property, different load times is selected, to reach the soil property compaction rate of design requirement）Shallow-layer sand flow is promoted to enter
In steel pipe 1, to ensure that it is close that the sand of 1 inside and outside scope of steel pipe is further shaken, taper pile top 3 comes off under exciting force effect to be stayed
At stake bottom；
（3）When sand-pack height in steel pipe 1 and highly equal outside sand 5, stop the vibration staying in previous step, by steel pipe
1 above carries 0.5m, 35~45s of vibration staying；Steel pipe 1 is above carried into 0.5m, 35~45s of vibration staying again；And so on, wait to carry to shallow-layer sand
After 5 away from earth's surface 2m depth boundses, vibration staying 60s after 0.5m is often above carried, and so on, until steel pipe 1 deviates from the soil body, to ensure steel pipe
The sand compactness of 1 inside and outside scope, so as to form close sand pile 6 and its periphery close zone of influence 4 that shakes of one week that shakes, shake the close zone of influence 4
Scope be the 1-3 rice scopes shaken outside close sand pile 6, specifically with exciting force size, above carry load time length, soil condition and
Diameter of steel tube is relevant；
（4）Next position is moved to, and presses above-mentioned steps（1）-（3）The construction of middle method is shaken close sand pile 6 and its periphery one week
Shake the close zone of influence 4；And so on, until stake positions all as shown in Figure 3,4 is completed, so as to effectively improve foundation bearing capacity and disappear
Except sand liquefaction.
Embodiment 2：As shown in Fig. 2,3,5, the present embodiment shakes close method for processing foundation more particularly to a kind of no-arbitrary pricing, is applicable
In silty soil, sandy soil and gravelly soil, specifically comprise the following steps：
（1）According to the engine request of pending ground, from diameter and the suitable steel pipe 1 of height, the part on steel pipe 1
Region uniformly opens up some holes 2 being used for into sand, and the regional area refers to sink in ground after designated depth after steel pipe 1,
The region of steel pipe 1 in 1~2m altitude ranges below earth's surface；While the closure door 7 of lower port one opening and closing type of installation in steel pipe 1,
Closure door 7 can be the rotatable folding closure door of single open-type or double-open type, and closure door 7 can be to the lower port of steel pipe 1 during sinking
Blocked, above carrying process middle seal door 7 then can automatic Unscrew under gravity；
（2）Steel pipe 1 is sunk in sand 5 by using the mode of vibration of vibration hammer or manipulator, subsidence velocity control exists
0.5~2m/min, to ensure enough radiuses of influence in ground sand 5；Steel pipe 1 sink during, closure door 7 closure with
The lower port of steel pipe 1 is blocked, outer sand 5 is managed and is flowed under momentum effect of shaking through hole 2 in steel pipe 1, treated the sinking of steel pipe 1
To projected depth, several minutes of vibration staying（1~9 minute, according to the difference of soil property, different load times is selected, to reach design
It is required that soil property compaction rate）Shallow-layer sand flow is promoted to enter in steel pipe 1, to ensure that the sand of 1 inside and outside scope of steel pipe is further shaken
It is close；
（3）When sand-pack height in steel pipe 1 and highly equal outside sand 5, stop the vibration staying in previous step, by steel pipe
1 above carries 0.5m, and closure door 7 is kept it turned under gravity, 35~45s of vibration staying；Steel pipe 1 is above put forward into 0.5m, vibration staying 35 again
~45s；And so on, after above carry to shallow-layer sand 5 away from earth's surface 2m depth boundses after, often above carry vibration staying 60s after 0.5m, so it is past
It is multiple, until steel pipe 1 deviates from the soil body, to ensure the sand compactness of 1 inside and outside scope of steel pipe, so as to form the close sand pile 6 and its outer of shaking
The close zone of influence 4 that shakes of one week is enclosed, the scope for the close zone of influence 4 that shakes is the 1-3 rice scopes shaken outside close sand pile 6, specifically big with exciting force
It is small, above to carry load time length, soil condition and diameter of steel tube relevant；
（4）Next position is moved to, and presses above-mentioned steps（1）-（3）The construction of middle method is shaken close sand pile 6 and its periphery one week
Shake the close zone of influence 4；And so on, until all piles position as shown in Figure 3 is completed, so as to effectively improve foundation bearing capacity and eliminate
Sand liquefaction.
Claims (3)
- The close method for processing foundation 1. a kind of no-arbitrary pricing shakes, suitable for non-cohesive soil, it is characterised in that the treating method comprises as Lower step：Some holes are opened up in a steel pipe partial region, close the steel pipe bottom；The steel pipe bottom is tear-away One kind in formula pile top, opening and closing type closure door；The steel pipe sinking is entered into designated depth in ground, vibration staying 1-9 minutes；Treat vibration staying When the height of sand reaches foundation surface height in the steel pipe, the steel pipe bottom is opened, the steel pipe is above carried, often above carries Vibration staying for a period of time, the base until the completely upper lift-off of the steel pipe is turned up the soil, forms shake close sand pile and its periphery after one section of setpoint distance The close zone of influence that shakes.
- The close method for processing foundation 2. a kind of no-arbitrary pricing according to claim 1 shakes, it is characterised in that some hole positions In on the steel pipe below foundation surface in 1~2m altitude ranges.
- The close method for processing foundation 3. a kind of no-arbitrary pricing according to claim 1 shakes, it is characterised in that what the steel pipe sank Speed is 0.5~2m/min.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610062145.3A CN105714760B (en) | 2016-01-29 | 2016-01-29 | A kind of no-arbitrary pricing shakes close method for processing foundation |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610062145.3A CN105714760B (en) | 2016-01-29 | 2016-01-29 | A kind of no-arbitrary pricing shakes close method for processing foundation |
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| CN105714760B true CN105714760B (en) | 2018-02-23 |
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| CN106968235B (en) * | 2017-05-10 | 2018-10-26 | 广州市城市规划勘测设计研究院 | A kind of soil body encryption device and method |
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN100350103C (en) * | 2003-01-23 | 2007-11-21 | 上海国际港务（集团）股份有限公司 | Filling free vibroflotation method |
| KR100994398B1 (en) * | 2008-03-17 | 2010-11-16 | 에이원스틸(주) | A process of steel pipe post and the head armature for a pondside strengthening |
| CN101936000A (en) * | 2010-08-27 | 2011-01-05 | 常熟市浩通市政工程有限公司 | Anti-seismic treatment method of liquefied sand foundation |
| CN102561304B (en) * | 2012-02-27 | 2013-12-11 | 陕西建工集团第六建筑工程有限公司 | Method for constructing non-filled vibration-compacted sand piles on silty-fine sand foundation |
| CN104790373B (en) * | 2015-05-06 | 2017-07-28 | 中化岩土集团股份有限公司 | The closely knit method of immersed tube exciting |
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