CN101161947A - Integration method of lagging pile and dewatering well for foundation ditch support - Google Patents
Integration method of lagging pile and dewatering well for foundation ditch support Download PDFInfo
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- CN101161947A CN101161947A CNA2007100126387A CN200710012638A CN101161947A CN 101161947 A CN101161947 A CN 101161947A CN A2007100126387 A CNA2007100126387 A CN A2007100126387A CN 200710012638 A CN200710012638 A CN 200710012638A CN 101161947 A CN101161947 A CN 101161947A
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- sleeve
- hole
- rubble
- annular seal
- lagging pile
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Abstract
The invention belongs to the groundstill foundation work technical field and relates to a method integrating retaining piles and a dewatering well in the supporting system with piled anchors. The technical proposal of the invention mainly comprises the following three parts: the first part is mainly about drilling holes and putting gravel (1) to the bottom of the holes; the second part is mainly about a sleeve and an annular sealing structure, with the annular seal structure connected with the bottom of the sleeve and put into the hole together with the sleeve; the third part is about the reinforced concrete (6) between the sleeve and the wall of the hole and is the strained part. The invention has the advantages of a safe and reliable supporting system, low manufacturing cost and short working period. Because the retaining piles and the dewatering well are constructed at the same time, the construction procedures are reduced, a large amount of construction material is saved, thereby reducing the construction cost greatly and shortening the construction period.
Description
Technical field
The invention belongs to the ground foundation engineering technical field, relate to the deep-foundation pit engineering that adopts the pile-anchor supporting system construction, specially refer to a kind of the method for lagging pile and the unification of precipitation well.
Background technology
At present, in the deep-foundation pit engineering that adopts the pile-anchor supporting system construction, lagging pile and precipitation well are separately to construct.Lagging pile and precipitation well all will be distinguished borehole like this, and workload is bigger, and handy more constructional materials, and corresponding cost is also high.
Summary of the invention
The purpose of this invention is to provide a kind ofly,, reach the reduction cost to solve in lagging pile and precipitation well are constructed respectively shortcomings such as cost height, operation are many, long in time limit the method for lagging pile and precipitation well unification, and simplification working procedure and the purpose of reduction of erection time.
Technical solution of the present invention mainly comprises three parts: first mainly is boring, place rubble at the bottom of the hole; Second portion mainly is made up of sleeve pipe and ring packing structure, and the ring packing structure is connected sleeve bottom and sleeve pipe is put into the hole together; Third part is the steel concrete between sleeve pipe and the hole wall, is the force part.
Effect of the present invention and benefit are:
1. safe and reliable.The present invention is arranged on the lagging pile the inside with the precipitation well, calculates flexural strength by net sectional area when designing and calculating, can guarantee the safety of foundation ditch.
2. cost is low.The present invention lumps together construction to lagging pile and precipitation well, has reduced the expense of setting up the precipitation well separately, saves construction costs about 1/3rd.
3. the duration is short.The present invention has saved a large amount of borehole work owing to need not set up the precipitation well separately, has simplified working procedure, has shortened the construction period.
Description of drawings
Fig. 1 is one of whole generalized section of the present invention.Lagging pile and precipitation well have been constructed and have been finished among the figure, but foundation ditch does not also have excavation.
Fig. 2 is two of a whole generalized section of the present invention.Foundation ditch has excavated the hole design elevation at the end among the figure, and pile-anchor retaining is also finished.
Fig. 3 is the generalized section at the bottom of the stake of the present invention.
Fig. 4 is a lagging pile cross sectional representation of the present invention.
Among Fig. 1～Fig. 4: 1 rubble; 2 ring seal structures; 3 sleeve pipes; 4 reinforcing cages; 5 cast-in-situ concretes; 6 lagging piles; 7 precipitation wells; 8 anchor cables (bar); 9 ground; 10 substrates.
The specific embodiment
Below in conjunction with technical scheme and accompanying drawing, be described in detail the specific embodiment of the present invention.
The present invention unifies lagging pile and precipitation well, its schematic diagram such as Fig. 1～and shown in Figure 4, its concrete implementation step is as follows:
Excavate the following 200mm～1000mm of projected depth at the bottom of the stake by the aperture of design, put into rubble to the stake projected depth at the end;
Sleeve and annular seal are linked together; The diameter of sleeve is exactly the diameter of precipitation well; The outer ring diameter and the aperture of annular seal are suitable, the equal diameters of interior ring diameter and sleeve; Then sleeve and annular seal are put into the hole together, and the location;
The present invention design be used for the pile-anchor supporting system syndeton, its main feature is:
Sleeve pipe be the hole wall of dewatering well be again the interior ring template of lagging pile. Circulating device has guaranteed concreting After do not infiltrate rubble, concrete can water closely knitly like this, simultaneously rubble can be brought into play the drainage effect. From executing Work step can find out that suddenly the present invention only needs a borehole, can satisfy two requirements of retaining wall and precipitation, has shortened Operation has been saved cost.
Claims (2)
1. the method for lagging pile that is used for pattern foundation pit supporting structure and the unification of precipitation well is characterized in that the method comprises three parts: first places rubble after the boring at the bottom of the hole; Second portion mainly is made up of sleeve pipe and ring packing structure, and the ring packing structure is connected sleeve bottom and sleeve pipe is put into the hole together; Third part is reinforcing cage and the concrete between sleeve pipe and the hole wall, is the force part.
2. a kind of lagging pile of pattern foundation pit supporting structure and method of precipitation well unification of being used for according to claim 1 is characterized in that comprising following each step:
Step 1
Excavate the following 200mm～1000mm of projected depth at the bottom of the stake by the aperture of design, put into rubble to the stake projected depth at the end;
Step 2
Sleeve and annular seal are linked together.The diameter of sleeve is exactly the diameter of precipitation well; The outer ring diameter and the aperture of annular seal are suitable, and the equal diameters of interior ring diameter and sleeve is put into the hole to sleeve and annular seal then together, and the location;
Step 3 is by designing requirement assembling reinforcement cage, then reinforcing cage put into annular space between sleeve and the hole wall;
Step 4 is toward the annular space fluid concrete between sleeve and the hole wall, and vibrates on request; Owing at the cover tube bottom annular seal is housed,, does not influence the drainage effect of rubble so be separated out between concrete and the rubble;
Step 5 can be drawn water from sleeve pipe after finishing above step, and the lagging pile concrete strength can carry out normal excavation of foundation pit after reaching desired intensity.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNA2007100126387A CN101161947A (en) | 2007-08-27 | 2007-08-27 | Integration method of lagging pile and dewatering well for foundation ditch support |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNA2007100126387A CN101161947A (en) | 2007-08-27 | 2007-08-27 | Integration method of lagging pile and dewatering well for foundation ditch support |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN101161947A true CN101161947A (en) | 2008-04-16 |
Family
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CNA2007100126387A Pending CN101161947A (en) | 2007-08-27 | 2007-08-27 | Integration method of lagging pile and dewatering well for foundation ditch support |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN101161947A (en) |
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101781888B (en) * | 2010-02-01 | 2012-01-04 | 河海大学 | Vibration sinking tube compacted gravel-concrete combined pile and construction method thereof |
| CN102535490A (en) * | 2012-03-06 | 2012-07-04 | 北京交通大学 | Method for dewatering foundation pit by using bored cast-in-place pile |
| CN102877477A (en) * | 2012-09-20 | 2013-01-16 | 中铁隧道勘测设计院有限公司 | Temporary column structure with function of dewatering well and construction method thereof |
| CN103452093A (en) * | 2013-08-30 | 2013-12-18 | 山东大学 | Compound foundation formed by serial connection of water-permeable concrete pile and gravel pile and foundation treatment method |
| CN103850260A (en) * | 2014-03-24 | 2014-06-11 | 北京城建勘测设计研究院有限责任公司 | Pile-well integration dewatering well |
| CN103911988A (en) * | 2014-04-03 | 2014-07-09 | 大连理工大学 | Novel wall protection pile for foundation pit supporting |
-
2007
- 2007-08-27 CN CNA2007100126387A patent/CN101161947A/en active Pending
Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101781888B (en) * | 2010-02-01 | 2012-01-04 | 河海大学 | Vibration sinking tube compacted gravel-concrete combined pile and construction method thereof |
| CN102535490A (en) * | 2012-03-06 | 2012-07-04 | 北京交通大学 | Method for dewatering foundation pit by using bored cast-in-place pile |
| CN102877477A (en) * | 2012-09-20 | 2013-01-16 | 中铁隧道勘测设计院有限公司 | Temporary column structure with function of dewatering well and construction method thereof |
| CN103452093A (en) * | 2013-08-30 | 2013-12-18 | 山东大学 | Compound foundation formed by serial connection of water-permeable concrete pile and gravel pile and foundation treatment method |
| CN103850260A (en) * | 2014-03-24 | 2014-06-11 | 北京城建勘测设计研究院有限责任公司 | Pile-well integration dewatering well |
| CN103850260B (en) * | 2014-03-24 | 2015-10-28 | 北京城建勘测设计研究院有限责任公司 | A kind of stake well integration dewatering well |
| CN103911988A (en) * | 2014-04-03 | 2014-07-09 | 大连理工大学 | Novel wall protection pile for foundation pit supporting |
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| C06 | Publication | ||
| PB01 | Publication | ||
| C10 | Entry into substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| C02 | Deemed withdrawal of patent application after publication (patent law 2001) | ||
| WD01 | Invention patent application deemed withdrawn after publication |
Open date: 20080416 |