CN1858364A - Secondary pouring method for preventing broken pile accident in pile pouring construction - Google Patents
Secondary pouring method for preventing broken pile accident in pile pouring construction Download PDFInfo
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- CN1858364A CN1858364A CN 200510067997 CN200510067997A CN1858364A CN 1858364 A CN1858364 A CN 1858364A CN 200510067997 CN200510067997 CN 200510067997 CN 200510067997 A CN200510067997 A CN 200510067997A CN 1858364 A CN1858364 A CN 1858364A
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Abstract
The twice pouring method for preventing broken pile accident in pile pouring construction includes the following steps: 1. setting one first pouring guide pipe and one second pouring guide pipe in the construction site; 2. hoisting the blocked first pouring guide pipe immediately outside the pile pouring well; 3. measuring the distance between the concrete surface inside the pouring well to the work plane, inserting the second pouring guide pipe to below the concrete surface for the second pouring; 4. filling the hopper with the first batch of concrete; 5. opening the valve of the hopper for the second pouring, and lowering the second pouring guide pipe by 0.5-1 m for further pouring; and 6. further pouring until reaching the required design elevation.
Description
Technical field
The present invention relates to a kind of method that prevents that fracture accident takes place in the filling pile construction, this method can solve plugging, pipe laying and card pipe fault, prevents that fracture accident from taking place, and simple to operate, cost is lower.
Background technology
Chinese patent 98116992.9 discloses a kind of castinplace pile, this castinplace pile is the concrete enlarged footing that forms hole enlargement on the different depth position of isometrical steel concrete solid pile, also can be provided with at least two grout pipes that insert the grout pipe of soil layer at the bottom of directing reach and direct reach each concrete enlarged footing bottom, and form the permeation enhanced net of grouting along stake week, its job practices is to form stake hole and enlarged footing hole from top to bottom piecemeal with drill bit and reaming bit, reinforcing cage and grout pipe are set again, behind the concrete perfusion pile, through grout pipe high pressure injection from bottom to top cement grout, above-mentioned concrete enlarged footing and reinforcement net have improved the bearing capacity of stake, can be by reducing the stake footpath, high and the stake number of stake reduces construction cost.Because this castinplace pile adopts the construction of underwater grouting method, tends to run into the phenomenon of plugging, pipe laying and card pipe in the process of concrete under priming petock, and causes taking place fracture accident thus.
The measure of in the past handling plugging is to adopt to carry conduit up and down, and form vibrator or stock are inserted the method for smashing and dredged.When the more serious plugging situation that takes place to get rid of, conduit must be proposed a stake hole and clear up, and then insert heavily and irritate, heavily usually cause the generation of fracture accident in the process of Guaning.Therefore, need to propose a kind of secondary pouring method that prevents that fracture accident takes place in the filling pile construction.
Summary of the invention
The object of the present invention is to provide a kind of secondary pouring method that prevents that fracture accident takes place in the filling pile construction, this method can solve the plugging fault, prevents that fracture accident from taking place, and simple to operate, cost is lower.
The objective of the invention is to be realized by following technical proposals: a kind of secondary pouring method that prevents that fracture accident takes place in the filling pile construction is characterized in that:
A, a perfusion cannula of a cover and a cover secondary pouring conduit are set at the filling pile construction scene;
B, when a perfusion cannula generation plugging, immediately this perfusion cannula is lifted out outside the castinplace pile wellhole;
Concrete face in C, the measurement castinplace pile wellhole is determined the secondary pouring catheter length to the distance of work plane according to this distance, and described secondary pouring catheter length l should meet calculating formula l=l
1+ l
2+ l
3Then the secondary pouring conduit is installed in the castinplace pile wellhole and prepares secondary pouring, following 0.5～1 meter of the interior concrete face of described wellhole should be inserted in described secondary pouring conduit bottom;
D, put into first batch of concrete in hopper, the volume of described first batch of concrete should meet calculating formula:
V≥πD
2/4*(H
1+H
2)+πd
2/4*h
1+πd
2/4；
E, open hopper valve and carry out first batch of concrete pouring in the secondary pouring operation,, immediately the secondary pouring conduit is reduced by 0.5～1 meter downwards, continue the continous pouring concrete then when first batch of concrete falls behind down;
F, stop perfusion when high when the perfusion concrete reaches a top mark, described stake top mark height should be higher than design elevation.
Compared with the prior art the present invention has following advantage:
1,, prevents that fracture accident from taking place because the present invention is provided with the secondary pouring conduit at the filling pile construction scene, and the plugging fault that can get rid of a filling process immediately enters the secondary pouring operation.
2, method of the present invention is simple to operate, and cost is lower.
Description of drawings
The invention will be further described below in conjunction with drawings and Examples.
Fig. 1, secondary pouring conduit scheme of installation of the present invention
Fig. 2, first batch of concrete quantity of the present invention are calculated reference diagram
The specific embodiment
Embodiment one:
A kind of secondary pouring method that prevents that fracture accident takes place in the filling pile construction, the concrete operations step is:
A, a perfusion cannula of a cover and a cover secondary pouring conduit are set at the filling pile construction scene; Described perfusion cannula is conventional conduit.Use a perfusion cannula during pouring construction earlier.
B, when a perfusion cannula generation plugging, can use conventional mode to handle the plugging section, in the time can not getting rid of the plugging segment fault, immediately this perfusion cannula is lifted out outside the castinplace pile wellhole;
C, the conventional measurement means of use are measured the distance of the interior concrete face of castinplace pile wellhole to work plane, and according to the length of the definite secondary pouring conduit of this distance, described secondary pouring catheter length l should meet calculating formula l=l
1+ l
2+ l
3Then the secondary pouring conduit is installed in the castinplace pile wellhole and prepares secondary pouring, following 0.5～1 meter of the interior concrete face of described wellhole should be inserted in described secondary pouring conduit bottom.Referring to Fig. 1, in the present embodiment, l
1Be the spacing of work plane 3 to secondary pouring conduit 2 tops, i.e. length in reserve, 0.5～1 meter of span.l
2Be the spacing (concrete face 6 is meant the concrete face position when the plugging fault takes place) of the concrete face 6 of work plane to castinplace pile wellhole 4, adopt actual measured value, long measure rice.L
3Be the spacing (conduit bottom 7 residing positions be meant secondary pouring conduit for the first time insert the position of concrete face) of the interior concrete face of castinplace pile wellhole to secondary pouring conduit bottom 7,0.5～1 meter of span.
D, put into first batch of concrete in hopper 1, the volume of described first batch of concrete should meet calculating formula:
V≥πD
2/4*(H
1+H
2)+πd
2/4*h
1+πd
2/4；
Referring to Fig. 2, in the present embodiment, D is the castinplace pile well diameter, H
1Be castinplace pile wellhole bottom surface to secondary pouring conduit bottom spacing, value is 0 in this formula, H
2Be the following degree of depth of the embedding first concrete face in secondary pouring conduit bottom, value is 0.5 meter (this degree of depth does not comprise the L among Fig. 1 in this formula
3), d is the secondary pouring catheter diameter.h
1Be that concrete reaches buried depth H in the castinplace pile wellhole
2The time, the required height of concrete column equilibration conduit external pressure in the conduit, i.e. h
1=H
Wγ
W/ γ
CIn addition, the concrete post height in the secondary pouring conduit should increase by 1 meter.The volume of first batch of concrete also can calculate with reference to the 6.5.4 formula of the 44th page of highway bridge and culvert construction technique normalizing JTJ041-2000, about H
W, γ
W, γ
CImplication can not be described in detail at this with reference to the 43rd page of related content of highway bridge and culvert construction technique normalizing JTJ041-2000 yet.
E, open hopper valve and carry out first batch of concrete pouring in the secondary pouring operation, when first batch of concrete falls behind down, concrete face in the castinplace pile wellhole reaches rising the position of concrete face 5, reduce by 0.5～1 meter downwards with secondary pouring conduit (in original position) this moment immediately, this moment, in-position, conduit bottom 8 was continued the continous pouring concrete then; This perfusion is to adopt conventional reperfusion mode to carry out.
F, stop perfusion when high when the perfusion concrete reaches a top mark, described stake top mark height should be higher than design elevation.
Referring to Fig. 1, in the present embodiment, the span that stake top mark height can not be routinely, and should be greater than l
3+ l
4+ l
5Summation, l wherein
3, l
40.5～1 meter of span, l
50.5 meter of value.
In the present embodiment, the quality of perfusion concrete should satisfy the pertinent regulations among the highway bridge and culvert construction technique normalizing JTJ041-2000, and in the filling process, the minimum buried depth in secondary pouring conduit bottom should be greater than l
3+ l
4+ l
5+ 0.5 meter.Super filling concrete height should be greater than l
3+ l
4+ l
5
Embodiment two:
Present embodiment is the improvement project on the basis of embodiment one, in the present embodiment, when a perfusion cannula generation plugging, immediately this perfusion cannula is lifted out outside the castinplace pile wellhole, plugging section to perfusion cannula is removed, if the plugging segment fault of this perfusion cannula is got rid of, this perfusion cannula can be used as the secondary pouring conduit.Remaining step and embodiment one are identical.
Claims (2)
1, a kind of secondary pouring method that prevents that fracture accident takes place in the filling pile construction is characterized in that:
A, a perfusion cannula of a cover and a cover secondary pouring conduit are set at the filling pile construction scene;
B, when a perfusion cannula generation plugging, immediately this perfusion cannula is lifted out outside the castinplace pile wellhole;
Concrete face in C, the measurement castinplace pile wellhole is determined the secondary pouring catheter length to the distance of work plane according to this distance, and described secondary pouring catheter length l should meet calculating formula l=l
1+ l
2+ l
3Then the secondary pouring conduit is installed in the castinplace pile wellhole and prepares secondary pouring, following 0.5～1 meter of the interior concrete face of described wellhole should be inserted in described secondary pouring conduit bottom;
D, put into first batch of concrete in hopper, the volume of described first batch of concrete should meet calculating formula:
V≥πD
2/4*(H
1+H
2)+πd
2/4*h
1+πd
2/4；
E, open hopper valve and carry out first batch of concrete pouring in the secondary pouring operation,, immediately the secondary pouring conduit is reduced by 0.5～1 meter downwards, continue the continous pouring concrete then when first batch of concrete falls behind down;
F, stop perfusion when high when the perfusion concrete reaches a top mark, described stake top mark height should be higher than design elevation.
2, secondary pouring method according to claim 1, it is characterized in that: when a perfusion cannula generation plugging, immediately this perfusion cannula is lifted out outside the castinplace pile wellhole, plugging section to perfusion cannula is removed, if the plugging segment fault of this perfusion cannula is got rid of, this perfusion cannula can be used as the secondary pouring conduit.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 200510067997 CN1858364A (en) | 2005-05-08 | 2005-05-08 | Secondary pouring method for preventing broken pile accident in pile pouring construction |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 200510067997 CN1858364A (en) | 2005-05-08 | 2005-05-08 | Secondary pouring method for preventing broken pile accident in pile pouring construction |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN1858364A true CN1858364A (en) | 2006-11-08 |
Family
ID=37297315
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 200510067997 Pending CN1858364A (en) | 2005-05-08 | 2005-05-08 | Secondary pouring method for preventing broken pile accident in pile pouring construction |
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Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101871211A (en) * | 2010-07-13 | 2010-10-27 | 武汉一冶交通工程有限责任公司 | Wet pile extension method for cast-in place pile |
| CN102561355A (en) * | 2012-02-16 | 2012-07-11 | 广东省六建集团有限公司 | Method for treating burst and jam of bored pile guide pipe |
| CN104153361A (en) * | 2014-08-25 | 2014-11-19 | 中国十七冶集团有限公司 | Underground pile splicing construction method of prestressed concrete pipe pile |
| CN105986577A (en) * | 2015-02-02 | 2016-10-05 | 山东宇通路桥集团有限公司 | Plugging device for secondary underwater concrete pipe insertion |
| CN111733823A (en) * | 2020-06-15 | 2020-10-02 | 中冶地集团西北岩土工程有限公司 | Grouting pipe burying structure and broken pile processing method in cast-in-situ bored pile pouring process |
| CN112962583A (en) * | 2021-01-27 | 2021-06-15 | 中国建筑一局(集团)有限公司 | Method for quickly connecting broken pile of rotary drilling cast-in-place pile |
-
2005
- 2005-05-08 CN CN 200510067997 patent/CN1858364A/en active Pending
Cited By (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101871211A (en) * | 2010-07-13 | 2010-10-27 | 武汉一冶交通工程有限责任公司 | Wet pile extension method for cast-in place pile |
| CN101871211B (en) * | 2010-07-13 | 2011-09-21 | 中国一冶集团有限公司 | Wet pile extension method for cast-in place pile |
| CN102561355A (en) * | 2012-02-16 | 2012-07-11 | 广东省六建集团有限公司 | Method for treating burst and jam of bored pile guide pipe |
| CN104153361A (en) * | 2014-08-25 | 2014-11-19 | 中国十七冶集团有限公司 | Underground pile splicing construction method of prestressed concrete pipe pile |
| CN105986577A (en) * | 2015-02-02 | 2016-10-05 | 山东宇通路桥集团有限公司 | Plugging device for secondary underwater concrete pipe insertion |
| CN105986577B (en) * | 2015-02-02 | 2017-12-29 | 山东宇通路桥集团有限公司 | The secondary intubation plugging device of underwater concrete |
| CN111733823A (en) * | 2020-06-15 | 2020-10-02 | 中冶地集团西北岩土工程有限公司 | Grouting pipe burying structure and broken pile processing method in cast-in-situ bored pile pouring process |
| CN112962583A (en) * | 2021-01-27 | 2021-06-15 | 中国建筑一局(集团)有限公司 | Method for quickly connecting broken pile of rotary drilling cast-in-place pile |
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