CN212405119U - Bored concrete pile leaking stoppage solid hole structure - Google Patents
Bored concrete pile leaking stoppage solid hole structure Download PDFInfo
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- CN212405119U CN212405119U CN201922164047.2U CN201922164047U CN212405119U CN 212405119 U CN212405119 U CN 212405119U CN 201922164047 U CN201922164047 U CN 201922164047U CN 212405119 U CN212405119 U CN 212405119U
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Abstract
The utility model provides a bored concrete pile leaking stoppage solid hole structure, is including setting up in the bored concrete pile hole in stratum, the circumference in bored concrete pile hole is equipped with a plurality of leaking stoppage holes and solid wall hole, leaking stoppage hole with the downthehole grout that has poured into of solid wall, with bored concrete pile hole edge forms to easily leak in the stratum and easily collapse the reinforced (rfd) district in layer. The utility model is suitable for a bored concrete pile construction in gravel, cobble and limestone etc. easy collapse easily leaks the stratum, easy operation effectively avoids bored concrete pile work progress to leak thick liquid, quality problems such as hole collapse, guarantees that the bored concrete pile construction is continuous, and is smooth and easy, promotes bored concrete pile efficiency of construction, reworks after appearing quality problems in the reduction bored concrete pile pore-forming construction, has effectively guaranteed guarantee the bored concrete pile construction quality.
Description
Technical Field
The utility model relates to a geotechnical engineering technical field especially relates to a bored concrete pile leaking stoppage pore-consolidating structure.
Background
At present, with the development of economic society, the construction engineering projects of highway bridges are more and more, and cast-in-place piles are widely used in the highway bridge engineering as a mature and reliable foundation form. However, under complex geological conditions, particularly when the construction is carried out in a stratum with strong permeability such as a sand layer, a pebble layer and the like or a limestone stratum, the construction problems of slurry leakage, hole collapse and the like often exist, the non-production time is prolonged, and the construction benefit is influenced. After the construction problems such as slurry leakage and hole collapse occur, construction generally needs to be suspended, construction equipment is withdrawn according to the conditions of slurry leakage and hole collapse, and measures such as clay are thrown into the drilled hole to block a leaking layer. The general post-treatment method is time-consuming and labor-consuming, and can not ensure whether the subsequent construction of the cast-in-place pile has problems or not.
SUMMERY OF THE UTILITY MODEL
Problem to prior art existence, the utility model provides a promote bored concrete pile efficiency of construction, the bored concrete pile leaking stoppage solid hole structure of guarantee bored concrete pile construction quality.
In order to achieve the above purpose, the utility model adopts the following technical scheme:
the utility model provides a bored concrete pile leaking stoppage solid hole structure, is including setting up in the bored concrete pile hole in stratum, the circumference in bored concrete pile hole is equipped with a plurality of leaking stoppage holes and solid wall hole, leaking stoppage hole with the downthehole grout that has poured into of solid wall, with bored concrete pile hole edge forms to easily leak in the stratum and easily collapse the reinforced (rfd) district in layer.
Further, the depth of the leakage blocking hole reaches 1m below the easily-leaked and easily-collapsed layer, and the depth of the fixed wall hole penetrates through the easily-leaked and easily-collapsed layer.
Further, the upper end of the reinforcing area is 0.5m higher than the leakage-prone layer.
Further, the grout is a mixture of cement paste, an accelerator and water glass, wherein the ratio of the cement paste to the water glass is 1: 0.5-1: 1.
further, the leaking stoppage holes and the wall fixing holes are uniformly distributed on the circumference of the cast-in-place pile hole, and the leaking stoppage holes are positioned between every two adjacent wall fixing holes.
Furthermore, the number of the leakage blocking holes is three, and three wall fixing holes are arranged between every two adjacent leakage blocking holes.
Furthermore, the leakage blocking holes and the wall fixing holes are arranged in a staggered mode at intervals.
Further, if the influence radius of the grout is R, the distance between the plugging hole or the wall fixing hole and the edge of the cast-in-place pile hole is smaller than R, and the center distance between the plugging hole and the wall fixing hole is smaller than 2R.
The utility model has the advantages that:
be equipped with a plurality of leaking stoppage holes and solid wall hole at the circumference in bored concrete pile hole, the downthehole grout that pours into of leaking stoppage hole and solid wall, can form the reinforced reinforcing area of the easy layer of collapsing of easily leaking in the stratum in bored concrete pile hole edge to consolidate around the bored concrete pile, the utility model is suitable for a bored concrete pile construction in the easy layer of leaking of collapsing such as gravel, cobble and limestone, easy operation effectively avoids bored concrete pile work progress to leak thick liquid, quality problems such as hole collapse, guarantees that the bored concrete pile construction is continuous, and is smooth and easy, promotes bored concrete pile efficiency of construction, reduces to do over again after the quality problems appears in the bored concrete pile pore-forming construction, has effectively guaranteed guarantee the construction quality of bored concrete pile.
Drawings
FIG. 1 is a schematic view of the structure of the filling pile for plugging and fixing holes of the present invention;
FIG. 2 is a schematic view of the structure of the filling pile after plugging and hole-fixing;
fig. 3 is a schematic structural view of another embodiment of the leak stopping and hole fixing structure of the cast-in-place pile of the present invention;
in the figure, 1 is a bored concrete pile hole, 2 is a leak stopping hole, 3 is a wall fixing hole, 4 is a covering soil layer, 5 is a layer easy to leak and collapse and 6 is a reinforcing area, L1 is the distance between the leak stopping hole or the wall fixing hole and the edge of the bored concrete pile hole, and L2 is the center distance between the leak stopping hole and the wall fixing hole.
Detailed Description
The technical solutions in the embodiments of the present invention will be described clearly and completely with reference to the accompanying drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only some embodiments of the present invention, not all embodiments. Based on the embodiments in the present invention, all other embodiments obtained by a person skilled in the art without creative efforts belong to the protection scope of the present invention.
It should be noted that all the directional indicators (such as upper, lower, left, right, front and rear … …) in the embodiment of the present invention are only used to explain the relative position relationship between the components, the motion situation, etc. in a specific posture (as shown in the drawings), and if the specific posture is changed, the directional indicator is changed accordingly.
As fig. 1 to fig. 3, the utility model provides a bored concrete pile leaking stoppage pore-consolidating structure, including setting up in bored concrete pile hole 1 in the stratum, the circumference in bored concrete pile hole 1 is equipped with a plurality of leaking stoppage holes 2 and solid wall hole 3, and leaking stoppage hole 2 has poured the thick liquid with solid in the wall hole 3 to form easily leaking in the stratum and easily collapsing the reinforced (rfd) reinforcing area 6 of layer 5 in bored concrete pile hole 1 edge. Wherein the plugging holes 2 and the wall fixing holes 3 are uniformly distributed on the circumference of the cast-in-place pile hole 1, and the plugging holes 2 are positioned between two adjacent wall fixing holes 3. In one embodiment, three plugging holes 2 are provided, and three wall fixing holes 3 are provided between two adjacent plugging holes 2. In another embodiment, the plugging holes 2 and the wall fixing holes 3 are the same in number and are arranged at intervals in a staggered mode.
Through last bored concrete pile leaking stoppage solid pore structure can be in the easy layer 5 that collapses of leaking of bottom form reinforcing area 6, reinforcing area 6 is located the bored concrete pile around, consequently can consolidate the bored concrete pile, effectively avoids bored concrete pile work progress to leak thick liquid, the hole quality problems such as collapse, guarantees that the bored concrete pile construction is continuous, and is smooth and easy, reduces to appear in the bored concrete pile pore-forming construction quality problem back and do over again, has effectively guaranteed the pore-forming quality.
And analyzing the easily collapsed and easily leaked layer of the stratum according to the geological survey data, and determining the depths of the leaking stoppage holes 2 and the wall fixing holes 3. In this embodiment, the depth of the plugging hole 2 is 1m below the easily collapsible layer 5 of the bottom layer, and the depth of the wall fixing hole 3 penetrates through the easily collapsible layer 5. The upper end of the reinforcing area is 0.5m higher than the easily-leaked and easily-collapsed layer.
In a preferred embodiment, the grout injected into the plugging holes 2 and the wall fixing holes 3 is a mixture of cement paste, an accelerator and water glass, wherein the ratio of the cement paste to the water glass is 1: 0.5-1: 1.
before the construction of the cast-in-place pile, a grouting influence radius test is carried out, the influence radius of slurry is detected to be R, the distance between the plugging hole or the wall fixing hole and the edge of the cast-in-place pile hole is smaller than R, and the center distance between the plugging hole and the wall fixing hole is smaller than 2R.
The construction of the filling pile leaking stoppage and hole fixing structure comprises the following steps:
the method comprises the following steps: arranging and leveling the field, and performing grouting influence radius test before cast-in-place pile construction: a drilling machine is used for drilling a plurality of plugging holes 2 and wall fixing holes 3 in an on-site stratum, generally a down-the-hole drill can be selected to improve the work efficiency, then the prepared grout is injected into the plugging holes 2 and the wall fixing holes 3 through a double-liquid grouting pump, and after the grout is solidified, the minimum influence radius of the grout is detected, namely the influence radius R of the grout. In this embodiment, the minimum radius of influence of the slurry is detected by excavation or drilling.
Step two: and (4) positioning the position of the cast-in-place pile hole 1, wherein the diameter of the cast-in-place pile is D.
Step three: the method is characterized in that plugging holes 2 and wall fixing holes 3 are arranged around a cast-in-place pile hole 1, the plugging holes 2 and the wall fixing holes 3 are arranged around the cast-in-place pile hole 1 in a surrounding mode, the number of the plugging holes 2 and the wall fixing holes 3 is determined according to the slurry leakage condition of slurry on site, the distance L1 between the plugging holes 2 or the wall fixing holes 3 and the edge of the cast-in-place pile hole 1 is smaller than R, and the center distance L2 between the plugging holes 2 and the wall fixing holes 3 is smaller than 2R, so that the hole wall position is reinforced in cast-in-place pile hole forming construction.
Step four: and analyzing the easily collapsed and easily leaked layer of the stratum according to the geological survey data, and determining the depths of the leaking stoppage holes 2 and the wall fixing holes 3. In this embodiment, the depth of the plugging hole 2 is 1m below the easily collapsible layer 5 of the bottom layer, and the depth of the wall fixing hole 3 penetrates through the easily collapsible layer 5.
Step five: and (3) pressing the prepared slurry into the plugging hole 2 and the wall fixing hole 3 by using a double-liquid grouting pump, after the slurry is solidified, constructing the cast-in-place pile, and forming a reinforcing area 6 at the edge of the cast-in-place pile hole 1 so as to reinforce the easy-to-leak and easy-to-collapse layer 5. Preferably, the height of the upper end of the reinforcing area 6 is slightly higher than the easily-leaked and easily-collapsed layer 5, and the upper end of the reinforcing area enters the soil covering layer 4 by 0.5 m.
And repeating the steps to finish the reinforcing and leaking stoppage construction of the cast-in-place piles in all areas needing reinforcing and leaking stoppage.
The utility model discloses bored concrete pile leaking stoppage solid pore structure can easily collapse layer 5 to the easy hourglass around the bored concrete pile and consolidate, is applicable to the bored concrete pile construction on the easy hourglass stratum that collapses such as gravel, cobble and limestone, construction step reasonable in design, easy operation, effectively avoids bored concrete pile work progress to leak thick liquid, the hole scheduling quality problem that collapses, guarantees that the bored concrete pile construction is continuous, and is smooth and easy, and the quality problem back reworks appears in the reduction bored concrete pile pore-forming construction, has effectively guaranteed the pore-forming quality.
Although the present invention has been described in detail with reference to the preferred embodiments, it will be understood by those skilled in the art that various changes may be made and equivalents may be substituted without departing from the spirit and scope of the invention as defined in the appended claims.
Claims (7)
1. A bored concrete pile leaking stoppage solid hole structure which characterized in that includes: the grouting pile comprises a grouting pile hole arranged in a stratum, wherein a plurality of plugging holes and wall fixing holes are formed in the circumference of the grouting pile hole, grout is poured into the plugging holes and the wall fixing holes, and a reinforcing area for reinforcing the easily-leaked and easily-collapsed layer in the stratum is formed in the edge of the grouting pile hole.
2. A bored concrete pile hole plugging and fixing structure according to claim 1, wherein: the depth of the leakage blocking hole reaches 1m below the easily-leaked and easily-collapsed layer, and the depth of the fixed wall hole penetrates through the easily-leaked and easily-collapsed layer.
3. A bored concrete pile hole plugging and fixing structure according to claim 1, wherein: the upper end of the reinforcing area is 0.5m higher than the easy-to-leak and easy-to-collapse layer.
4. A bored concrete pile hole plugging and fixing structure according to claim 1, wherein: the plugging holes and the wall fixing holes are uniformly distributed on the circumference of the cast-in-place pile hole, and the plugging holes are positioned between every two adjacent wall fixing holes.
5. A bored concrete pile hole plugging and fixing structure according to claim 4, wherein: the number of the leakage blocking holes is three, and three wall fixing holes are arranged between every two adjacent leakage blocking holes.
6. A bored concrete pile hole plugging and fixing structure according to claim 4, wherein: the leakage blocking holes and the wall fixing holes are arranged in a staggered mode at intervals.
7. A bored concrete pile hole plugging and fixing structure according to claim 1, wherein: and if the influence radius of the slurry is R, the distance between the plugging hole or the wall fixing hole and the edge of the cast-in-place pile hole is smaller than R, and the center distance between the plugging hole and the wall fixing hole is smaller than 2R.
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| Application Number | Priority Date | Filing Date | Title |
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| CN201922164047.2U CN212405119U (en) | 2019-12-05 | 2019-12-05 | Bored concrete pile leaking stoppage solid hole structure |
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| CN201922164047.2U CN212405119U (en) | 2019-12-05 | 2019-12-05 | Bored concrete pile leaking stoppage solid hole structure |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110965550A (en) * | 2019-12-05 | 2020-04-07 | 中交第四航务工程局有限公司 | Method and structure for plugging and fixing hole of cast-in-place pile |
| CN115262651A (en) * | 2022-08-08 | 2022-11-01 | 上海建工集团股份有限公司 | Local self-collapsing water stopping method for underground continuous wall |
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2019
- 2019-12-05 CN CN201922164047.2U patent/CN212405119U/en active Active
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110965550A (en) * | 2019-12-05 | 2020-04-07 | 中交第四航务工程局有限公司 | Method and structure for plugging and fixing hole of cast-in-place pile |
| CN115262651A (en) * | 2022-08-08 | 2022-11-01 | 上海建工集团股份有限公司 | Local self-collapsing water stopping method for underground continuous wall |
| CN115262651B (en) * | 2022-08-08 | 2023-11-07 | 上海建工集团股份有限公司 | Underground diaphragm wall local self-collapsing type water stopping method |
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