CN113431049A - Grouting reinforcement device for stopping water between cast-in-place pile piles and construction method - Google Patents
Grouting reinforcement device for stopping water between cast-in-place pile piles and construction method Download PDFInfo
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- CN113431049A CN113431049A CN202110717537.XA CN202110717537A CN113431049A CN 113431049 A CN113431049 A CN 113431049A CN 202110717537 A CN202110717537 A CN 202110717537A CN 113431049 A CN113431049 A CN 113431049A
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- grouting
- cast
- water
- pile
- stopping
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- E—FIXED CONSTRUCTIONS
- E02—HYDRAULIC ENGINEERING; FOUNDATIONS; SOIL SHIFTING
- E02D—FOUNDATIONS; EXCAVATIONS; EMBANKMENTS; UNDERGROUND OR UNDERWATER STRUCTURES
- E02D17/00—Excavations; Bordering of excavations; Making embankments
- E02D17/02—Foundation pits
- E02D17/04—Bordering surfacing or stiffening the sides of foundation pits
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- E—FIXED CONSTRUCTIONS
- E02—HYDRAULIC ENGINEERING; FOUNDATIONS; SOIL SHIFTING
- E02D—FOUNDATIONS; EXCAVATIONS; EMBANKMENTS; UNDERGROUND OR UNDERWATER STRUCTURES
- E02D19/00—Keeping dry foundation sites or other areas in the ground
- E02D19/06—Restraining of underground water
- E02D19/12—Restraining of underground water by damming or interrupting the passage of underground water
- E02D19/18—Restraining of underground water by damming or interrupting the passage of underground water by making use of sealing aprons, e.g. diaphragms made from bituminous or clay material
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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
- E02D5/02—Sheet piles or sheet pile bulkheads
- E02D5/03—Prefabricated parts, e.g. composite sheet piles
- E02D5/04—Prefabricated parts, e.g. composite sheet piles made of steel
- E02D5/06—Fitted piles or other elements specially adapted for closing gaps between two sheet piles or between two walls of sheet piles
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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
- E02D5/36—Concrete or concrete-like piles cast in position ; Apparatus for making same making without use of mouldpipes or other moulds
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- E—FIXED CONSTRUCTIONS
- E02—HYDRAULIC ENGINEERING; FOUNDATIONS; SOIL SHIFTING
- E02D—FOUNDATIONS; EXCAVATIONS; EMBANKMENTS; UNDERGROUND OR UNDERWATER STRUCTURES
- E02D2250/00—Production methods
- E02D2250/0023—Cast, i.e. in situ or in a mold or other formwork
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- E—FIXED CONSTRUCTIONS
- E02—HYDRAULIC ENGINEERING; FOUNDATIONS; SOIL SHIFTING
- E02D—FOUNDATIONS; EXCAVATIONS; EMBANKMENTS; UNDERGROUND OR UNDERWATER STRUCTURES
- E02D2250/00—Production methods
- E02D2250/003—Injection of material
Abstract
The invention relates to a grouting reinforcement device for stopping water between cast-in-place piles and a construction method. The method comprises the steps of firstly constructing the bored pile, injecting high-pressure clear water into the grouting pipe to split the concrete protective layer to form a reserved gap, then inserting the steel plate, grouting and reinforcing the soil body between the piles through the high-pressure injection of the grouting pipe, and lapping the bored pile through the water stop steel plate and the grouting reinforcing body, so that the combined foundation pit support structure has good soil retaining and water stopping effects. The enclosure structure and the construction method thereof are both from a construction process which is more and mature in application in engineering, and have the advantages of high construction speed, high efficiency and lower manufacturing cost.
Description
Technical Field
The invention relates to a grouting reinforcement device for stopping water among cast-in-place piles and a construction method, in particular to a foundation pit support structure consisting of cast-in-place bored piles, a water stopping steel plate and a grouting reinforcement body, and belongs to the technical field of foundation pit support engineering.
Background
Excavation of a foundation pit in a soft soil area needs foundation pit supporting, row pile supporting is one of the main methods for traditional foundation pit supporting in the soft soil area, but the row pile supporting is poor in water stopping effect, a water stopping curtain needs to be arranged, and the required construction space is large. The foundation pit enclosure structures such as the underground continuous wall and the like have high supporting strength and strong water stopping capability, but the construction process is relatively complex and the manufacturing cost is higher.
Disclosure of Invention
The invention provides a grouting reinforcement device for stopping water between cast-in-place piles and a construction method, which have good supporting capability and water stopping capability and moderate manufacturing cost and are used for solving the problems in the background technology. The concrete method is characterized in that the cast-in-situ bored piles, the water stop steel plates and the reinforcement bodies for grouting among the piles can be used for retaining soil and supporting, the water stop effect is good, and the requirements of deep foundation pit supporting and water stop are met; and the construction is convenient, the speed is fast, the cost is low and the benefit is good.
The technical scheme of the invention is as follows:
the utility model provides a slip casting reinforcing apparatus for stagnant water between bored concrete pile stake, includes bored concrete pile, stagnant water steel sheet, slip casting reinforcement body, inserts stagnant water steel sheet between two bored concrete piles to pour the slip casting reinforcement body in the space that two bored concrete piles inserted stagnant water steel sheet and constitute the envelope that has concurrently and strut and stagnant water function.
Furthermore, a steel reinforcement cage with a grouting pipe is inserted into the cast-in-situ bored pile.
Furthermore, the grouting pipe is vertically welded at the two sides of the steel reinforcement cage through welding points.
Furthermore, grouting holes are arranged on one side of the grouting pipe and used for injecting grouting, the diameter of each grouting hole is 3-5 mm, the distance between every two grouting holes is 200-400 mm, and each grouting hole is a one-way valve.
Further, the vertical allowable deviation of the grouting pipe is 1/150, the verticality of the grouting pipe is ensured by adding a welding point, and the allowable plane rotation angle of the grouting pipe is not more than 3 degrees.
Further, after the cast-in-situ bored pile is constructed, before the concrete is initially set, high-pressure water flow is injected into the grouting pipe to split through the concrete protective layer, so that a reserved gap for grouting is formed; and a water-stop steel plate is inserted in the gap.
Furthermore, the lower part of the water stop steel plate is provided with a blade foot, so that soil can be conveniently cut.
Further, the cutting edge is a single-side cutting edge or a double-side cutting edge.
A grouting reinforcement construction method for stopping water among cast-in-place pile piles adopts a grouting reinforcement device for stopping water among cast-in-place pile piles, and comprises the following steps:
step 1: constructing a bored pile hole by adopting a rotary drilling rig or a rotary drilling rig;
step 2: inserting a reinforcement cage with a grouting pipe into a pile hole of the bored pile;
and step 3: pouring concrete into the pile hole of the cast-in-situ bored pile to form a pile;
and 4, step 4: before concrete in a pile hole of the cast-in-situ bored pile is initially set, a high-pressure water is pressed in through a grouting pipe to split through a concrete protective layer so as to form a grouting reserved gap, and the two sides need to be symmetrically constructed simultaneously during pressing in high-pressure water construction to prevent a reinforcement cage from deflecting;
and 5: after the construction of the adjacent cast-in-situ bored piles is finished, inserting a water-stopping steel plate, and embedding the water-stopping steel plate into the reserved gap;
step 6: the grouting pipe is used for injecting cement slurry to fill the gap between the two cast-in-situ bored piles, the two sides of the grouting pipe need to be symmetrically constructed at the same time during grouting construction, and grouting reinforcement bodies are in lap joint with each other.
The invention has the beneficial effects that:
according to the invention, the foundation pit supporting structure is simple, can have soil retaining and water stopping effects, and has the advantages of low manufacturing cost, high construction speed and strong applicability.
Drawings
FIG. 1 is a plan view of a cast-in-situ bored pile under construction;
FIG. 2 is a plane layout view of a construction water stop steel plate;
FIG. 3 is a plan view of a construction grouting reinforcement;
FIG. 4 is a perspective view of a grout pipe;
FIG. 5 is a detailed view of node A;
fig. 6 is a side view of the water stop steel plate;
fig. 7 is a cross-sectional view of a foundation pit enclosure.
Detailed Description
The invention is further described with reference to the following figures and examples.
As shown in fig. 1 to 7, the grouting reinforcement device for stopping water between cast-in-place piles of the present invention includes a cast-in-place bored pile 1, a water-stopping steel plate 5, and a high-pressure injection grouting reinforcement body 4. The enclosure structure is composed of a cast-in-situ bored pile 1, a water stop steel plate 5 and a grouting reinforcement body 4, and has the functions of supporting and water stopping.
After the cast-in-situ bored pile 1 is constructed, high-pressure water flow is injected into the grouting pipe 2 to break through the concrete protective layer before concrete is initially set, so that a reserved gap 8 for grouting is formed; then inserting a water stop steel plate 5, and constructing a grouting reinforcement body 4; a grouting pipe 2 is arranged on a reinforcement cage 3 in the cast-in-situ bored pile 1; the grouting pipe 2 is vertically welded at the two sides of the reinforcement cage 3 through a welding point 6;
as shown in fig. 6, the water-stopping steel plate 5 has a certain thickness and strength, so that the water-stopping steel plate can keep vertical when being inserted and is not easy to deform, the lower part of the water-stopping steel plate is provided with a cutting edge, so that soil can be conveniently cut, and the water-stopping steel plate is suitable to be embedded into a reserved gap; the lower part of the water stop steel plate 5 is a blade foot, which can be a single-side blade foot as shown in figure 6 (b), and a double-side blade foot as shown in figure 6 (a); the grouting belongs to high-pressure grouting so as to be capable of opening soil bodies on two sides, and finally formed grouting reinforcement bodies (4) are required to be filled in gaps among bored pile piles and are mutually overlapped so as to play roles in protecting a reinforcement cage and stopping water.
As shown in fig. 4, grouting holes 7 are arranged on one side of a grouting pipe 2 for injection grouting, the diameter of each grouting hole is 3-5 mm, the distance between the grouting holes is 200-400 mm, each grouting hole is a one-way valve, and a welding point 6 is arranged on one side of each grouting pipe for welding with a reinforcement cage; the vertical allowable deviation of the grouting pipe 2 is 1/150, the perpendicularity of the grouting pipe can be guaranteed by adding the welding point 6, and the allowable plane corner of the grouting pipe is not larger than 3 degrees for guaranteeing the better lap joint of the grouting reinforcement body.
The invention discloses a construction method of a grouting reinforcement device for stopping water between cast-in-place pile piles, which comprises the following steps:
step 1: and constructing a bored pile hole by adopting a rotary drilling rig or a rotary drilling rig.
Step 2: and inserting a reinforcement cage with a grouting pipe into the pile hole.
And step 3: and pouring concrete in the pile hole to form the pile.
And 4, step 4: before the concrete in the pile is initially set, high-pressure water is pressed in through the grouting pipe to split the concrete protective layer, so that a grouting reserved gap is formed. When the high-pressure water is pressed in for construction, attention needs to be paid to simultaneous symmetrical construction on two sides so as to prevent the reinforcement cage from deflecting.
And 5: after the construction of the adjacent piles is finished, the water stop steel plate is inserted, and the water stop steel plate is suitable to be embedded into the reserved gap.
Step 6: the grouting pipe is used for injecting cement slurry to fill the gap between the two piles, the two sides of the grouting pipe need to be symmetrically constructed at the same time during grouting construction, and grouting reinforcement bodies are in lap joint with each other.
Claims (9)
1. The utility model provides a slip casting reinforcing apparatus for stagnant water between bored concrete pile stake, includes bored concrete pile, stagnant water steel sheet, slip casting reinforcement body, its characterized in that: and a water stop steel plate is inserted between the two cast-in-situ bored piles, and a grouting reinforcement body is poured in a gap between the two cast-in-situ bored piles inserted into the water stop steel plate to jointly form the enclosure structure with the functions of supporting and stopping water.
2. The grouting reinforcement device for water stop between cast-in-place pile piles according to claim 1, characterized in that: and a reinforcement cage with a grouting pipe is inserted into the cast-in-situ bored pile.
3. The grouting reinforcement device for stopping water between cast-in-place pile piles according to claim 2, characterized in that: and the grouting pipe is vertically welded at the two sides of the reinforcement cage through welding points.
4. The grouting reinforcement device for stopping water between cast-in-place pile piles according to claim 2, characterized in that: the grouting pipe is characterized in that grouting holes are arranged on one side of the grouting pipe and used for injecting grouting, the diameter of each grouting hole is 3-5 mm, the distance between every two grouting holes is 200-400 mm, and each grouting hole is a one-way valve.
5. The grouting reinforcement device for stopping water between cast-in-place pile piles according to claim 2, characterized in that: the vertical allowable deviation of the grouting pipe is 1/150, the verticality of the grouting pipe is ensured by adding a welding point, and the allowable plane rotation angle of the grouting pipe is not more than 3 degrees.
6. The grouting reinforcement device for water stop between cast-in-place pile piles according to claim 1, characterized in that: injecting high-pressure water flow into the grouting pipe to split through the concrete protective layer to form a reserved gap for grouting before initial setting of concrete after the construction of the cast-in-situ bored pile; and a water-stop steel plate is inserted in the gap.
7. The grouting reinforcement device for water stop between cast-in-place pile piles according to claim 1, characterized in that: and the lower part of the water stop steel plate is provided with a blade foot, so that soil is conveniently cut.
8. The grouting reinforcement device for stopping water between cast-in-place pile piles according to claim 7, characterized in that: the cutting edge is a single-side cutting edge or a double-side cutting edge.
9. A grouting reinforcement construction method for water stopping between cast-in-place pile piles, which adopts the grouting reinforcement device for water stopping between cast-in-place pile piles as claimed in any one of claims 1 to 8, and is characterized in that the method comprises the following steps:
step 1: constructing a bored pile hole by adopting a rotary drilling rig or a rotary drilling rig;
step 2: inserting a reinforcement cage with a grouting pipe into a pile hole of the bored pile;
and step 3: pouring concrete into the pile hole of the cast-in-situ bored pile to form a pile;
and 4, step 4: before concrete in a pile hole of the cast-in-situ bored pile is initially set, a high-pressure water is pressed in through a grouting pipe to split through a concrete protective layer so as to form a grouting reserved gap, and the two sides need to be symmetrically constructed simultaneously during pressing in high-pressure water construction to prevent a reinforcement cage from deflecting;
and 5: after the pile hole construction of the adjacent cast-in-place bored piles is finished, inserting a water-stopping steel plate, and embedding the water-stopping steel plate into the reserved gap;
step 6: the grouting pipe is used for injecting cement slurry to fill the gap between the two cast-in-situ bored piles, the two sides of the grouting pipe need to be symmetrically constructed at the same time during grouting construction, and grouting reinforcement bodies are in lap joint with each other.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202110717537.XA CN113431049A (en) | 2021-06-28 | 2021-06-28 | Grouting reinforcement device for stopping water between cast-in-place pile piles and construction method |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202110717537.XA CN113431049A (en) | 2021-06-28 | 2021-06-28 | Grouting reinforcement device for stopping water between cast-in-place pile piles and construction method |
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| Publication Number | Publication Date |
|---|---|
| CN113431049A true CN113431049A (en) | 2021-09-24 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202110717537.XA Pending CN113431049A (en) | 2021-06-28 | 2021-06-28 | Grouting reinforcement device for stopping water between cast-in-place pile piles and construction method |
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Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103343534A (en) * | 2013-07-31 | 2013-10-09 | 中国二十二冶集团有限公司 | Closed precipitation method for foundation pit construction |
| CN105064375A (en) * | 2015-08-17 | 2015-11-18 | 化学工业岩土工程有限公司 | Construction method of retaining and water stopping structure of foundation pit support |
| CN107460882A (en) * | 2017-06-20 | 2017-12-12 | 中冶天工集团有限公司 | A kind of retaining piles construction method of deep basal pit closing sealing |
| CN109137928A (en) * | 2018-08-22 | 2019-01-04 | 中国冶集团有限公司 | A kind of foundation pit earth-retaining slab supporting, water sealing structure and its construction method |
| CN109811775A (en) * | 2019-03-26 | 2019-05-28 | 上海市城市建设设计研究总院（集团）有限公司 | Drill-pouring support pile waterproof between piles structure and its construction method |
| CN211472517U (en) * | 2019-12-23 | 2020-09-11 | 佛山市平石深基坑工程有限公司 | Advanced water stop structure between piles |
-
2021
- 2021-06-28 CN CN202110717537.XA patent/CN113431049A/en active Pending
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103343534A (en) * | 2013-07-31 | 2013-10-09 | 中国二十二冶集团有限公司 | Closed precipitation method for foundation pit construction |
| CN105064375A (en) * | 2015-08-17 | 2015-11-18 | 化学工业岩土工程有限公司 | Construction method of retaining and water stopping structure of foundation pit support |
| CN107460882A (en) * | 2017-06-20 | 2017-12-12 | 中冶天工集团有限公司 | A kind of retaining piles construction method of deep basal pit closing sealing |
| CN109137928A (en) * | 2018-08-22 | 2019-01-04 | 中国冶集团有限公司 | A kind of foundation pit earth-retaining slab supporting, water sealing structure and its construction method |
| CN109811775A (en) * | 2019-03-26 | 2019-05-28 | 上海市城市建设设计研究总院（集团）有限公司 | Drill-pouring support pile waterproof between piles structure and its construction method |
| CN211472517U (en) * | 2019-12-23 | 2020-09-11 | 佛山市平石深基坑工程有限公司 | Advanced water stop structure between piles |
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Application publication date: 20210924 |
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| RJ01 | Rejection of invention patent application after publication |