CN115075226A - Construction method for assembled high-pressure jet grouting reducing telescopic reinforcement cage expansion anchor cable - Google Patents
Construction method for assembled high-pressure jet grouting reducing telescopic reinforcement cage expansion anchor cable Download PDFInfo
- Publication number
- CN115075226A CN115075226A CN202210774743.9A CN202210774743A CN115075226A CN 115075226 A CN115075226 A CN 115075226A CN 202210774743 A CN202210774743 A CN 202210774743A CN 115075226 A CN115075226 A CN 115075226A
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- Prior art keywords
- reinforcement cage
- anchor cable
- construction
- spraying
- drill rod
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- 238000010276 construction Methods 0.000 title claims abstract description 52
- 230000002787 reinforcement Effects 0.000 title claims abstract description 44
- 238000005553 drilling Methods 0.000 claims abstract description 17
- 230000004048 modification Effects 0.000 claims abstract description 5
- 238000012986 modification Methods 0.000 claims abstract description 5
- 230000005012 migration Effects 0.000 claims abstract description 4
- 238000013508 migration Methods 0.000 claims abstract description 4
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims abstract description 4
- 238000005507 spraying Methods 0.000 claims description 21
- 229910000831 Steel Inorganic materials 0.000 claims description 16
- 239000010959 steel Substances 0.000 claims description 16
- 239000002002 slurry Substances 0.000 claims description 15
- 239000004568 cement Substances 0.000 claims description 9
- 238000000034 method Methods 0.000 claims description 4
- 230000008569 process Effects 0.000 claims description 4
- 230000008901 benefit Effects 0.000 abstract description 7
- 238000005516 engineering process Methods 0.000 abstract description 3
- 238000011065 in-situ storage Methods 0.000 abstract description 3
- 238000002347 injection Methods 0.000 description 6
- 239000007924 injection Substances 0.000 description 6
- 230000009286 beneficial effect Effects 0.000 description 2
- 230000004075 alteration Effects 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 230000000452 restraining effect Effects 0.000 description 1
- 239000000243 solution Substances 0.000 description 1
- 230000006641 stabilisation Effects 0.000 description 1
- 238000011105 stabilization Methods 0.000 description 1
- 238000006467 substitution reaction Methods 0.000 description 1
Classifications
-
- 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
-
- 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
- E02D5/46—Concrete or concrete-like piles cast in position ; Apparatus for making same making in situ by forcing bonding agents into gravel fillings or the soil
Landscapes
- Engineering & Computer Science (AREA)
- Structural Engineering (AREA)
- Life Sciences & Earth Sciences (AREA)
- General Life Sciences & Earth Sciences (AREA)
- Mining & Mineral Resources (AREA)
- Paleontology (AREA)
- Civil Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Piles And Underground Anchors (AREA)
Abstract
The invention relates to the technical field of constructional engineering, and discloses a construction method of an assembled high-pressure jet grouting reducing telescopic reinforcement cage expansion anchor cable, which comprises the following steps: s1, carrying out geological exploration on the construction site, knowing the structure conditions of pipelines, buildings and other public facilities near the engineering, carrying out migration and modification on the pipelines needing to be migrated and modified, and completing electrification, passage, water passing and land leveling of the construction site; and S2, measuring the elevation, calculating the rotary digging depth, positioning the rotary digging drilling machine, rotatably digging in, and shifting the drilling machine after hole forming is finished. According to the construction method of the assembled high-pressure jet grouting reducing telescopic reinforcement cage expansion anchor cable, the post-reinforcement cage construction is performed through the high-pressure jet grouting pile, so that the pile body strength is higher, the post-reinforcement cage construction can be used as a bearing foundation pile after being placed into a reinforcement cage, the construction cost is lower than that of a cast-in-situ bored pile, reducing expansion can be performed through the expansion anchor cable, the technology is mature, the construction speed is high, the construction cost is low, and certain social benefits and economic benefits are achieved.
Description
Technical Field
The invention relates to the technical field of constructional engineering, in particular to a construction method of an assembled high-pressure jet grouting reducing telescopic reinforcement cage expansion anchor cable.
Background
The reinforcement cage mainly plays a role in keeping with the stress of longitudinal steel bars of the column, and mainly plays a role in tensile strength, the compressive strength of concrete is high, but the tensile strength is very low, the pile body concrete plays a role in restraining, so that the pile body concrete can bear certain axial tension.
The traditional construction method of the assembled high-pressure rotary-spraying variable-diameter telescopic reinforcement cage is used for construction in a complex stratum according to a conventional construction process and standard parameters, the foundation stabilization quality is difficult to control, the construction efficiency is low, and the construction cost is high, so that the construction method of the assembled high-pressure rotary-spraying variable-diameter telescopic reinforcement cage expansion anchor cable is provided to solve the problems.
Disclosure of Invention
Technical problem to be solved
Aiming at the defects of the prior art, the invention provides a construction method of an assembled high-pressure jet grouting reducing telescopic reinforcement cage expansion anchor cable, which has the advantages of high conveying efficiency and the like and solves the problems of high construction cost and low construction efficiency.
(II) technical scheme
In order to achieve the purpose, the invention provides the following technical scheme: the construction method of the assembled high-pressure jet grouting reducing telescopic reinforcement cage expansion anchor cable comprises the following steps:
s1, carrying out geological exploration on the construction site, knowing the structure conditions of pipelines, buildings and other public facilities near the engineering, carrying out migration and modification on the pipelines needing to be migrated and modified, and completing electrification, passage, water passing and land leveling of the construction site;
s2, measuring the elevation, calculating the rotary digging depth, positioning the rotary digging drilling machine, rotationally digging in, and shifting the drilling machine after hole forming is finished;
s3, placing the rotary spraying vehicle in place, vertically drilling the drill rod downwards, spraying cement slurry in the drilling process, lifting the drill rod upwards after the drill rod is drilled to the designed pile bottom elevation, re-spraying the cement slurry when lifting the drill rod, performing secondary re-spraying circulation construction after the cement slurry reaches the initial setting time, and displacing the rotary spraying pile after the pile is formed;
s4, processing the steel reinforcement cage, installing an expanded anchor cable, placing a pile position fixer, hoisting the steel reinforcement cage into a pile hole, adjusting the vertical angle of the steel reinforcement cage, reducing the diameter of the steel reinforcement cage by using the expanded anchor cable, and lowering the steel reinforcement cage to a designed elevation;
and S5, pouring concrete into the reinforcement cage, and after the pouring is finished, displacing all the construction equipment.
Preferably, in step S2, the deviation between the drill rod and the pile position is not more than 5cm, and the opening aperture is not more than 5cm of the outer diameter of the injection pipe.
Preferably, in step S2, the aperture of the final hole is larger than the outer diameter of the injection pipe by 3cm, and the depth of the final hole is larger than the preset opening depth by 0.3-0.5 m.
Preferably, in the step S3, the drilling speed of the drill rod is 5-8 cm/min, the rotating speed of the drill rod is 7-10 rpm, the slurry injection pressure is 20-25 MPa, and the compressed air pressure is 0.5-0.8 MPa.
Preferably, in the step S3, the lifting speed of the drill rod is 8-10 cm/min, the rotating speed of the drill rod is 10-13 rpm, the slurry injection pressure is 15-20 MPa, and the compressed air pressure is 0.3-0.5 MPa.
Preferably, in step S5, when the reinforcement cage starts to float up, the pouring should be stopped immediately, the buried depth of the conduit and the elevation of the poured concrete should be accurately calculated, and the conduit should be removed.
(III) advantageous effects
Compared with the prior art, the invention provides a construction method of an assembled high-pressure jet grouting reducing telescopic reinforcement cage expansion anchor cable, which has the following beneficial effects:
according to the construction method of the assembled high-pressure jet grouting reducing telescopic reinforcement cage expansion anchor cable, the post-reinforcement cage construction is performed through the high-pressure jet grouting pile, so that the pile body strength is higher, the post-reinforcement cage construction can be used as a bearing foundation pile after being placed into a reinforcement cage, the construction cost is lower than that of a cast-in-situ bored pile, reducing expansion can be performed through the expansion anchor cable, the technology is mature, the construction speed is high, the construction cost is low, and certain social benefits and economic benefits are achieved.
Detailed Description
The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. All other embodiments, which can be obtained by a person skilled in the art without making any creative effort based on the embodiments in the present invention, belong to the protection scope of the present invention.
The construction method of the assembled high-pressure jet grouting reducing telescopic reinforcement cage expansion anchor cable comprises the following steps:
s1, carrying out geological exploration on the construction site, knowing the structure conditions of pipelines, buildings and other public facilities near the engineering, carrying out migration and modification on the pipelines needing to be migrated and modified, and completing electrification, passage, water passing and land leveling of the construction site;
s2, measuring elevation, calculating rotary digging depth, placing a rotary digging drilling machine in position, wherein the deviation between a drill rod and a pile position is not more than 5cm, the aperture of a hole is not more than 5cm of the outer diameter of an injection pipe, rotationally digging, wherein the aperture of a final hole is more than 3cm of the outer diameter of the injection pipe, the depth of the final hole is more than 0.3-0.5m of the preset opening spraying depth, and the drilling machine shifts after hole forming;
s3, placing a rotary jetting vehicle in place, vertically downwards drilling a drill rod, enabling the drilling speed of the drill rod to be 5-8 cm/min, enabling the rotation speed of the drill rod to be 7-10 rpm, jetting cement slurry in the drilling process, enabling the slurry jetting pressure to be 20-25 Mpa, enabling the compressed air pressure to be 0.5-0.8 MPa, starting to upwards lift the drill rod when the drill rod is drilled to the designed pile bottom elevation, enabling the lifting speed of the drill rod to be 8-10 cm/min, enabling the rotation speed of the drill rod to be 10-13 rpm, carrying out re-jetting cement slurry when the drill rod is lifted, enabling the slurry jetting pressure to be 15-20 Mpa and the compressed air pressure to be 0.3-0.5 MPa, carrying out secondary re-jetting circulation construction after the cement slurry reaches the initial setting time, and shifting after a rotary jetting pile is formed;
s4, processing the steel reinforcement cage, installing an expanded anchor cable, placing a pile position fixer, hoisting the steel reinforcement cage into a pile hole, adjusting the vertical angle of the steel reinforcement cage, reducing the diameter of the steel reinforcement cage by using the expanded anchor cable, and lowering the steel reinforcement cage to a designed elevation;
and S5, pouring concrete into the reinforcement cage, stopping pouring immediately when the reinforcement cage begins to float upwards, accurately calculating the buried depth of the guide pipe and the elevation of the poured concrete, removing the guide pipe, and shifting all construction equipment after pouring is finished.
The invention has the beneficial effects that: through the construction of the high-pressure jet grouting pile post-arranged reinforcement cage, the pile body is higher in strength, the pile body can be used as a bearing foundation pile after being arranged in the reinforcement cage, the construction cost is lower than that of a cast-in-situ bored pile, variable-diameter expansion and expansion can be carried out through an expansion anchor rope, the technology is mature, the construction speed is high, the construction cost is low, and certain social benefits and economic benefits are achieved.
Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that changes, modifications, substitutions and alterations can be made in these embodiments without departing from the principles and spirit of the invention, the scope of which is defined in the appended claims and their equivalents.
Claims (6)
1. The construction method of the assembled high-pressure jet grouting reducing telescopic reinforcement cage expansion anchor cable is characterized by comprising the following steps of:
s1, carrying out geological exploration on the construction site, knowing the structure conditions of pipelines, buildings and other public facilities near the engineering, carrying out migration and modification on the pipelines needing to be migrated and modified, and completing electrification, passage, water passing and land leveling of the construction site;
s2, measuring the elevation, calculating the rotary digging depth, positioning the rotary digging drilling machine, rotationally digging in, and shifting the drilling machine after hole forming is finished;
s3, placing the rotary spraying vehicle in place, vertically drilling the drill rod downwards, spraying cement slurry in the drilling process, lifting the drill rod upwards after the drill rod drills to the designed pile bottom elevation, re-spraying the cement slurry when the drill rod is lifted, performing secondary re-spraying circulation construction after the cement slurry reaches the initial setting time, and shifting the rotary spraying pile after the pile is formed;
s4, processing the steel reinforcement cage, installing an expanded anchor cable, placing a pile position fixer, hoisting the steel reinforcement cage into a pile hole, adjusting the vertical angle of the steel reinforcement cage, reducing the diameter of the steel reinforcement cage by using the expanded anchor cable, and lowering the steel reinforcement cage to a designed elevation;
and S5, pouring concrete into the reinforcement cage, and after the pouring is finished, displacing all the construction equipment.
2. The construction method for the assembled high-pressure jet grouting reducing telescopic reinforcement cage expansion anchor cable according to claim 1, wherein in step S2, the deviation between a drill rod and a pile position is not more than 5cm, and the opening diameter is not more than 5cm of the outer diameter of a jet pipe.
3. The construction method of the assembled high-pressure rotary-spraying reducing telescopic reinforcement cage expansion anchor cable according to claim 1, wherein in the step S2, the aperture of the final hole is larger than the outer diameter of the spraying pipe by 3cm, and the depth of the final hole is larger than the preset opening spraying depth by 0.3-0.5 m.
4. The construction method of the assembled high-pressure rotary spraying reducing telescopic reinforcement cage expansion anchor cable according to claim 1, wherein in the step S3, the drilling speed of a drill rod is 5-8 cm/min, the rotating speed of the drill rod is 7-10 rpm, the slurry spraying pressure is 20-25 MPa, and the compressed air pressure is 0.5-0.8 MPa.
5. The construction method of the assembled high-pressure rotary spraying reducing telescopic reinforcement cage expansion anchor cable according to claim 1, wherein in the step S3, the lifting speed of a drill rod is 8-10 cm/min, the rotating speed of the drill rod is 10-13 rpm, the slurry spraying pressure is 15-20 MPa, and the compressed air pressure is 0.3-0.5 MPa.
6. The construction method of the assembled high-pressure rotary-spraying reducing telescopic reinforcement cage expansion anchor cable according to claim 1, wherein in step S5, when the reinforcement cage starts to float upwards, pouring should be stopped immediately, the buried depth of the guide pipe and the elevation of the poured concrete should be calculated accurately, and the guide pipe should be removed.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202210774743.9A CN115075226A (en) | 2022-07-01 | 2022-07-01 | Construction method for assembled high-pressure jet grouting reducing telescopic reinforcement cage expansion anchor cable |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202210774743.9A CN115075226A (en) | 2022-07-01 | 2022-07-01 | Construction method for assembled high-pressure jet grouting reducing telescopic reinforcement cage expansion anchor cable |
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| Publication Number | Publication Date |
|---|---|
| CN115075226A true CN115075226A (en) | 2022-09-20 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202210774743.9A Pending CN115075226A (en) | 2022-07-01 | 2022-07-01 | Construction method for assembled high-pressure jet grouting reducing telescopic reinforcement cage expansion anchor cable |
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| Country | Link |
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| CN (1) | CN115075226A (en) |
Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106917401A (en) * | 2017-02-28 | 2017-07-04 | 中国二十冶集团有限公司 | Rubble, pebble layer high-pressure rotary jet grouting pile do not return the processing method of slurry |
| CN109457694A (en) * | 2018-12-14 | 2019-03-12 | 江苏景源万河环境科技有限公司 | A kind of variable diameters steel reinforcement cage enlarged footing anti-floating or pressure bearing pile and construction in conjunction with mixing pile or rotary churning pile |
| CN111877334A (en) * | 2020-08-26 | 2020-11-03 | 中交天津港湾工程研究院有限公司 | Pre-tensioned bottom-expanding anchor cable and construction method for constructing supporting structure by using same |
| US20200362527A1 (en) * | 2018-01-30 | 2020-11-19 | Shandong Bei Te Li Foundation Engineering Technology Co., Ltd | Jetting, expansion and extrusion combined pile, construction method thereof and spiral jetting, expansion and extrusion drilling rig used in method |
| CN113404040A (en) * | 2021-07-06 | 2021-09-17 | 中铁二十局集团第六工程有限公司 | Construction method of bored pile foundation |
-
2022
- 2022-07-01 CN CN202210774743.9A patent/CN115075226A/en active Pending
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106917401A (en) * | 2017-02-28 | 2017-07-04 | 中国二十冶集团有限公司 | Rubble, pebble layer high-pressure rotary jet grouting pile do not return the processing method of slurry |
| US20200362527A1 (en) * | 2018-01-30 | 2020-11-19 | Shandong Bei Te Li Foundation Engineering Technology Co., Ltd | Jetting, expansion and extrusion combined pile, construction method thereof and spiral jetting, expansion and extrusion drilling rig used in method |
| CN109457694A (en) * | 2018-12-14 | 2019-03-12 | 江苏景源万河环境科技有限公司 | A kind of variable diameters steel reinforcement cage enlarged footing anti-floating or pressure bearing pile and construction in conjunction with mixing pile or rotary churning pile |
| CN111877334A (en) * | 2020-08-26 | 2020-11-03 | 中交天津港湾工程研究院有限公司 | Pre-tensioned bottom-expanding anchor cable and construction method for constructing supporting structure by using same |
| CN113404040A (en) * | 2021-07-06 | 2021-09-17 | 中铁二十局集团第六工程有限公司 | Construction method of bored pile foundation |
Non-Patent Citations (1)
| Title |
|---|
| 徐长杰: "长螺旋钻机成孔后插钢筋笼灌注桩在工民建基础工程上的应用", 建筑技术开发, vol. 45, no. 1, pages 51 - 52 * |
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