CN114875896A - Method for forming hole by extruding supporting disc in bridge pile foundation construction - Google Patents
Method for forming hole by extruding supporting disc in bridge pile foundation construction Download PDFInfo
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- CN114875896A CN114875896A CN202210670552.8A CN202210670552A CN114875896A CN 114875896 A CN114875896 A CN 114875896A CN 202210670552 A CN202210670552 A CN 202210670552A CN 114875896 A CN114875896 A CN 114875896A
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- 238000000034 method Methods 0.000 title claims abstract description 33
- 238000010276 construction Methods 0.000 title claims abstract description 27
- 238000001514 detection method Methods 0.000 claims abstract description 57
- 238000004140 cleaning Methods 0.000 claims abstract description 24
- 238000001125 extrusion Methods 0.000 claims abstract description 17
- 230000002787 reinforcement Effects 0.000 claims abstract description 5
- 230000002159 abnormal effect Effects 0.000 claims description 9
- 239000013049 sediment Substances 0.000 claims description 7
- 238000011156 evaluation Methods 0.000 claims description 4
- 239000002002 slurry Substances 0.000 claims description 3
- 238000009527 percussion Methods 0.000 abstract description 10
- 230000008901 benefit Effects 0.000 abstract description 5
- 239000011435 rock Substances 0.000 abstract description 5
- 238000005553 drilling Methods 0.000 description 3
- 239000002699 waste material Substances 0.000 description 3
- 230000015572 biosynthetic process Effects 0.000 description 2
- 238000005755 formation reaction Methods 0.000 description 2
- 239000011229 interlayer Substances 0.000 description 2
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 238000006467 substitution reaction Methods 0.000 description 1
- 238000012795 verification Methods 0.000 description 1
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Classifications
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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
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- E—FIXED CONSTRUCTIONS
- E02—HYDRAULIC ENGINEERING; FOUNDATIONS; SOIL SHIFTING
- E02D—FOUNDATIONS; EXCAVATIONS; EMBANKMENTS; UNDERGROUND OR UNDERWATER STRUCTURES
- E02D27/00—Foundations as substructures
- E02D27/10—Deep foundations
- E02D27/12—Pile foundations
Abstract
The invention discloses a method for forming a hole by extruding a supporting disc in bridge pile foundation construction, which adopts a percussion drill, a rotary drill and a rotary drill to cooperatively process a main hole for forming a hole; after the main hole is formed, detecting whether the hole depth, the hole diameter and the verticality deviate or not by using a hole detector, selecting a corresponding model of a supporting disc machine according to the pile diameter of a pile foundation, performing extrusion and expansion operation, detecting extrusion and expansion pressure to generate actual detection data in the construction process, and sequentially performing all supporting disc extrusion and expansion operations; and after extrusion and expansion are finished, cleaning holes, putting down a reinforcement cage, and pouring concrete. The main hole is formed by matching the percussion drill, the rotary drill and the rotary drill, the detection step is matched with the squeezing and expanding operation step, the squeezing and expanding step, the hole cleaning step and the follow-up step are sequentially carried out for continuous operation, the problems that a geological rock stratum is hard and a common hole forming process is difficult to construct are solved, the pile foundation hole forming speed is increased, the pile length required by a pile foundation is shortened, the construction period is guaranteed, and the economic benefit is remarkable.
Description
Technical Field
The invention relates to the field of bridge pile foundation construction, in particular to a method for forming holes in a bridge pile foundation construction extrusion supporting disc.
Background
At present, in bridge pile foundation construction, part of regions have complicated geology, a plurality of interlayers and hard rock formations, and part of the regions reaches up to 180MPa, and the common bridge pile foundation in the prior art adopts conventional pore-forming processes such as percussion drilling pore-forming, rotary drilling pore-forming or rotary drilling and the like, so that the conventional pore-forming process is difficult to meet the progress requirement in the geology under the conditions of complicated geology, a plurality of interlayers and hard rock formations, the equipment pore-forming loss is large, the pore-forming time is long, and the resource waste is serious.
Disclosure of Invention
In order to overcome the defects of the prior art, the invention aims to provide a method for forming holes by using a bridge pile foundation construction extruding support disc, which can solve the problems of large hole forming loss, long hole forming time and serious resource waste of equipment.
One of the purposes of the invention is realized by adopting the following technical scheme:
a method for forming a hole by an extruding support disc for bridge pile foundation construction comprises the following steps:
main hole forming: adopting a percussion drill, a rotary drill and a rotary drill to cooperatively process a main hole for forming a hole;
a detection step: after the main hole is formed, a hole detector is adopted to detect whether the hole depth, the hole diameter and the verticality have the deviation problem, if not, the extruding and expanding operation is carried out, and if so, the reworking treatment is carried out;
extruding and expanding operation: selecting a corresponding model of a supporting disc machine according to the pile diameter of the pile foundation, carrying out extrusion and expansion operation, detecting extrusion and expansion pressure to generate actual detection data in the construction process, comparing the actual detection data with a standard value of the extrusion and expansion pressure, judging whether the bearing capacity of the supporting disc has an overload problem, and if so, stopping the operation;
sequentially squeezing and expanding: sequentially carrying out all branch disc squeezing and expanding operations;
hole cleaning: after the squeezing and expanding are finished, hole cleaning treatment is carried out, whether the mud index and the sediment thickness exceed the standard or not is detected, if not, the next step is executed, and if yes, rework treatment is carried out;
the following steps: and (5) putting down a reinforcement cage, and pouring concrete.
Further, in the main hole forming step, the main hole is divided into three sections, wherein the first section adopts a percussion drill, the second section adopts a rotary drill, and the third section adopts a rotary drill.
Further, in the master hole forming step, the length of the second section is set to be 3 to 5 times that of the first section, and the length of the third section is set to be 1.2 to 2 times that of the first section.
Further, in the detecting step, primary detection data is generated according to the hole depth, the hole diameter and the verticality data detected by the hole detector, and secondary detection is carried out to generate secondary detection data if the hole depth, the hole diameter and the verticality data detected by the hole detector do not meet requirements.
Further, in the detecting step, the primary detection data and the secondary detection data are compared, whether a deviation value of more than 5% occurs is checked, and if yes, the deviation data and the deviation position are identified.
Further, in the detecting step, two times of detection are continuously performed according to the deviation position of the identifier, three times of detection data and four times of detection data are generated, and the average value of the three times of detection data and the four times of detection data is taken for evaluation.
Further, in the squeezing and expanding operation step, whether the deviation between the actual detection data and the squeezing and expanding pressure standard value is less than 10% or not is calculated, if yes, the bearing capacity of the branch disc is judged to meet the requirement, and if not, the operation is stopped.
Further, in the hole cleaning step, if the slurry index and the sediment thickness are detected to be abnormal, an abnormal position is identified.
Further, in the hole cleaning step, secondary cleaning is performed on the abnormal position.
Further, in the hole cleaning step, after the secondary cleaning is finished, the secondary detection is carried out.
Compared with the prior art, the invention has the beneficial effects that:
adopting a percussion drill, a rotary drill and a rotary drill to cooperatively process a main hole for forming a hole; after the main hole is formed, detecting whether the hole depth, the hole diameter and the verticality have the deviation problem by using a hole detecting instrument, if not, performing extruding and expanding operation, and if so, performing reworking treatment; selecting a corresponding model of a supporting disc machine according to the pile diameter of the pile foundation, carrying out extrusion and expansion operation, detecting extrusion and expansion pressure to generate actual detection data in the construction process, comparing the actual detection data with a standard value of the extrusion and expansion pressure, judging whether the bearing capacity of the supporting disc has an overload problem, and if so, stopping the operation; sequentially carrying out squeezing and expanding operation on all branch discs; after the squeezing and expanding are finished, hole cleaning treatment is carried out, whether the mud index and the sediment thickness exceed the standard or not is detected, if not, the next step is executed, and if yes, rework treatment is carried out; and (5) putting down a reinforcement cage, and pouring concrete. The main hole is formed by matching the percussion drill, the rotary drill and the rotary drill, the detection step is matched with the squeezing and expanding operation step, the squeezing and expanding step, the hole cleaning step and the follow-up step are sequentially carried out for continuous operation, the problems that a geological rock stratum is hard and a common hole forming process is difficult to construct are solved, the pile foundation hole forming speed is increased, the pile length required by a pile foundation is shortened, the construction period is guaranteed, and the economic benefit is remarkable.
The foregoing description is only an overview of the technical solutions of the present invention, and in order to make the technical means of the present invention more clearly understood, the present invention may be implemented in accordance with the content of the description, and in order to make the above and other objects, features, and advantages of the present invention more clearly understood, the following preferred embodiments are described in detail with reference to the accompanying drawings.
Drawings
Fig. 1 is a flowchart of a method for forming a hole by an extruding-supporting disc for bridge pile foundation construction according to a preferred embodiment of the present invention.
Detailed Description
The present invention will be further described with reference to the accompanying drawings and the detailed description, and it should be noted that any combination of the embodiments or technical features described below can be used to form a new embodiment without conflict.
It will be understood that when an element is referred to as being "secured to" another element, it can be directly on the other element or intervening elements may also be present. When a component is referred to as being "connected" to another component, it can be directly connected to the other component or intervening components may also be present. When a component is referred to as being "disposed on" another component, it can be directly on the other component or intervening components may also be present. The terms "vertical," "horizontal," "left," "right," and the like as used herein are for illustrative purposes only.
Unless defined otherwise, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this invention belongs. The terminology used in the description of the invention herein is for the purpose of describing particular embodiments only and is not intended to be limiting of the invention. As used herein, the term "and/or" includes any and all combinations of one or more of the associated listed items.
Referring to fig. 1, a method for forming a hole by using an extruding support disc in bridge pile foundation construction comprises the following steps:
main hole forming: adopting a percussion drill, a rotary drill and a rotary drill to cooperatively process a main hole for forming a hole; preferably, in the main hole forming step, the main hole is divided into three sections, the first section adopts a percussion drill, the second section adopts a rotary drill, and the third section adopts a rotary drill. In the main hole forming step, the length of the second section is set to be 3-5 times of that of the first section, and the length of the third section is set to be 1.2-2 times of that of the first section. The method for forming the holes by the aid of the extruding and supporting discs is adopted, the speed of forming the holes by the pile foundation is greatly increased, the pile length required by the pile foundation is shortened, the construction period is guaranteed, and economic benefits are remarkable.
A detection step: after the main hole is formed, a hole detector is adopted to detect whether the hole depth, the hole diameter and the verticality have the deviation problem, if not, the extruding and expanding operation is carried out, and if so, the reworking treatment is carried out; in the detection step, primary detection data are generated according to the hole depth, the hole diameter and the verticality data detected by the hole detector, and secondary detection is carried out to generate secondary detection data if the hole depth, the hole diameter and the verticality data detected by the hole detector do not meet requirements.
Preferably, in the detecting step, the primary detection data and the secondary detection data are compared to check whether a deviation value of 5% or more occurs, and if so, the deviation data and the deviation position are identified.
Preferably, in the detecting step, the detection is performed twice in succession according to the deviation position of the mark, so as to generate three times of detection data and four times of detection data, and the average value of the three times of detection data and the four times of detection data is taken for evaluation. The method adopts a mode of continuous 4 times of detection and evaluation for verification, solves the problem of error detection and avoids labor waste.
Extruding and expanding operation: selecting a corresponding model of a supporting disc machine according to the pile diameter of the pile foundation, carrying out extrusion and expansion operation, detecting extrusion and expansion pressure to generate actual detection data in the construction process, comparing the actual detection data with a standard value of the extrusion and expansion pressure, judging whether the bearing capacity of the supporting disc has an overload problem, and if so, stopping the operation; preferably, in the squeezing and expanding operation step, whether the deviation between the actual detection data and the squeezing and expanding pressure standard value is less than 10% or not is calculated, if yes, the bearing capacity of the branch disc is judged to meet the requirement, and if not, the operation is stopped.
Sequentially squeezing and expanding: sequentially carrying out all branch disc squeezing and expanding operations;
hole cleaning: after the squeezing and expanding are finished, hole cleaning treatment is carried out, whether the mud index and the sediment thickness exceed the standard or not is detected, if not, the next step is executed, and if yes, rework treatment is carried out; preferably, in the hole cleaning step, if the slurry index and the sediment thickness are detected to be abnormal, an abnormal position is identified. And carrying out secondary cleaning on the abnormal position. And after the secondary cleaning is finished, carrying out secondary detection.
The following steps: and (5) putting down a reinforcement cage, and pouring concrete. The main hole is formed by matching the percussion drill, the rotary drill and the rotary drill, the detection step is matched with the squeezing and expanding operation step, the squeezing and expanding step, the hole cleaning step and the follow-up step are sequentially carried out for continuous operation, the problems that a geological rock stratum is hard and a common hole forming process is difficult to construct are solved, the pile foundation hole forming speed is increased, the pile length required by a pile foundation is shortened, the construction period is guaranteed, and the economic benefit is remarkable.
The above embodiments are only preferred embodiments of the present invention, and the protection scope of the present invention is not limited thereby, and any insubstantial changes and substitutions made by those skilled in the art based on the present invention are within the protection scope of the present invention.
Claims (8)
1. A method for forming a hole by using an extruding support disc for bridge pile foundation construction is characterized by comprising the following steps:
a main hole forming step: adopting an impact drill, a rotary drill and a rotary drill to cooperatively process a main hole for forming a hole, dividing the main hole into three sections, wherein the first section adopts the impact drill, the second section adopts the rotary drill, the third section adopts the rotary drill, the length of the second section is set to be 3-5 times of that of the first section, and the length of the third section is set to be 1.2-2 times of that of the first section;
a detection step: after the main hole is formed, a hole detector is adopted to detect whether the hole depth, the hole diameter and the verticality have the deviation problem, if not, the extruding and expanding operation is carried out, and if so, the reworking treatment is carried out;
extruding and expanding operation: selecting a corresponding model of a supporting disc machine according to the pile diameter of the pile foundation, carrying out extrusion and expansion operation, detecting extrusion and expansion pressure to generate actual detection data in the construction process, comparing the actual detection data with a standard value of the extrusion and expansion pressure, judging whether the bearing capacity of the supporting disc has an overload problem, and if so, stopping the operation;
sequentially squeezing and expanding: a circulating main hole forming step, a detecting step and an extruding and expanding operation step are used for extruding and expanding other branch discs;
hole cleaning: after the squeezing and expanding are finished, hole cleaning treatment is carried out, whether the mud index and the sediment thickness exceed the standard or not is detected, if not, the next step is executed, and if yes, rework treatment is carried out;
the following steps: and (5) putting down a reinforcement cage, and pouring concrete.
2. The method for forming the hole by the bridge pile foundation construction extruding and supporting disc as claimed in claim 1, wherein: in the detection step, primary detection data are generated according to the hole depth, the hole diameter and the verticality data detected by the hole detector, and secondary detection is carried out to generate secondary detection data if the hole depth, the hole diameter and the verticality data detected by the hole detector do not meet requirements.
3. The method for forming the hole by the bridge pile foundation construction extruding and supporting disc as claimed in claim 2, wherein: in the detection step, the primary detection data and the secondary detection data are compared, whether a deviation value of more than 5% occurs is checked, and if yes, the deviation data and the deviation position are identified.
4. The method for forming the hole by the bridge pile foundation construction extruding and supporting disc as claimed in claim 3, wherein: in the detection step, two times of detection are continuously carried out according to the deviation position of the identifier to generate three times of detection data and four times of detection data, and the average value of the three times of detection data and the four times of detection data is taken for evaluation.
5. The method for forming the hole by the bridge pile foundation construction extruding and supporting disc as claimed in claim 1, wherein: in the squeezing and expanding operation step, whether the deviation between the actual detection data and the squeezing and expanding pressure standard value is less than 10% or not is calculated, if yes, the bearing capacity of the branch disc is judged to meet the requirement, and if not, the operation is stopped.
6. The method for forming the hole by the bridge pile foundation construction extruding and supporting disc as claimed in claim 1, wherein: in the hole cleaning step, if the slurry index and the sediment thickness are detected to be abnormal, the abnormal position is identified.
7. The method for forming the hole by the bridge pile foundation construction extruding and supporting disc as claimed in claim 6, wherein: and in the hole cleaning step, performing secondary cleaning on the abnormal position.
8. The method for forming holes by extruding and supporting discs in bridge pile foundation construction according to claim 7, characterized in that: in the hole cleaning step, secondary detection is carried out after secondary cleaning is finished.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202210670552.8A CN114875896A (en) | 2022-06-14 | 2022-06-14 | Method for forming hole by extruding supporting disc in bridge pile foundation construction |
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| Application Number | Priority Date | Filing Date | Title |
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| CN202210670552.8A CN114875896A (en) | 2022-06-14 | 2022-06-14 | Method for forming hole by extruding supporting disc in bridge pile foundation construction |
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| CN114875896A true CN114875896A (en) | 2022-08-09 |
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Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2008049291A1 (en) * | 2006-10-25 | 2008-05-02 | Dexin He | Rotary excavating-squeezing-reaming-drilling machine and its drilling mothed |
| CN105064336A (en) * | 2015-08-07 | 2015-11-18 | 中国铁建大桥工程局集团有限公司 | Hole forming construction method for three-section type pedestal pile |
| CN108360972A (en) * | 2018-01-23 | 2018-08-03 | 四川公路桥梁建设集团有限公司 | A kind of rotary drilling rig is combined with percussive drill carries out bored pile construction method |
| CN109488202A (en) * | 2018-11-05 | 2019-03-19 | 云南建投第三建设有限公司 | A kind of gravel rock stratum pile foundation drilling construction engineering method containing gravel-boulder bed |
| CN110410001A (en) * | 2019-06-26 | 2019-11-05 | 广州穗岩土木科技股份有限公司 | A kind of construction method of superhard rock stratum pile foundation pore-forming |
| CN113529684A (en) * | 2021-06-28 | 2021-10-22 | 中铁南方投资集团有限公司 | Supporting disk pile for filling soft stratum and construction method thereof |
-
2022
- 2022-06-14 CN CN202210670552.8A patent/CN114875896A/en active Pending
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2008049291A1 (en) * | 2006-10-25 | 2008-05-02 | Dexin He | Rotary excavating-squeezing-reaming-drilling machine and its drilling mothed |
| CN105064336A (en) * | 2015-08-07 | 2015-11-18 | 中国铁建大桥工程局集团有限公司 | Hole forming construction method for three-section type pedestal pile |
| CN108360972A (en) * | 2018-01-23 | 2018-08-03 | 四川公路桥梁建设集团有限公司 | A kind of rotary drilling rig is combined with percussive drill carries out bored pile construction method |
| CN109488202A (en) * | 2018-11-05 | 2019-03-19 | 云南建投第三建设有限公司 | A kind of gravel rock stratum pile foundation drilling construction engineering method containing gravel-boulder bed |
| CN110410001A (en) * | 2019-06-26 | 2019-11-05 | 广州穗岩土木科技股份有限公司 | A kind of construction method of superhard rock stratum pile foundation pore-forming |
| CN113529684A (en) * | 2021-06-28 | 2021-10-22 | 中铁南方投资集团有限公司 | Supporting disk pile for filling soft stratum and construction method thereof |
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