CN109914395B - Rapid construction method and structure of large-diameter rock-socketed pile - Google Patents
Rapid construction method and structure of large-diameter rock-socketed pile Download PDFInfo
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- CN109914395B CN109914395B CN201910080901.9A CN201910080901A CN109914395B CN 109914395 B CN109914395 B CN 109914395B CN 201910080901 A CN201910080901 A CN 201910080901A CN 109914395 B CN109914395 B CN 109914395B
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- 238000010276 construction Methods 0.000 title claims abstract description 38
- 238000005553 drilling Methods 0.000 claims abstract description 46
- 239000011435 rock Substances 0.000 claims abstract description 24
- 238000009412 basement excavation Methods 0.000 claims abstract description 22
- 238000000034 method Methods 0.000 claims abstract description 10
- 239000011150 reinforced concrete Substances 0.000 claims abstract description 9
- 239000004567 concrete Substances 0.000 claims description 12
- 239000002893 slag Substances 0.000 claims description 8
- 239000004575 stone Substances 0.000 claims description 8
- 230000002787 reinforcement Effects 0.000 claims description 5
- 238000004140 cleaning Methods 0.000 claims description 3
- 230000003014 reinforcing effect Effects 0.000 claims description 2
- 238000012876 topography Methods 0.000 abstract description 2
- 238000010586 diagram Methods 0.000 description 4
- 238000005422 blasting Methods 0.000 description 2
- 238000012986 modification Methods 0.000 description 2
- 230000004048 modification Effects 0.000 description 2
- 230000002093 peripheral effect Effects 0.000 description 2
- 229910000831 Steel Inorganic materials 0.000 description 1
- 238000005299 abrasion Methods 0.000 description 1
- 238000004891 communication Methods 0.000 description 1
- 238000007599 discharging Methods 0.000 description 1
- 239000010959 steel Substances 0.000 description 1
Abstract
The invention discloses a rapid construction method of a large-diameter rock-socketed pile and a structure thereof, wherein the construction method is to complete the well wall reinforced concrete support of a covering layer and the drilling of a bedrock part pile Zhou Yulie through ground drilling and slot pulling. In the process of excavating the bedrock, the combining piles Zhou Jiyan pre-crack the drilled holes, and the bedrock is split through the wedges which are hit on the ground and placed in the bedrock drilled holes, so that the rock excavation of the pile body rock embedding part is completed. The invention is suitable for pile foundation construction with different section shapes, and is particularly suitable for construction of large-diameter medium-hard rock-socketed piles. The invention has high construction flexibility, is suitable for pile foundation construction under different topography and geological conditions, and has simple construction, safety, economy and rapidness.
Description
Technical Field
The invention belongs to the technical field of rock-socketed pile construction, and particularly relates to a rapid construction method and a rapid construction structure of a large-diameter rock-socketed pile.
Background
In the process of building the infrastructure, the pile foundation is widely applied, and the pile foundation can be used for treating slide piles from buildings and bridge foundation piles to landslide. Pile foundation mainly includes two major parts of pile hole excavation and reinforced concrete pouring, and for the construction of pile hole, manual hole digging or rotary digger drilling construction is mainly adopted at present. The safety risk of manual pile hole excavation is high, and the construction time is long; the rotary digging machine has high hole digging efficiency, but the rotary digging machine has high field entering and exiting cost and is limited by space, roads and other conditions. Especially for the middle hard rock embedded pile, the rock blasting is often needed when the hole is manually dug, and the safety influence is large; the rock mass part of the rotary excavator is difficult to drill, the mechanical abrasion is large, and the rotary excavator is uneconomical.
Disclosure of Invention
In order to solve the technical problems, the invention provides a rapid construction method and a rapid construction structure of a large-diameter rock-socketed pile, which are suitable for construction of the large-diameter rock-socketed pile, in particular to construction of a medium-hard rock-socketed pile.
The method provided by the invention specifically comprises the steps of pile foundation size positioning, pile Zhou Lacao drilling arrangement, drilling by a drilling machine, wall protection construction, overburden excavation, bedrock splitting, manual slag removal, pile body concrete pouring and the like. Specifically, the method comprises the following steps:
firstly, the invention is to complete the well wall reinforced concrete support of the covering layer and the drilling of the bedrock part pile Zhou Yulie by the ground drilling and slot pulling. In addition, in the process of excavating the bedrock, the foundation is cracked by combining the pre-cracked drilling of the piles Zhou Jiyan and the wedges placed in the bedrock drilling are hit through the ground to complete the rock excavation of the pile body rock embedding part.
Further, the geological drilling machine gradually drills holes along one circle of the outer contour of the pile foundation, and adjacent drill holes overlap one another to enable one circle of the pile foundation to be completely penetrated by the drill holes through one-time pull grooves; and after the drilling pull groove of the outer contour of the pile foundation is communicated, filling earth and stone residues into the pull groove to the height of the boundary between the bedrock and the covering layer, and tamping. Placing the manufactured retaining wall reinforcement cage into a groove, and then pouring concrete to complete the construction of retaining wall support of the covering layer above the bedrock; after the retaining wall concrete reaches the age, manually excavating downwards step by step to remove the covering layer, and excavating while reinforcing support to ensure the stability of the well wall until the covering layer is excavated. And the bedrock part is driven into wedge split rock in bedrock drilling to excavate downwards step by step, the artificial local pneumatic pick is cleaned, and pouring construction of pile body concrete can be carried out after the excavation cleaning is completed.
In order to achieve the method, the invention also provides a rapid construction structure of the large-diameter rock-embedded pile, which comprises a pile circumference drilling pull groove formed by drilling holes on the ground, wherein a cover layer retaining wall structure formed by filling backfill stone slag to the boundary height of a bedrock and a cover layer, tamping, then lowering a reinforcement cage and pouring concrete is arranged in the pile circumference drilling pull groove, and a reinforced retaining wall supporting anchor rod is arranged along the cover layer retaining wall structure; a hoist basket and a heavy hammer are arranged in the hole pile, and a wedge for splitting rock is arranged in the Kong Zhuangde bedrock.
Compared with the prior art, the invention has the following outstanding substantive features and remarkable progress:
1. the technical scheme of the invention is suitable for pile foundation construction with different section shapes, and is particularly suitable for construction of large-diameter medium-hard rock embedded piles. The technical scheme of the invention has high construction flexibility, is suitable for pile foundation construction under different topography and geological conditions, and is simple, safe, economical and rapid in construction.
2. The well wall reinforced concrete support of the covering layer and the foundation rock partial pile Zhou Yulie are drilled through the ground drilling and grooving, so that the interference construction influence between the manual removal of the covering layer and the well wall support is avoided, the manual underground pile hole excavation time is shortened, unsafe risks are reduced, and the construction progress is accelerated.
3. In the bedrock excavation process, combining stake Zhou Jiyan presplitting drilling, the wedge that places in the bedrock drilling is hit through ground splits the bedrock, accomplishes the rock side excavation of pile body embedded rock part, and the bedrock excavation face is neat pleasing to the eye, has avoided traditional rock side blasting shadow to play the not hard up and other unsafe influences of country rock.
Drawings
FIG. 1 is a diagram of a drilling and broaching layout of a rock-socketed pile;
FIG. 2 is a concrete construction drawing of a rock-socketed pile drilling pull-groove;
FIG. 3 is a diagram of a cover layer excavation and retaining wall reinforcement support for a rock-socketed pile;
FIG. 4 is a diagram of a rock-socketed pile foundation rock excavation;
fig. 5 is a concrete construction diagram of a pile body of a rock-socketed pile.
Reference numerals illustrate: 1-boundary line between the covering layer and the bedrock, 2-drilling pull grooves at the periphery of the pile, 3-covering layer retaining wall structure, 4-backfilling stone slag, 5-reinforcing retaining wall supporting anchor rod, 6-winch hanging basket, 7-heavy hammer, 8-wedge, 9-rock mass splitting crack and 10-pile body reinforced concrete.
Detailed Description
The following description of the embodiments of the present invention will be made clearly and completely with reference to the accompanying drawings, in which it is apparent that the embodiments described are only some embodiments of the present invention, but not all embodiments. All other embodiments, which can be made by those skilled in the art based on the embodiments of the invention without making any inventive effort, are intended to be within the scope of the invention.
In the description of the present invention, it should be noted that, unless explicitly specified and limited otherwise, the terms "mounted," "configured to," "engaged with," "connected to," and the like are to be construed broadly, and may be either fixedly connected, detachably connected, or integrally connected, for example; can be mechanically or electrically connected; can be directly connected or indirectly connected through an intermediate medium, and can be communication between two elements. The specific meaning of the above terms in the present invention will be understood in specific cases by those of ordinary skill in the art.
As shown in fig. 1-5, the present invention is implemented as follows:
the method comprises the steps of firstly positioning a pile, determining the outer contour size of the pile, arranging a peripheral drilling pull groove 2 around the outer contour drilling of the pile, ensuring that the peripheral drilling pull groove 2 can be effectively penetrated, overlapping a part of drilling, gradually drilling the drilling holes at intervals until the height of the pile bottom is reached after the drilling is arranged, and repairing the part which is not overlapped by adopting a drilling tool after all the drilling holes are drilled. The diameter of the drilled holes or the width of the drilled broaching grooves 2 around the pile are calculated and determined according to the thickness of the pile excavation supporting wall.
Filling stone slag into the pile periphery drilling pull groove 2 to the height of a boundary line 1 between the covering layer and the bedrock after finishing the pile periphery drilling pull groove 2, and properly tamping by a drilling tool to fill backfill stone slag 4; and hoisting wall protection steel bars into the pile periphery drilling pull grooves 2 through hoisting equipment, and pouring wall protection concrete until the pile top is high, so as to complete the reinforced concrete wall protection construction of the covering layer part of the rock-socketed pile and form the covering layer wall protection structure 3.
And after the strength of the wall-protecting reinforced concrete reaches 70%, pile hole covering layer excavation is manually carried out, the covering layer excavation adopts layer-by-layer grading excavation from top to bottom, the wall-protecting supporting anchor rods 5 are arranged while excavation, and the excavation slag is discharged through the hoisting basket 6 until the covering layer excavation is completed.
The method comprises the steps of excavating a bedrock part, firstly embedding wedges 8 in bedrock drilling holes, then adopting heavy hammers 7 to strike the wedges 8 one by one, splitting rock bodies to enable the rock bodies around adjacent drilling holes to generate through-rock body splitting cracks 9, cleaning local artificial pneumatic picks, and discharging slag by a winch, thereby completing the bedrock part excavation.
And after the pile holes are cleaned, the pile body reinforced concrete 10 construction of the rock-socketed pile can be carried out.
Although the present invention has been described with reference to the foregoing embodiments, it will be apparent to those skilled in the art that modifications may be made to the embodiments described, or equivalents may be substituted for elements thereof, and any modifications, equivalents, improvements and changes may be made without departing from the spirit and principles of the present invention.
Claims (2)
1. A rapid construction method of a large-diameter rock-socketed pile is characterized by comprising the following steps: the wall reinforced concrete support of the covering layer and the drilling of the bedrock part pile Zhou Yulie are completed through the ground drilling and slot pulling; in the process of excavating the bedrock, combining the Zhou Jiyan pre-splitting drilling holes, splitting the bedrock by hitting wedges placed in the bedrock drilling holes on the ground, and completing the stone excavation of the pile body rock embedding part; the geological drilling machine gradually drills holes along one circle of the outer contour of the pile foundation, and adjacent drill holes overlap one another to enable one circle of the pile foundation to be completely penetrated by the drill holes through one-time slot pulling; filling earth and stone residues into the pull groove after the drill hole on the outer contour of the pile foundation is penetrated to the height of the boundary between the bedrock and the covering layer, and tamping; placing the manufactured retaining wall reinforcement cage into a groove, and then pouring concrete to complete the construction of retaining wall support of the covering layer above the bedrock; after the retaining wall concrete reaches the age, manually excavating downwards step by step to remove the covering layer, and reinforcing support while excavating to ensure the stability of the well wall until the covering layer is excavated; and the bedrock part is driven into wedge split rock in bedrock drilling to excavate downwards step by step, the artificial local pneumatic pick is cleaned, and pouring construction of pile body concrete can be carried out after the excavation cleaning is completed.
2. A large diameter embedded rock pile construction structure fast which characterized in that: the pile periphery drilling pull groove (2) formed by drilling holes on the ground is arranged in the pile periphery drilling pull groove (2), a cover layer retaining wall structure (3) formed by filling backfill stone slag (4) to the height of a boundary line (1) between bedrock and the cover layer, tamping, then lowering a reinforcement cage and pouring concrete is arranged, and a reinforced retaining wall supporting anchor rod (5) is arranged along the cover layer retaining wall structure (3); a hoist basket (6) and a heavy hammer (7) are arranged in the hole pile, and a wedge (8) for splitting rock is arranged in the Kong Zhuangde bedrock.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910080901.9A CN109914395B (en) | 2019-01-28 | 2019-01-28 | Rapid construction method and structure of large-diameter rock-socketed pile |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910080901.9A CN109914395B (en) | 2019-01-28 | 2019-01-28 | Rapid construction method and structure of large-diameter rock-socketed pile |
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| Publication Number | Publication Date |
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| CN109914395A CN109914395A (en) | 2019-06-21 |
| CN109914395B true CN109914395B (en) | 2024-03-01 |
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| CN201910080901.9A Active CN109914395B (en) | 2019-01-28 | 2019-01-28 | Rapid construction method and structure of large-diameter rock-socketed pile |
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Families Citing this family (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110185386A (en) * | 2019-06-27 | 2019-08-30 | 四川公路桥梁建设集团有限公司 | A kind of incompact-deposit bodies stratum concrete guard wall rotary digging fast pore-creating method |
| CN111692932A (en) * | 2020-06-04 | 2020-09-22 | 中交一公局集团有限公司 | Rotary excavating drilling internal auxiliary blasting construction technology for rock-socketed pile foundation |
| CN113154975A (en) * | 2021-05-25 | 2021-07-23 | 四川省交通勘察设计研究院有限公司 | Anti-slide pile pre-drilling blasting excavation method |
| CN114439015A (en) * | 2022-02-28 | 2022-05-06 | 中国建筑第五工程局有限公司 | Construction method for improving rock-socketed depth of large-diameter cast-in-place pile |
Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2000045276A (en) * | 1998-07-24 | 2000-02-15 | Kajima Corp | Method and device for penetrating pile |
| CN101122131A (en) * | 2007-08-14 | 2008-02-13 | 蓝冰 | Foundation pit supporting pile using pipe casting pile embedding in rock |
| CN105714772A (en) * | 2016-02-22 | 2016-06-29 | 北龙建设集团有限公司 | Re-drilling concrete wall protecting method for hole formation of rock-socketed pile in karst region |
| CN210163888U (en) * | 2019-01-28 | 2020-03-20 | 中国电建集团贵阳勘测设计研究院有限公司 | Quick construction structure of major diameter socketed pile |
Family Cites Families (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US7390144B2 (en) * | 2006-02-02 | 2008-06-24 | Nova Group Inc. | Pre-cast/pre-stressed concrete and steel pile and method for installation |
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- 2019-01-28 CN CN201910080901.9A patent/CN109914395B/en active Active
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2000045276A (en) * | 1998-07-24 | 2000-02-15 | Kajima Corp | Method and device for penetrating pile |
| CN101122131A (en) * | 2007-08-14 | 2008-02-13 | 蓝冰 | Foundation pit supporting pile using pipe casting pile embedding in rock |
| CN105714772A (en) * | 2016-02-22 | 2016-06-29 | 北龙建设集团有限公司 | Re-drilling concrete wall protecting method for hole formation of rock-socketed pile in karst region |
| CN210163888U (en) * | 2019-01-28 | 2020-03-20 | 中国电建集团贵阳勘测设计研究院有限公司 | Quick construction structure of major diameter socketed pile |
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| CN109914395A (en) | 2019-06-21 |
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