CN109814617A - A kind of pile sinking adaptive vibration frequency adjustment control method - Google Patents
A kind of pile sinking adaptive vibration frequency adjustment control method Download PDFInfo
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- CN109814617A CN109814617A CN201811588757.1A CN201811588757A CN109814617A CN 109814617 A CN109814617 A CN 109814617A CN 201811588757 A CN201811588757 A CN 201811588757A CN 109814617 A CN109814617 A CN 109814617A
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- vibration
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- pile sinking
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Abstract
The invention belongs to underground space engineering fields, and in particular to a kind of pile sinking adaptive vibration frequency adjustment control method；The following steps are included: step 1, carries out exploration calculating for the layered situation and its self-vibration characteristic of the construction site soil body, obtains the thickness and the natural frequency of vibration of each layer soil body；Step 2, the thickness of each layer soil body measured in step 1) and the natural frequency of vibration are input in the software control system of piling machine, step 3, piling machine software control system is according to pile peripheral earth situation, automatic adjusument is carried out to vibration frequency of vibration hammer during piling construction, software control system adjusts vibration hammer Vibration Induced by Pile Sinking frequency and be equal to the current pile peripheral earth natural frequency of vibration according to pile peripheral earth situation, keep pile sinking smooth, completes piling construction；The method of the present invention considers the self-vibration characteristic of stake week layered soil, so that vibration of pile body during piling increases, reduces penetrating resistance, solves the problems, such as that steel-pipe pile and steel sheet pile are difficult to be driven into predetermined depth in the soil body during the pile driving process.
Description
Technical field
The invention belongs to underground space engineering fields, and in particular to a kind of pile sinking adaptive vibration frequency adjusting controlling party
Method.
Background technique
The important component that base pit engineering is built as underground pipe gallery, currently used foundation pit enclosure structure form are main
There are cast-in-situ bored pile, diaphram wall, steel-pipe pile, steel sheet pile and SMW engineering method stake.Wherein, cast-in-situ bored pile and diaphram wall
It is both needed to after soil body grooving, places steel reinforcement cage and casting concrete with pile (wall) body, be difficult to pull out after the completion of foundation pit operation
It removes, the underground space is polluted, potential underground space development after seriously affecting.The stake of SMW engineering method can be in base
Steel therein, therefore the less pollution for caused by the underground space are extracted after the construction of hole, but it remains in the soil body
Cement earth pile also causes influence for the exploitation of the underground space to a certain extent.Steel-pipe pile and steel sheet pile are as foundation pit enclosure
Structure possesses the advantages that steel are recycled entirely, are recycled, and then it is frequently run onto during the pile driving process is difficult to be driven into the soil body
The problem of predetermined depth.
Summary of the invention
The present invention is to solve steel-pipe pile and steel sheet pile pile body is difficult to be driven into soil body predetermined depth during the pile driving process
Technical problem provides a kind of pile sinking adaptive vibration frequency adjustment control method.
In order to solve the above technical problems, the technical scheme adopted by the invention is as follows: a kind of pile sinking adaptive vibration frequency tune
Save control method, comprising the following steps:
Step 1 carries out exploration calculating for the layered situation and its self-vibration characteristic of the construction site soil body, obtains each layer soil body
Thickness and the natural frequency of vibration；
The thickness of each layer soil body measured in step 1) and the natural frequency of vibration are input to the software control system of piling machine by step 2
In system,
Step 3, piling machine software control system is according to pile peripheral earth situation, to vibration of vibration hammer during piling construction
Frequency carries out automatic adjusument,
If pile sinking is smooth, piling construction is completed；
If pile sinking is not smooth, according to pile peripheral earth situation, adjusting vibration hammer Vibration Induced by Pile Sinking frequency is equal to be worked as software control system
The preceding pile peripheral earth natural frequency of vibration, keeps pile sinking smooth, completes piling construction.
Compared with prior art the invention has the following advantages:
It is directed to the piling construction of steel-pipe pile and steel sheet pile, the prior art mostly use use during pile body is set is constant not
The stake machine vibration frequency of change has certain blindness, is difficult to cope with pile sinking of the pile body in the case where adapting to complex geological condition and apply
Work.A kind of pile sinking adaptive vibration frequency adjustment control method provided by the invention considers the self-vibration characteristic of stake week layered soil,
So that vibration of pile body during piling increases, to reduce penetrating resistance, successfully solves steel-pipe pile and steel sheet pile exists
The problem of being driven into predetermined depth in the soil body is difficult in pile driving process.
Detailed description of the invention
Fig. 1 is pile sinking adaptive vibration frequency adjustment control method flow chart of the present invention.
Specific embodiment
Below in conjunction with specific embodiment, the invention will be further described.
A kind of pile sinking adaptive vibration frequency adjustment control method, comprising the following steps:
Step 1 carries out exploration calculating for the layered situation and its self-vibration characteristic of the construction site soil body, obtains each layer soil body
Thickness and the natural frequency of vibration；
The thickness of each layer soil body measured in step 1) and the natural frequency of vibration are input to the software control system of piling machine by step 2
In system,
Step 3, piling machine software control system is according to pile peripheral earth situation, to vibration of vibration hammer during piling construction
Frequency carries out automatic adjusument,
If pile sinking is smooth, piling construction is completed；
If pile sinking is not smooth, according to pile peripheral earth situation, adjusting vibration hammer Vibration Induced by Pile Sinking frequency is equal to be worked as software control system
The preceding pile peripheral earth natural frequency of vibration, keeps pile sinking smooth, completes piling construction.
Further, the calculating of the natural frequency of vibration of each layer soil body uses transfer matrix method, direct method, earth pulsation in step 1
The methods of signalling or mechanical impedance method.
Piling machine software control system is existing system, be can be used directly.
Claims (2)
1. a kind of pile sinking adaptive vibration frequency adjustment control method, which comprises the following steps:
Step 1 carries out exploration calculating for the layered situation and its self-vibration characteristic of the construction site soil body, obtains each layer soil body
Thickness and the natural frequency of vibration；
The thickness of each layer soil body measured in step 1) and the natural frequency of vibration are input to the software control system of piling machine by step 2
In system,
Step 3, piling machine software control system is according to pile peripheral earth situation, to vibration of vibration hammer during piling construction
Frequency carries out automatic adjusument,
If pile sinking is smooth, piling construction is completed；
If pile sinking is not smooth, according to pile peripheral earth situation, adjusting vibration hammer Vibration Induced by Pile Sinking frequency is equal to be worked as software control system
The preceding pile peripheral earth natural frequency of vibration, keeps pile sinking smooth, completes piling construction.
2. a kind of pile sinking adaptive vibration frequency adjustment control method according to claim 1, which is characterized in that step 1
In each layer soil body the natural frequency of vibration calculating use transfer matrix method, direct method, earth pulsation signalling or mechanical impedance method.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201811588757.1A CN109814617A (en) | 2018-12-25 | 2018-12-25 | A kind of pile sinking adaptive vibration frequency adjustment control method |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201811588757.1A CN109814617A (en) | 2018-12-25 | 2018-12-25 | A kind of pile sinking adaptive vibration frequency adjustment control method |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN109814617A true CN109814617A (en) | 2019-05-28 |
Family
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201811588757.1A Pending CN109814617A (en) | 2018-12-25 | 2018-12-25 | A kind of pile sinking adaptive vibration frequency adjustment control method |
Country Status (1)
| Country | Link |
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| CN (1) | CN109814617A (en) |
Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP5932124B1 (en) * | 2015-11-18 | 2016-06-08 | 株式会社オーク | Steel pipe pile construction method |
| CN106555396A (en) * | 2016-06-15 | 2017-04-05 | 刘献刚 | Pressure type pile body construction method of shaking and the vibration hammer equipment for the construction method |
-
2018
- 2018-12-25 CN CN201811588757.1A patent/CN109814617A/en active Pending
Patent Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP5932124B1 (en) * | 2015-11-18 | 2016-06-08 | 株式会社オーク | Steel pipe pile construction method |
| CN106555396A (en) * | 2016-06-15 | 2017-04-05 | 刘献刚 | Pressure type pile body construction method of shaking and the vibration hammer equipment for the construction method |
Non-Patent Citations (2)
| Title |
|---|
| 刘伟: ""液压振动沉桩机沉桩机理及其振幅和频率调节系统研究"", 《中国优秀硕士学位论文全文数据库工程科技Ⅱ辑》 * |
| 高成秀: ""振动锤的参数优化及自适应控制"", 《中国优秀硕士学位论文全文数据库工程科技Ⅱ辑》 * |
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| PB01 | Publication | ||
| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| RJ01 | Rejection of invention patent application after publication |
Application publication date: 20190528 |
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| RJ01 | Rejection of invention patent application after publication |