CN211228636U - Integrated sensor based on high-strain pile testing method - Google Patents
Integrated sensor based on high-strain pile testing method Download PDFInfo
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- CN211228636U CN211228636U CN201921867866.7U CN201921867866U CN211228636U CN 211228636 U CN211228636 U CN 211228636U CN 201921867866 U CN201921867866 U CN 201921867866U CN 211228636 U CN211228636 U CN 211228636U
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- 238000012360 testing method Methods 0.000 title claims abstract description 15
- 230000001133 acceleration Effects 0.000 claims abstract description 27
- 238000000034 method Methods 0.000 claims abstract description 16
- 238000005553 drilling Methods 0.000 claims abstract description 10
- 238000009434 installation Methods 0.000 description 4
- 239000002689 soil Substances 0.000 description 3
- 238000001514 detection method Methods 0.000 description 2
- 230000004075 alteration Effects 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 238000007689 inspection Methods 0.000 description 1
- 230000010354 integration Effects 0.000 description 1
- 238000005259 measurement Methods 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000012544 monitoring process Methods 0.000 description 1
- 238000005070 sampling Methods 0.000 description 1
- 230000003068 static effect Effects 0.000 description 1
- 238000006467 substitution reaction Methods 0.000 description 1
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Abstract
The utility model provides an integrated sensor based on high strain test pile method, the integrated sensor includes strain sensor and acceleration sensor, acceleration sensor is pasted on the right side of strain sensor, there is first drilling above the strain sensor, there is second drilling below the strain sensor; and a third drill hole is arranged below the acceleration sensor. The sensor of the utility model is fast and simple to install, and improves the field work efficiency; the requirement of symmetrically installing the sensors is easy to realize, and the quality of measured data is ensured.
Description
Technical Field
The utility model belongs to replace and make the mould field based on bored concrete pile high strain test especially relates to an integration sensor based on high strain test stake method.
Background
A foundation pile high-strain method test is an advanced dynamic measurement technology for determining the bearing capacity of a single pile and monitoring the motion state of pile soil in the pile sinking process, and is characterized in that two strain sensors and two acceleration sensors are symmetrically arranged near the pile top, and after a heavy hammer impacts the pile top instantly, force and motion speed time-course curves on the installation section of the sensors are picked up; then, different pile-soil mechanical models are adopted to solve a one-dimensional wave equation, and the bearing capacity of a single pile and a series of pile-soil parameters are obtained. Compared with the traditional static test, the method has the obvious advantages of rapidness, low cost, random sampling inspection, rich result parameters and the like.
The high strain method requires the use of two types of sensors, strain sensors and acceleration sensors, and is symmetrically mounted on the pile side surface. Considering the accuracy of measured data, the installation of the sensor must be fixed by drilling holes with electric drills and expansion bolts. This requires 6 holes to be drilled, two for the strain sensors and two for the acceleration sensors. The centers of two drill holes of the strain sensor are connected with the center of the drill hole of the acceleration sensor, and the centers of the two drill holes of the strain sensor are connected with the drill hole of the acceleration sensor on the same plane, wherein the two drill holes of the strain sensor are symmetrically arranged. This plane is theoretically called the detection cross section. Otherwise, the quality of the actually measured data of the high strain method is greatly influenced, and the detection result is further influenced. Practice proves that the requirement is difficult to achieve due to the influence of factors such as complex field environment, flatness of the surface of the pile side, installation effect and the like.
In order to overcome the influence of good and bad drilling holes on the test result of the high-strain pile testing method, the key for improving the success rate is to reduce the number of the drilling holes. We have found that the strain and acceleration changes across the section are detected simultaneously and can be measured simultaneously. Therefore, the acceleration sensor with only one drill hole is superposed on the strain sensor with two drill holes, so that strain data and acceleration data can be acquired simultaneously, and the original six drill holes with four sensors can be reduced to four drill holes with only two integrated sensors. The installation of the sensor is greatly simple, convenient and reliable. The method not only improves the field working efficiency, but also enhances the quality of the measured data.
Disclosure of Invention
In order to solve the technical problem, the utility model provides an integrated sensor based on high strain test pile method, the integrated sensor includes strain sensor and acceleration sensor, acceleration sensor is pasted on the strain sensor right side, there is first drilling above the strain sensor, there is second drilling below the strain sensor; and a third drill hole is arranged below the acceleration sensor.
Preferably, the strain sensor is in width with the acceleration sensor.
Preferably, the second bore of the strain sensor overlaps with the third bore of the acceleration sensor.
Compared with the prior art, the beneficial effects of the utility model are that: the sensor is fast, simple and convenient to install, and the field work efficiency is improved; the requirement of symmetrically installing the sensors is easy to realize, and the quality of measured data is ensured.
Drawings
Fig. 1 is a schematic structural diagram of an integrated sensor of a high strain test pile method.
In the figure: 1-a strain sensor; 2-an acceleration sensor; 3-first drilling; 4-overlapping holes of the second bore and the third bore.
Detailed Description
The technical solutions in the embodiments of the present invention will be described clearly and completely below with reference to the embodiments of the present invention, and it is obvious that the described embodiments are only some embodiments of the present invention, not all embodiments. Based on the embodiments in the present invention, all other embodiments obtained by a person skilled in the art without creative work belong to the protection scope of the present invention.
The present invention is further described below:
example (b):
an integrated sensor based on a high-strain pile testing method comprises a strain sensor and an acceleration sensor, wherein the acceleration sensor is adhered to the right side of the strain sensor, a first drill hole is formed above the strain sensor, and a second drill hole is formed below the strain sensor; and a third drill hole is arranged below the acceleration sensor.
Specifically, the strain sensor and the acceleration sensor have the same width.
In particular, the second bore of the strain sensor overlaps the third bore of the acceleration sensor.
Example 1
When the expansion bolt is installed, a special expansion bolt is placed in the overlapping position of the first drill hole, the second drill hole and the third drill hole on the integrated sensor, the expansion bolt is expanded in concrete by a hand hammer and a thimble, and the overlapping position of the first drill hole, the second drill hole and the third drill hole and the thread section of the expansion bolt are screwed by using special short screws and gaskets and are fixed firmly.
It should be noted that, in this document, moreover, the terms "comprises," "comprising," or any other variation thereof, are intended to cover a non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements does not include only those elements but may include other elements not expressly listed or inherent to such process, method, article, or apparatus.
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 (3)
1. An integrated sensor based on a high-strain pile testing method is characterized by comprising a strain sensor and an acceleration sensor, wherein the acceleration sensor is adhered to the right side of the strain sensor, a first drill hole is formed above the strain sensor, and a second drill hole is formed below the strain sensor; and a third drill hole is arranged below the acceleration sensor.
2. The integrated sensor based on the high-strain test pile method according to claim 1, wherein the strain sensor is consistent with the acceleration sensor in width.
3. The integrated sensor based on the high-strain test pile method according to claim 1, wherein the second drilling hole of the strain sensor is overlapped with the third drilling hole of the acceleration sensor.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201921867866.7U CN211228636U (en) | 2019-11-01 | 2019-11-01 | Integrated sensor based on high-strain pile testing method |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201921867866.7U CN211228636U (en) | 2019-11-01 | 2019-11-01 | Integrated sensor based on high-strain pile testing method |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN211228636U true CN211228636U (en) | 2020-08-11 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201921867866.7U Expired - Fee Related CN211228636U (en) | 2019-11-01 | 2019-11-01 | Integrated sensor based on high-strain pile testing method |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN211228636U (en) |
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2019
- 2019-11-01 CN CN201921867866.7U patent/CN211228636U/en not_active Expired - Fee Related
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| Date | Code | Title | Description |
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| GR01 | Patent grant | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20200811 Termination date: 20211101 |
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| CF01 | Termination of patent right due to non-payment of annual fee |