CN113322925A - Dynamic compaction construction quality monitoring device and method - Google Patents
Dynamic compaction construction quality monitoring device and method Download PDFInfo
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- CN113322925A CN113322925A CN202110533461.5A CN202110533461A CN113322925A CN 113322925 A CN113322925 A CN 113322925A CN 202110533461 A CN202110533461 A CN 202110533461A CN 113322925 A CN113322925 A CN 113322925A
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- module
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- dynamic compaction
- gravity center
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- E—FIXED CONSTRUCTIONS
- E02—HYDRAULIC ENGINEERING; FOUNDATIONS; SOIL SHIFTING
- E02D—FOUNDATIONS; EXCAVATIONS; EMBANKMENTS; UNDERGROUND OR UNDERWATER STRUCTURES
- E02D3/00—Improving or preserving soil or rock, e.g. preserving permafrost soil
- E02D3/02—Improving by compacting
- E02D3/046—Improving by compacting by tamping or vibrating, e.g. with auxiliary watering of the soil
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- E—FIXED CONSTRUCTIONS
- E02—HYDRAULIC ENGINEERING; FOUNDATIONS; SOIL SHIFTING
- E02D—FOUNDATIONS; EXCAVATIONS; EMBANKMENTS; UNDERGROUND OR UNDERWATER STRUCTURES
- E02D1/00—Investigation of foundation soil in situ
- E02D1/08—Investigation of foundation soil in situ after finishing the foundation structure
Abstract
The invention discloses a dynamic compaction construction quality monitoring device and a dynamic compaction construction quality monitoring method, wherein the monitoring device comprises: the gravity center offset angle monitoring module is used for monitoring the gravity center direction of the ram which is hung or adsorbed on the lifting hook, the ram in the falling process and the stable falling hammer; the signal conversion and transmission module is in signal connection with the gravity center offset angle monitoring module and is used for receiving the real-time monitoring data acquired by the gravity center offset angle monitoring module, converting the real-time monitoring data into digital signals and transmitting the digital signals to the outside; and the alarm module is in signal connection with the signal conversion and transmission module and is used for receiving the digital signal output by the signal conversion and transmission module, and if the digital signal exceeds a set threshold value of the alarm module, the alarm function is realized. The invention starts from the monitoring of the central deviation angle of the static and motion states of the rammer, realizes the verticality of the rammer in the foundation dynamic compaction construction process, effectively improves the dynamic compaction construction quality, realizes automatic alarm and improves the construction management efficiency.
Description
Technical Field
The invention relates to the field of foundation construction engineering, in particular to a dynamic compaction construction quality monitoring device and method.
Background
In the construction site, the dynamic compaction method is a method for improving the bearing capacity of a soft foundation and tamping a soil layer by using a heavy hammer falling from a certain height to quickly consolidate the foundation. The main monitoring indexes of the dynamic compaction construction quality comprise: the tamping amount, the tamping times, the tamping point position and the tamping hammer height. The traditional quality monitoring method mainly depends on manual recording, and some patents also realize automatic monitoring modes related to the indexes. However, in the actual construction process, the rammer is often inclined when falling, so that the gravity center is not perpendicular to the ground, and the foundation cannot be tamped flatly. Whether the ram vertically falls can be judged from the state that the ram is suspended or adsorbed on the lifting hook, the running state in the drop hammer and the stable state after the drop hammer. At present, the index lacks an accurate monitoring means, mainly depends on manual auxiliary visual inspection, and cannot be adjusted in time when the rammer is inclined.
Therefore, a new automatic monitoring device is needed to monitor whether the rammer is vertically suspended, whether the hammer dropping process is vertically downward and the stable state after the hammer dropping during the dynamic compaction construction, so as to provide a basis for the position adjustment of the rammer in the construction process and improve the dynamic compaction construction quality.
Based on the situation, the invention provides a dynamic compaction construction quality monitoring device and method, which can effectively solve the problems.
Disclosure of Invention
Aiming at the defects in the prior art, the invention aims to provide a dynamic compaction construction quality monitoring device and method. The invention can effectively solve the quality problems of no tamping, unevenness and the like of the foundation caused by the fact that the rammer is not vertically descended in the dynamic compaction construction process.
In order to solve the technical problems, the invention is realized by the following technical scheme:
in one aspect, the present invention provides a dynamic compaction construction quality monitoring device, including:
the gravity center offset angle monitoring module is used for monitoring the gravity center direction of the ram which is hung or adsorbed on the lifting hook, the ram in the falling process and the stable falling hammer;
the signal conversion and transmission module is in signal connection with the gravity center offset angle monitoring module and is used for receiving the real-time monitoring data acquired by the gravity center offset angle monitoring module, converting the real-time monitoring data into digital signals and transmitting the digital signals to the outside; and
and the alarm module is in signal connection with the signal conversion and transmission module and is used for receiving the digital signal output by the signal conversion and transmission module, and if the digital signal exceeds a set threshold value of the alarm module, the alarm function is realized.
As a preferred technical scheme of the invention, the gravity center offset angle monitoring module comprises an acceleration sensor, a gyro-vertical instrument, a data acquisition circuit, an auxiliary power supply and a signal transmitter, wherein the acceleration sensor is used for measuring the acceleration of the rammer in the falling process, and calculating and outputting the inclination angle relative to the horizontal plane; pitch angle and inclination angle electric signals of the rammer suspended or adsorbed on the lifting hook and the drop hammer after stabilization are respectively output through a pitch synchronizer and an inclination synchronizer in the gyro vertical instrument; the data acquisition circuit is used for suspending or adsorbing the rammer in a lifting hook and the descending of the rammer and acquiring the electric signal of the gravity center offset angle monitoring after the falling hammer is stable in real time.
As a preferable technical scheme of the invention, the signal conversion and transmission module comprises a signal processor, an A/D converter, a wireless transmission module and an integrated circuit power supply.
As a preferred technical solution of the present invention, the signal processor is configured to amplify the signal output by the data acquisition circuit, compensate for a missing signal therein, correct a signal with an excessive deviation, and output a stable signal.
As a preferred technical scheme of the invention, the alarm module comprises a signal receiver, a triode, a relay, an LED rotary lamp, a loudspeaker and a power supply device.
As a preferred technical scheme of the invention, a current threshold value of the maximum deviation angle is set in a relay of the alarm module, and when a signal is converted into a current and passes through the current threshold value, if the current exceeds the threshold value, the LED turn lamp and the loudspeaker are started simultaneously, so that the alarm is realized.
As a preferred embodiment of the present invention, the center of gravity offset angle monitoring module and the signal conversion and transmission module are enclosed by a metal casing.
On the other hand, the invention provides a monitoring method of a dynamic compaction construction quality monitoring device, which comprises the following steps:
s1, monitoring the gravity center direction of the ram which is hung or adsorbed on the lifting hook, the ram falls and the drop hammer is stable through the gravity center offset angle monitoring module;
s2, converting the real-time analog data into digital signals through a signal conversion and transmission module and transmitting the digital signals to an alarm module;
and S3, realizing an alarm function according to the inclination angle change threshold value set by the alarm module, and adjusting the rammer construction process.
Compared with the prior art, the invention has the following advantages and beneficial effects:
(1) the invention provides a dynamic compaction construction quality monitoring device based on monitoring of the central deviation angle of the static and moving states of a rammer, so that the rammer is vertical in the dynamic compaction construction process of a foundation, and the dynamic compaction construction quality is effectively improved.
(2) The invention considers the mode of an automatic monitoring and alarming device, not only gets rid of the traditional mode of depending on manual visual measurement to record, improves the monitoring accuracy, but also realizes automatic alarming and improves the construction management efficiency.
Drawings
FIG. 1 is a schematic view of the principal apparatus of the present invention;
FIG. 2 is a flow chart of the monitoring and alarm of the present invention;
FIG. 3 is a schematic view of the vertical motion monitoring module assembly of the present invention.
Detailed Description
In order that those skilled in the art will better understand the technical solutions of the present invention, the following description of the preferred embodiments of the present invention is provided in conjunction with specific examples, but it should be understood that the drawings are for illustrative purposes only and should not be construed as limiting the patent; for the purpose of better illustrating the embodiments, certain features of the drawings may be omitted, enlarged or reduced, and do not represent the size of an actual product; it will be understood by those skilled in the art that certain well-known structures in the drawings and descriptions thereof may be omitted. The positional relationships depicted in the drawings are for illustrative purposes only and are not to be construed as limiting the present patent.
The present invention will be further described with reference to the following examples and figures 1-3, but the invention is not limited thereto.
As shown in fig. 1 to 3, the present invention provides a dynamic compaction construction quality monitoring device, including: the device comprises a gravity center deviation angle monitoring module 1, a signal conversion and transmission module 2 and an alarm module 3.
The gravity center offset angle monitoring module 1 comprises an acceleration sensor 11, a gyro-vertical instrument 12, a data acquisition circuit 13, an auxiliary power supply 14 and a signal transmitter 15.
Further, the acceleration sensor can adopt a MEMS three-axis acceleration sensor, has X, Y, Z three orthogonal axes, and measures the angle range +/-30 degrees and the precision is 0.1 degrees.
The signal conversion and transmission module 2 comprises a signal processor, an A/D converter, a wireless transmission module DTU and an integrated circuit power supply.
Furthermore, the signal processor adopts a single-chip signal processor which is small in size, low in power consumption and high in universality.
Further, the wireless transmission module DTU adopts a Bluetooth form for transmission.
The alarm module 3 comprises a signal receiver, a triode, a relay, an LED rotary lamp, a loudspeaker and a power supply device.
Further, the center of gravity offset angle monitoring module 1 and the signal conversion and transmission module 2 are encapsulated by a metal shell.
The invention also provides a dynamic compaction construction quality monitoring method, which mainly comprises the following steps:
in the dynamic compaction construction process, the gravity center direction of the rammer suspended or adsorbed in a lifting hook and a rammer descending process and after a drop hammer is stable is monitored through the vertical motion monitoring module, then real-time analog data are converted into digital signals through the signal conversion and transmission module and transmitted to the mobile alarm module, and finally an alarm function is realized according to an inclination angle change threshold value set by the alarm module, and the rammer construction process is adjusted.
When the rammer is hung or adsorbed on the lifting hook, if an alarm occurs, the angle of the rammer is immediately adjusted. And the alarm times of the ram after the ram falls and the drop hammer is stable are counted, and when the alarm times exceed 20% of the tamping times of a single tamping point, additional tamping is needed, so that the proportion is reduced to below 20%.
S1, monitoring center of gravity shift angle of rammer
Further, when the rammer is in a static state, namely the rammer is hung or adsorbed on the lifting hook and the drop hammer is stable, pitch angle electrical signals and inclination angle electrical signals of the rammer are respectively output through a pitch synchronizer and an inclination synchronizer in the gyro vertical instrument.
Further, in the movement state of the rammer, namely in the falling process, the acceleration of the rammer caused by gravity is measured through an acceleration sensor, and the inclination angle relative to the horizontal plane is calculated and output.
Further, a data acquisition circuit acquires the electric signals of the monitoring of the center-of-gravity deviation angle of the rammer in the static and moving states in real time.
S2, signal conversion and transmission
Furthermore, the signal processor is used for amplifying the signals output by the data acquisition circuit, compensating missing signals in the signals, correcting signals with overlarge deviation and outputting stable signals.
Further, the A/D converter converts the analog signal output by the signal processor into a digital signal.
Further, the wireless transmission module DTU transmits the digital signals output by the a/D converter to the alarm module 3, respectively.
Further, the integrated circuit power supply is used for supplying power to the signal conversion and transmission module.
S3 alarm of center of gravity shift
Further, the signal output by the signal conversion and transmission module 2 is amplified through a triode.
Further, a current threshold value of the maximum deviation angle is set in a relay of the alarm module 3, when a signal is converted into a current and passes through the current threshold value, if the current exceeds the threshold value, the LED rotary lamp and the loudspeaker are started simultaneously, and alarm is achieved.
Further, the power supply device provides basic power supply for the alarm module 3.
Technical features (constituent elements/elements of the present invention) of the acceleration sensor, the data acquisition circuit, the signal transmitter, the signal processor, the wireless transmission module, the integrated circuit power supply, the signal receiver, the relay, etc., which are all obtained from conventional commercial sources or manufactured by conventional methods, if not specifically described, should not be considered as innovative points of the present invention, and it will be understood by those skilled in the art that the present invention is not described in further detail.
According to the description and the drawings of the invention, a dynamic compaction construction quality monitoring device can be easily manufactured or used by a person skilled in the art, and can produce the positive effects recorded by the invention.
The above description is only a preferred embodiment of the present invention, and is not intended to limit the present invention in any way, and all simple modifications and equivalent variations of the above embodiments according to the technical spirit of the present invention are included in the scope of the present invention.
Claims (8)
1. The utility model provides a dynamic compaction construction quality monitoring devices which characterized in that, monitoring devices includes:
the gravity center offset angle monitoring module (1) is used for monitoring the gravity center direction of the ram which is hung or adsorbed on the lifting hook, the ram in the falling process and the stable falling hammer;
the signal conversion and transmission module (2) is in signal connection with the gravity center offset angle monitoring module (1) and is used for receiving the real-time monitoring data acquired by the gravity center offset angle monitoring module (1), converting the real-time monitoring data into digital signals and transmitting the digital signals to the outside; and
and the alarm module (3) is in signal connection with the signal conversion and transmission module (2) and is used for receiving the digital signals output by the signal conversion and transmission module (2), and if the digital signals exceed a set threshold value of the alarm module (3), an alarm function is realized.
2. The dynamic compaction construction quality monitoring device according to claim 1, characterized in that: the gravity center offset angle monitoring module (1) comprises an acceleration sensor (11), a gyro-vertical instrument (12), a data acquisition circuit (13), an auxiliary power supply (14) and a signal transmitter (15), wherein the acceleration in the falling process of the rammer is measured through the acceleration sensor (11), and the inclination angle relative to the horizontal plane is calculated and output; pitch angle and inclination angle electric signals of the rammer suspended or adsorbed on a lifting hook and the drop hammer stabilized are respectively output through a pitch synchronizer and an inclination synchronizer in the gyro vertical instrument (12); the data acquisition circuit (13) is used for suspending or adsorbing the rammer in a lifting hook, the falling of the rammer and acquiring the electric signal of the gravity center offset angle monitoring after the falling of the rammer is stable in real time.
3. The dynamic compaction construction quality monitoring device according to claim 1, characterized in that: the signal conversion and transmission module (2) comprises a signal processor, an A/D converter, a wireless transmission module and an integrated circuit power supply.
4. The dynamic compaction construction quality monitoring device according to claim 3, wherein: the signal processor is used for amplifying the signals output by the data acquisition circuit, compensating missing signals in the signals, correcting signals with overlarge deviation and outputting stable signals.
5. The dynamic compaction construction quality monitoring device according to claim 1, characterized in that: the alarm module (3) comprises a signal receiver, a triode, a relay, an LED rotary lamp, a loudspeaker and a power supply device.
6. The dynamic compaction construction quality monitoring device according to claim 5, characterized in that: a current threshold value of the maximum deviation angle is set in a relay of the alarm module (3), when a signal is converted into a current and passes through the current threshold value, if the current exceeds the threshold value, the LED rotary lamp and the loudspeaker are started simultaneously, and alarm is achieved.
7. The dynamic compaction construction quality monitoring device according to claim 1, characterized in that: the gravity center deviation angle monitoring module (1) and the signal conversion and transmission module (2) are packaged by a metal shell.
8. A monitoring method of a dynamic compaction construction quality monitoring device is characterized by comprising the following steps:
s1, monitoring the gravity center direction of the ram which is hung or adsorbed on a lifting hook and the ram during falling and after the ram falls stably through the gravity center offset angle monitoring module (1);
s2, converting the real-time analog data into digital signals through the signal conversion and transmission module (2) and transmitting the digital signals to the alarm module (3);
s3, an alarm function is realized according to the inclination angle change threshold value set by the alarm module (3), and the rammer construction process is adjusted.
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| CN202110533461.5A CN113322925B (en) | 2021-05-17 | 2021-05-17 | Dynamic compaction construction quality monitoring device and method |
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| CN202110533461.5A CN113322925B (en) | 2021-05-17 | 2021-05-17 | Dynamic compaction construction quality monitoring device and method |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113847948A (en) * | 2021-09-23 | 2021-12-28 | 大地巨人(北京)工程科技有限公司 | Dynamic compaction automatic monitoring and analyzing method and digital integrated system |
| CN114777736A (en) * | 2022-04-11 | 2022-07-22 | 连云港港口工程设计研究院有限公司 | Dynamic compaction monitoring angle device |
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