CN216525808U - Monitoring system for pore pressure and inclination of soil body around constructed bridge pile - Google Patents
Monitoring system for pore pressure and inclination of soil body around constructed bridge pile Download PDFInfo
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- CN216525808U CN216525808U CN202123048729.0U CN202123048729U CN216525808U CN 216525808 U CN216525808 U CN 216525808U CN 202123048729 U CN202123048729 U CN 202123048729U CN 216525808 U CN216525808 U CN 216525808U
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Abstract
The utility model discloses a monitoring system for constructing a hole pressure and inclination of a soil body around a bridge pile, which relates to the field of construction and operation monitoring of traffic infrastructure. Provides a new idea and a new method for the construction of the channel and the bridge in the soft soil area and the monitoring during the service period.
Description
Technical Field
The utility model relates to the field of construction and operation monitoring of traffic infrastructures, in particular to a monitoring system for pore pressure and inclination of a soil body around a bridge pile.
Background
In recent years, with the gradual progress of innovation, socioeconomic performance is rapidly advancing. In the coastal soft soil distribution area of the south of the east, super high-rise buildings and bridges are densely distributed, and the building structure is complex. Meanwhile, the construction of underground pipe galleries and shields, the construction of adjacent channels, the change of underground water levels, the excavation of deep foundation pits and the like can cause unknown deformation, and the stability of the pile foundation, particularly the long-term service performance, is influenced. Complicated stratum geological conditions, underground pipe gallery and shield construction, adjacent channel construction, underground water level change and the like all affect the soil body, and further affect the stability of the surrounding pile foundation, particularly long-term service performance.
Most of the existing soil deformation monitoring systems are used for calculating the deep displacement of a soil body by a fixed guide wheel inclinometer or a soil body layered settlement monitoring technology, and further analyzing the influence of the deformation of the soil body on a pile foundation caused by construction disturbance and the like. However, such monitoring systems are not well applicable to regions with widely distributed soft soil, and firstly, an inclinometer tube of the fixed guide wheel inclinometer is easily extruded and deformed by deep soil in a deep soft soil field and cannot meet the monitoring requirement; secondly, the soil body layered settlement monitoring technology cannot be applied to soft soil areas due to technical reasons; thirdly, because the soft soil has large water content and small permeability coefficient, the common pore pressure sensor cannot obtain accurate pore pressure data and cannot timely and accurately reflect the pore pressure change condition of the soil body, thereby assisting in analyzing the deformation trend of the soil body. Therefore, the prior art methods have certain disadvantages.
Therefore, how to provide a method for constructing a monitoring system for the pore pressure and the inclination of the soil body around the pile in the soft soil area, especially an effective monitoring system for a deep soft soil field, becomes a problem to be solved by the technical staff in the field.
SUMMERY OF THE UTILITY MODEL
The utility model is used for constructing a monitoring system for the pore pressure and the inclination of a soil body around a bridge pile, and is characterized by comprising a pore pressure monitoring system, an inclination monitoring system and a data acquisition and control system.
The pore pressure monitoring system consists of a pore pressure monitoring sensor, high-permeability dense fine sand and a sensor extension line A; the inclination monitoring system mainly comprises a high-precision digital inclination measuring sensor, a hard polyvinyl chloride protective pipe and a sensor extension line B; the data acquisition and control system consists of a data acquisition and transmission module, an electrical module and a control module; the data acquisition and transmission module is respectively connected with the pore pressure monitoring sensor and the high-precision digital inclination measuring sensor through a sensor extension line A and a sensor extension line B; the electric module respectively supplies power to the data acquisition and transmission module and the control module; the data acquisition and transmission module stores acquired data into the control module and uploads the data to the terminal through the control module; the data acquisition and transmission module controls the acquisition time, frequency and number of data through the control module and sets an early warning threshold value.
Furthermore, among the monitoring system, the monitoring section is located between pile foundation and the shore protection, allows evenly to select two at least driling on the monitoring section according to site conditions, is used for installing pore pressure monitoring system and slope monitoring system respectively, and monitoring drilling aperture is the diameter twice of chooseing for use monitoring sensor at least.
Furthermore, in the pore pressure monitoring system, the pore pressure monitoring system is installed by drilling for at least 10 meters according to the construction and operation depth of a navigation channel, and at least 3 pore pressure monitoring sensors are distributed for monitoring the pore pressure.
Furthermore, in the pore pressure monitoring system, in order to avoid mutual influence, each pore pressure monitoring sensor is independently wired, is suspended into a monitoring borehole according to the arrangement depth, and is led out to the ground through a sensor extension line.
Furthermore, in the pore pressure monitoring system, the pore pressure monitoring sensor is firstly suspended in the monitoring drill hole according to the arrangement depth, and is filled by adopting high-permeability fine sand.
Furthermore, in the inclination monitoring system, each high-precision digital inclination measuring sensor is fixed in a rigid polyvinyl chloride protective pipe with the length of 0.5 meter, the hollow part is filled with foam, and the rigid polyvinyl chloride protective pipe is sealed up and down.
Furthermore, in the inclination monitoring system, in order to avoid mutual influence, each high-precision digital inclination measuring sensor is independently wired, and is firstly suspended in the monitoring drill hole according to the arrangement depth and then led out to the ground through the sensor extension line.
Furthermore, in the data acquisition and control system, the data acquisition and transmission module is connected with the control module and then is respectively connected with the electrical module, and the electrical module is independently arranged outside the box body, so that the charging maintenance is convenient.
Further, in the data acquisition and control system, the data acquisition and transmission module converts acquired digital signals into electric signals and outputs the electric signals.
Furthermore, in the data acquisition and control system, when the data acquisition and control system is powered on, the data acquisition and transmission module is respectively connected with the pore pressure monitoring sensor and the high-precision digital inclination measuring sensor through a sensor extension line A and a sensor extension line B; the electric module supplies power to the pore pressure monitoring sensor and the high-precision digital inclination measuring sensor through the data acquisition and transmission module.
Drawings
The utility model will be further explained with reference to the drawings.
The foregoing and other advantages of the utility model will become more apparent from the following detailed description of the utility model when taken in conjunction with the accompanying drawings.
Fig. 1 is a schematic view of the overall structure of the present invention.
Fig. 2 is a schematic view of an orifice pressure monitoring system according to an embodiment.
Fig. 3 is a schematic diagram of an inclination monitoring system according to an embodiment.
Fig. 4 is a schematic diagram of a data acquisition and control system according to an embodiment.
In the figure: 1-pore pressure monitoring system, 2-slope monitoring system, 3-data acquisition and control system, 101-pore pressure monitoring sensor, 102-high permeable fine sand, 103-sensor extension line A, 201-high precision digital inclinometry sensor, 202-rigid polyvinyl chloride protective pipe, 203-sensor extension line B, 301-data acquisition transmission module, 302-electrical module, 303-control module.
Detailed Description
As shown in fig. 1-4; in fig. 1, a borehole is drilled and sensor monitoring is placed between the bearing platform and the channel revetment.
The utility model provides a monitoring system for monitoring pore pressure and inclination of a soil body around a constructed bridge pile, as shown in figures 2-4, wherein the monitoring system comprises: the device comprises a pore pressure monitoring system 1, an inclination monitoring system 2 and a data acquisition and control system 3.
The pore pressure monitoring system 1 consists of a pore pressure monitoring sensor 101, high-permeability fine sand 102 and a sensor extension line A103; the inclination monitoring system 2 mainly comprises a high-precision digital inclination measuring sensor 201, a hard polyvinyl chloride protective pipe 202 and a sensor extension line B203; the data acquisition and control system 3 consists of a data acquisition and transmission module 301, an electrical module 302 and a control module 303; the operation energy of the data acquisition and transmission module 301 is provided by the electrical module 302, and the acquisition time, frequency and number of data are controlled by the control module 303, and an early warning threshold value is set.
In the monitoring system, the monitoring section is located between the pile foundation and the revetment, at least two drill holes are allowed to be uniformly selected on the monitoring section according to field conditions and are respectively used for installing the pore pressure monitoring system 1 and the inclination monitoring system 2, the aperture of the monitoring drill hole needs to be at least twice of the diameter of a selected monitoring sensor, and the monitoring drill hole is flexibly adjusted according to the engineering geological conditions of a monitoring target area. And drilling according to the channel construction and the operation depth to install the pore pressure monitoring system 1 for at least 10 meters, and selecting at least 3 pore pressure monitoring sensors 101 distributed at different depths according to the engineering geological conditions of the monitored target area for pore pressure monitoring.
In the pore pressure monitoring system 1, in order to avoid mutual influence, each pore pressure monitoring sensor 101 is independently wired, and is suspended into a monitoring borehole according to the arrangement depth, and is led out to the ground through a sensor extension line A103, and the pore pressure monitoring sensors 101 are suspended into the monitoring borehole in advance according to the arrangement depth and are filled by adopting high-permeability fine sand 102.
In the inclination monitoring system 2, each high-precision digital inclination measuring sensor 201 is fixed in a rigid polyvinyl chloride protective pipe 202 with the length of 0.5 meter, a hollow part is filled with foam, and the rigid polyvinyl chloride protective pipe 202 is sealed up and down. In order to avoid mutual influence, each high-precision digital inclinometer 201 is independently wired, is suspended into the monitoring borehole in advance according to the layout depth and is led out to the ground through the sensor extension line 103.
The data acquisition and transmission module 301 is respectively connected with the pore pressure monitoring sensor 101 and the high-precision digital inclination measuring sensor 201 through a sensor extension line A103 and a sensor extension line B203; the electric module 302 respectively supplies power to the data acquisition and transmission module 301 and the control module 303; the data acquisition and transmission module 301 stores acquired data into the control module 303, and uploads the data to the terminal through the control module 303; the data acquisition and transmission module 301 controls the acquisition time, frequency and number of data through the control module 303 and sets an early warning threshold.
In the data acquisition and control system 3, the data acquisition transmission module 301 is connected with the control module 303 and then respectively connected with the electrical module 302, and the electrical module 302 is independently arranged outside the box body, so that the charging maintenance is convenient.
When the data acquisition and control system 3 is powered on, the data acquisition and transmission module 301 is respectively connected with the pore pressure monitoring sensor 101 and the high-precision digital inclination measuring sensor 201 through a sensor extension line A103 and a sensor extension line B203; the electrical module 302 supplies power to the pore pressure monitoring sensor 101 and the high-precision digital inclination measuring sensor 201 through the data acquisition and transmission module 301.
When the device is used, the pore pressure monitoring sensor 101, the high-precision digital inclination measuring sensor 201, the sensor extension line A103, the sensor extension line B203 and the data acquisition and control system 3 are connected in place, the data acquisition and control system 3 is powered on, and the acquisition time is set on site or remotely. Five minutes before the set time is reached, the electric module 302 supplies power to the pore pressure monitoring sensor 101 and the high-precision digital inclination measuring sensor 201 through the control module 303; the frequency, number, mode, etc. of sensor acquisition is set by the control module 303.
After the set time is reached, the pore pressure monitoring sensor 101 and the high-precision digital inclination measuring sensor 201 automatically acquire data, the acquired data are collected to the control module 303 through the sensor extension line A103 and the sensor extension line B203, digital signals are converted into electromagnetic spectrum, the packaged data are uploaded to the communication terminal through the built-in system Internet of things, and the sensor data acquisition frequency is different and approximately takes one to ten minutes according to the number of working sensors in the whole process.
Claims (10)
1. The monitoring system is used for constructing a hole pressure and inclination monitoring system of a soil body around a bridge pile, and is characterized by comprising a hole pressure monitoring system (1), an inclination monitoring system (2) and a data acquisition and control system (3);
the pore pressure monitoring system (1) consists of a pore pressure monitoring sensor (101), high-permeability dense fine sand (102) and a sensor extension line A (103); the inclination monitoring system (2) mainly comprises a high-precision digital inclination measuring sensor (201), a rigid polyvinyl chloride protective pipe (202) and a sensor extension line B (203); the data acquisition and control system (3) consists of a data acquisition and transmission module (301), an electrical module (302) and a control module (303); the data acquisition and transmission module (301) is respectively connected with the pore pressure monitoring sensor (101) and the high-precision digital inclination measuring sensor (201) through a sensor extension line A (103) and a sensor extension line B (203); the electric module (302) respectively supplies power to the data acquisition and transmission module (301) and the control module (303); the data acquisition and transmission module (301) stores acquired data into the control module (303), and then the acquired data are uploaded to the terminal through the control module (303); the data acquisition and transmission module (301) controls the acquisition time, frequency and number of data through the control module (303) and sets an early warning threshold value.
2. The system for monitoring pore pressure and inclination of a soil body around a pile of a bridge according to claim 1, wherein: in the monitoring system, the monitoring section is located between the pile foundation and the revetment, at least two drill holes are allowed to be uniformly selected on the monitoring section according to field conditions and are respectively used for installing the pore pressure monitoring system (1) and the inclination monitoring system (2), and the aperture of the monitoring drill hole is at least twice of the diameter of a selected monitoring sensor.
3. The system for monitoring pore pressure and inclination of a soil body around a pile of a bridge according to claim 1, wherein: in the pore pressure monitoring system (1), at least 10 meters of pore pressure monitoring system (1) is installed according to channel construction and operation depth drilling, and at least 3 pore pressure monitoring sensors (101) are arranged for monitoring pore pressure.
4. The system for monitoring pore pressure and inclination of a soil body around a pile of a bridge according to claim 1, wherein: in the hole pressure monitoring system (1), in order to avoid mutual influence, each hole pressure monitoring sensor (101) is independently wired, and is suspended into a monitoring drill hole according to the arrangement depth, and is led out to the ground through a sensor extension line A (103).
5. The system for monitoring pore pressure and inclination of a soil body around a pile of a bridge according to claim 1, wherein: in the pore pressure monitoring system (1), a pore pressure monitoring sensor (101) is suspended into a monitoring borehole in sequence according to the arrangement depth, and is filled by adopting high-permeability dense fine sand (102).
6. The system for monitoring pore pressure and inclination of a soil body around a pile of a bridge according to claim 1, wherein: in the inclination monitoring system (2), each high-precision digital inclination measuring sensor (201) is fixed in a rigid polyvinyl chloride protective pipe (202) with the length of 0.5 meter, a hollow part is filled with foam, and the rigid polyvinyl chloride protective pipe (202) is sealed up and down.
7. The system for monitoring pore pressure and inclination of a soil body around a pile of a bridge according to claim 1, wherein: in the inclination monitoring system (2), in order to avoid mutual influence, each high-precision digital inclination measuring sensor (201) is independently wired, and is firstly suspended into a monitoring drill hole according to the arrangement depth and then led out to the ground through a sensor extension line A (103).
8. The system for monitoring pore pressure and inclination of a soil body around a pile of a bridge according to claim 1, wherein: in the data acquisition and control system (3), the data acquisition transmission module (301) is connected with the control module (303) and then is respectively connected with the electrical module (302), and the electrical module (302) is independently arranged outside the box body, so that the charging maintenance is convenient.
9. The system for monitoring pore pressure and inclination of a soil body around a pile of a bridge according to claim 1, wherein: in the data acquisition and control system (3), a data acquisition and transmission module (301) converts acquired digital signals into electric signals and outputs the electric signals.
10. The system for monitoring pore pressure and inclination of a soil body around a pile of a bridge according to claim 1, wherein: when the data acquisition and control system (3) is electrified, the data acquisition and transmission module (301) is respectively connected with the pore pressure monitoring sensor (101) and the high-precision digital inclination measuring sensor (201) through a sensor extension line A (103) and a sensor extension line B (203); the electric module (302) supplies power to the pore pressure monitoring sensor (101) and the high-precision digital inclination measuring sensor (201) through the data acquisition and transmission module (301).
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| Application Number | Priority Date | Filing Date | Title |
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| CN202123048729.0U CN216525808U (en) | 2021-12-07 | 2021-12-07 | Monitoring system for pore pressure and inclination of soil body around constructed bridge pile |
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| CN202123048729.0U CN216525808U (en) | 2021-12-07 | 2021-12-07 | Monitoring system for pore pressure and inclination of soil body around constructed bridge pile |
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| CN216525808U true CN216525808U (en) | 2022-05-13 |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN116718296A (en) * | 2023-05-31 | 2023-09-08 | 重庆大学 | Intelligent monitoring system and equipment for stress of rubber support |
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2021
- 2021-12-07 CN CN202123048729.0U patent/CN216525808U/en active Active
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN116718296A (en) * | 2023-05-31 | 2023-09-08 | 重庆大学 | Intelligent monitoring system and equipment for stress of rubber support |
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