CN111395323A - Pressure sensor-based super-irrigation prevention control device and application method thereof - Google Patents
Pressure sensor-based super-irrigation prevention control device and application method thereof Download PDFInfo
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- CN111395323A CN111395323A CN202010287098.9A CN202010287098A CN111395323A CN 111395323 A CN111395323 A CN 111395323A CN 202010287098 A CN202010287098 A CN 202010287098A CN 111395323 A CN111395323 A CN 111395323A
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- E—FIXED CONSTRUCTIONS
- E02—HYDRAULIC ENGINEERING; FOUNDATIONS; SOIL SHIFTING
- E02D—FOUNDATIONS; EXCAVATIONS; EMBANKMENTS; UNDERGROUND OR UNDERWATER STRUCTURES
- E02D5/00—Bulkheads, piles, or other structural elements specially adapted to foundation engineering
- E02D5/22—Piles
- E02D5/34—Concrete or concrete-like piles cast in position ; Apparatus for making same
- E02D5/38—Concrete or concrete-like piles cast in position ; Apparatus for making same making by use of mould-pipes or other moulds
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- E—FIXED CONSTRUCTIONS
- E02—HYDRAULIC ENGINEERING; FOUNDATIONS; SOIL SHIFTING
- E02D—FOUNDATIONS; EXCAVATIONS; EMBANKMENTS; UNDERGROUND OR UNDERWATER STRUCTURES
- E02D15/00—Handling building or like materials for hydraulic engineering or foundations
- E02D15/02—Handling of bulk concrete specially for foundation or hydraulic engineering purposes
- E02D15/04—Placing concrete in mould-pipes, pile tubes, bore-holes or narrow shafts
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01L—MEASURING FORCE, STRESS, TORQUE, WORK, MECHANICAL POWER, MECHANICAL EFFICIENCY, OR FLUID PRESSURE
- G01L19/00—Details of, or accessories for, apparatus for measuring steady or quasi-steady pressure of a fluent medium insofar as such details or accessories are not special to particular types of pressure gauges
- G01L19/08—Means for indicating or recording, e.g. for remote indication
- G01L19/12—Alarms or signals
Abstract
An over-irrigation prevention control device based on a pressure sensor and a using method thereof belong to the technical field of foundation cast-in-place pile construction, solve the problems of over-irrigation and under-irrigation of a concrete cast-in-place pile and the like, save materials and funds, and are simple to operate. The device comprises a protective cylinder, a vertical rod, a sensor and a pressure early warning system, wherein a cover plate is arranged above the protective cylinder, and the upper part of the outer side wall of the protective cylinder is provided with an anti-over-irrigation scale; the vertical rod is arranged at the center of the lower surface of the cover plate, a limiting nut is arranged at the lower end of the vertical rod, a fixed plate is fixedly arranged at the position, close to the lower position, in the middle of the vertical rod, a movable plate is movably arranged on the vertical rod below the fixed plate, a plurality of slurry through holes are formed in the cover plate, the fixed plate and the movable plate, a first pressure sensor is arranged on the inner wall of the casing close to the end of the lower stroke position of the movable plate, and a second pressure sensor is arranged; the pressure early warning system comprises a digital conversion module, an electronic development board, an alarm lamp, a buzzer alarm and a PC (personal computer) terminal.
Description
Technical Field
The invention belongs to the technical field of foundation filling pile construction, and particularly relates to an anti-over-filling control device based on a pressure sensor and a use method thereof.
Background
The use of the existing cast-in-place piles is increasing, and a plurality of social problems are brought along, such as: the main reasons for the resource waste, economic waste and environmental pollution are caused by the over-irrigation of the cast-in-place piles. The traditional method for detecting the over-filling of the cast-in-place pile comprises the following two methods: one is to hang a heavy hammer on the measuring rope for detection; one is to directly take a steel bar with proper length for sounding. The two measurement methods are mainly sensed by manual experience and hand feeling, so that the measurement methods are not very accurate and the conditions of over-irrigation and less-irrigation often occur. The occurrence of the over-irrigation condition necessarily causes a series of wastes; if the condition of few irrigation occurs, pile repair at the later stage is complicated, the construction period is prolonged, and the quality of a pile body is influenced.
Disclosure of Invention
In order to overcome the defects of the prior art and solve the technical problem of resource waste caused by excessive filling of a filling pile of a traditional excessive filling prevention device, the invention provides an excessive filling prevention control device based on a pressure sensor and a use method thereof.
The design concept of the invention is as follows: because the pressure value of mud and concrete has obvious difference, so the pressure that shows when two kinds of materials reach pressure sensor has obvious difference, use this as the basis, set for a suitable value in pressure sensor, do not report to the police when mud reaches pressure sensor height, when the concrete reaches pressure sensor, can arouse alarm lamp or buzzer warning, and the weight of whole device is lighter than the weight of concrete, along with the concrete pouring has surpassed pile bolck elevation, whole device can be pushed out a section distance in the entrance to a cave by the concrete, make the device extrude from the concrete, make things convenient for pulling out of whole device.
The invention is realized by the following technical scheme.
The utility model provides a prevent surpassing and irritate controlling means based on pressure sensor, it includes protects a section of thick bamboo, pole setting, sensor and pressure early warning system, its characterized in that:
the integral gravity of the over-irrigation prevention control device is smaller than that of concrete, the protective cylinder is arranged in the vertical direction, a cover plate is arranged above the protective cylinder, the supporting rod is arranged at the upper part of the protective cylinder and penetrates through the protective cylinder along the diameter direction of the protective cylinder, the supporting rod is tough and not easy to break, an over-irrigation prevention scale is arranged at the upper part of the outer side wall of the protective cylinder, a zero scale line of the over-irrigation prevention scale is flush with the upper end face of the protective cylinder, and positions of 50cm, 80cm and 100cm scale lines of the over-irrigation prevention scale are marked in red; the vertical rod is vertically and downwardly installed at the center of the lower surface of the cover plate, a limiting nut is arranged at the lower end of the vertical rod, a fixed plate is fixedly installed at the position, close to the lower position, of the middle of the vertical rod, the distance between the fixed plate and the lower end face of the vertical rod is 100-150 cm, a movable plate is movably installed on the vertical rod below the fixed plate, a plurality of slurry through holes are formed in the cover plate, the fixed plate and the movable plate, the diameter of each slurry through hole is smaller than the particle size of concrete particles, the weight of the movable plate is larger than that of slurry and smaller than that of concrete, the movable plate moves upwards along the vertical rod under the action of the concrete in a working state, a first pressure sensor is arranged on the inner wall;
the pressure early warning system comprises a digital conversion module, an electronic development board, an alarm lamp, a buzzer alarm and a PC (personal computer) end, wherein a first pressure sensor is electrically connected with a signal input end of the first digital conversion module through a signal line, a signal output end of the first digital conversion module is electrically connected with a signal input end of the first electronic development board, and a signal output end of the first electronic development board is respectively electrically connected with a signal input end of the buzzer alarm and a signal input end of the PC end; the second pressure sensor is electrically connected with a signal input end of a second digital conversion module through a signal line, a signal output end of the second digital conversion module is electrically connected with a signal input end of a second electronic development board, and a signal output end of the second electronic development board is electrically connected with a signal input end of an alarm lamp and a signal input end of a PC end respectively.
Furthermore, the pile casings are arranged in a splicing mode, and the pile casings are connected end to end in the linear direction according to the excavation depth and the length of the pile body; the pole setting sets up to the concatenation formula, and a plurality of pole settings are according to the length of protecting a section of thick bamboo along linear direction end to end.
Further, the diameter of the casing is 10-20 cm.
Further, the lower surface of the fixing plate is flush with the elevation of the pile top.
Further, performing heavy labor at 300N/m-400N/m, performing heavy labor at 50N/m-100N/m, and performing heavy labor at 23600N/m-2450N/m.
A use method of an anti-over-irrigation control device based on a pressure sensor comprises the following steps:
s1, installing an over-irrigation prevention control device: firstly, a plurality of pile casings are connected end to end in the linear direction according to the excavation depth of a pile body grouting hole and the length of the pile body, and a plurality of upright rods are connected end to end in the linear direction according to the length of the pile casings; secondly, a limiting nut is mounted at the lower end of the upright, a fixed plate is fixedly mounted at the position, close to the lower position, of the middle of the upright, the distance between the fixed plate and the lower end face of the upright is 100-150 cm, a second pressure sensor is mounted on the lower surface of the fixed plate, and a movable plate is movably mounted on the upright below the fixed plate; thirdly, fixedly installing the upper end of the upright rod at the center of the lower surface of the cover plate, covering the cover plate above the pile casing, installing a first pressure sensor on the inner wall of the pile casing close to the final position of the downward stroke of the movable plate, and electrically connecting the first pressure sensor and the second pressure sensor with a pressure early warning system; finally, the supporting rod penetrates through the upper part of the protective cylinder along the diameter direction of the protective cylinder to complete the installation of the over-irrigation prevention control device;
s2, sequentially carrying out the following pile grouting process:
s21, inserting the over-filling prevention control device installed in the step S1 into slurry in the pile body grouting hole in a hanging mode, enabling the slurry to enter an inner cavity of the pile casing from the bottom of the pile casing, enabling the liquid level of the slurry to be higher than the position of the fixing plate, enabling the first pressure sensor and the second pressure sensor to detect the initial state pressure value of the slurry respectively, and enabling the alarm lamp and the buzzer alarm not to work;
s22, concrete is poured into the slurry, the concrete layer is located below the slurry layer due to the fact that the weight of the concrete is larger than that of the slurry, the liquid level of the slurry rises along with the continuous rising of the liquid level of the poured concrete, the slurry rises continuously after passing through the slurry through holes formed in the movable plate due to the fact that the weight of the movable plate is larger than that of the slurry, the pressure value detected by the first pressure sensor and the second pressure sensor displayed on the PC end is equal to the pressure value detected when the over-filling prevention control device is initially placed into the slurry, the pressure value does not reach an alarm preset value, the alarm lamp is not bright, and the buzzer alarm does not sound;
s23, along with the continuous pouring of the concrete, the liquid level of the concrete rises to the position of the movable plate, because the diameter of the slurry through hole is smaller than the particle size of concrete particles, and the weight of the movable plate is smaller than that of the concrete, the continuously poured concrete pushes the movable plate to rise continuously along the vertical rod, when the liquid level of the concrete reaches the position of the first pressure sensor, the pressure value detected by the first pressure sensor is larger than the initial state pressure value, and the pressure value is larger than the alarm preset value, the alarm lamp is turned on, and the buzzer alarm does not sound;
s23, along with the continuous pouring of the concrete, the liquid level of the slurry continuously rises, the slurry continuously rises after passing through a slurry through hole formed in the fixing plate, when the liquid level of the concrete reaches the position of a second pressure sensor, the pressure value detected by the second pressure sensor is larger than the initial state pressure value, and the pressure value is larger than the alarm preset value, a buzzer alarms, the liquid level of the concrete reaches the pile top elevation position, and the pile body grouting is completed;
s3, after the liquid level of the concrete reaches the elevation of the pile body, a certain height needs to be continuously poured to ensure the strength of the pile body, the concrete is continuously poured into the pile body grouting hole, the concrete layer pushes the whole over-filling prevention control device to continuously rise along the pile body grouting hole, and when the red scale mark of the over-filling prevention scale does not appear at the hole opening of the pile body grouting hole, the over-filling height does not reach 50cm, and the concrete needs to be continuously poured; when the red scale mark of the uppermost anti-over-grouting scale exceeds the hole of the pile body grouting hole, the over-grouting height is 50cm but not 80cm, the poured concrete meets the standard requirement, and the concrete pouring is stopped; if two red scale lines appear outside the hole of the pile body grouting hole, the over-grouting height reaches 80cm, but not 1m, and the grouting needs to be stopped immediately; if three red scale lines appear outside the hole of the pile body grouting hole, the pouring height is 1m higher than the standard requirement, and the pouring is stopped immediately.
Compared with the prior art, the invention has the beneficial effects that:
the pressure sensor-based over-filling prevention control device and the use method thereof can give obvious light and sound reminding to workers in a construction site, can give early warning when the poured concrete does not reach the pile top elevation or reach the elevation, and can display the over-filling height range value.
In a word, the invention well solves the problems of over-irrigation, under-irrigation and the like of the cast-in-place concrete pile, provides guarantee for protecting the environment, saves materials and funds, has simple operation and is suitable for popularization and use in engineering construction.
Drawings
FIG. 1 is a schematic view of the structure of the present invention.
In the figure, 1 is a protection cylinder, 2 is a cover plate, 3 is a fixed plate, 4 is a movable plate, 5 is a support rod, 6 is a second pressure sensor, 7 is a first pressure sensor, 8 is a vertical rod, 9 is an anti-overfilling scale, 10 is a limit nut, and 11 is a pressure early warning system.
Detailed Description
The following examples are intended to illustrate the invention but are not intended to limit the scope of the invention. Unless otherwise specified, the examples follow conventional experimental conditions. In addition, it will be apparent to those skilled in the art that various modifications or improvements can be made to the material components and amounts in these embodiments without departing from the spirit and scope of the invention as defined in the appended claims.
As shown in figure 1, the super irrigation prevention control device based on the pressure sensor comprises a protective cylinder 1, a vertical rod 8, a sensor and a pressure early warning system 11, and is characterized in that:
the over-irrigation preventing control device is characterized in that the overall weight of the over-irrigation preventing control device is smaller than that of concrete, the protective cylinder 1 is arranged in the vertical direction, the cover plate 2 is arranged above the protective cylinder 1, the support rod 5 is arranged at the upper part of the protective cylinder 1, the support rod 5 penetrates through the protective cylinder 1 in the diameter direction of the protective cylinder 1, the support rod 5 is tough and is not easy to break, the over-irrigation preventing scale 9 is arranged at the upper part of the outer side wall of the protective cylinder 1, the zero scale line of the over-irrigation preventing scale 9 is flush with the upper end face of the protective cylinder, and the positions of the scale lines of 50cm, 80cm and 100cm of; the vertical rod 8 is vertically and downwardly installed at the center of the lower surface of the cover plate 2, a limiting nut 10 is arranged at the lower end of the vertical rod 8, a fixed plate 3 is fixedly installed at the position, close to the lower position, of the middle of the vertical rod 8, the distance between the fixed plate 3 and the lower end surface of the vertical rod 8 is 100-150 cm, a movable plate 4 is movably installed on the vertical rod 8 below the fixed plate 3, a plurality of slurry through holes are formed in the cover plate 2, the fixed plate 3 and the movable plate 4, the diameter of each slurry through hole is smaller than the particle size of concrete particles, the weight of the movable plate 4 is larger than that of slurry and smaller than that of concrete, the movable plate 4 moves upwards along the vertical rod 8 under the action of the concrete in a working state, a first pressure sensor 7 is arranged at the position, close to the end of;
the pressure early warning system 11 comprises a digital conversion module, an electronic development board, an alarm lamp, a buzzer alarm and a PC (personal computer) end, wherein a first pressure sensor is electrically connected with a signal input end of the first digital conversion module through a signal line, a signal output end of the first digital conversion module is electrically connected with a signal input end of the first electronic development board, and a signal output end of the first electronic development board is respectively electrically connected with a signal input end of the buzzer alarm and a signal input end of the PC end; the second pressure sensor 6 is electrically connected with a signal input end of a second digital conversion module through a signal line, a signal output end of the second digital conversion module is electrically connected with a signal input end of a second electronic development board, and a signal output end of the second electronic development board is electrically connected with a signal input end of an alarm lamp and a signal input end of a PC end respectively.
Furthermore, the pile casings 1 are arranged in a splicing mode, and the pile casings 1 are connected end to end in the linear direction according to the excavation depth and the length of the pile body; the pole setting 8 sets up to the concatenation formula, and a plurality of pole settings 8 are according to the length of protecting a section of thick bamboo 1 along linear direction end to end.
Further, the diameter of the casing 1 is 10-20 cm.
Further, the lower surface of the fixing plate 3 is flush with the elevation of the pile top.
Further, performing a heavy fruit year at 300N/m-400N/m, performing a heavy fruit year at 50N/m-100N/m, performing a heavy fruit year at 23600N/m-2450N/m, and performing a heavy fruit year at 23600N/m.
A use method of an anti-over-irrigation control device based on a pressure sensor comprises the following steps:
s1, installing an over-irrigation prevention control device: firstly, a plurality of pile casings 1 are connected end to end in the linear direction according to the excavation depth of a pile body grouting hole and the length of the pile body, and a plurality of upright rods 8 are connected end to end in the linear direction according to the length of the pile casings 1; secondly, a limiting nut 10 is installed at the lower end of the upright post 8, a fixed plate 3 is fixedly installed at the position, close to the lower position, of the middle of the upright post 8, the distance between the fixed plate 3 and the lower end face of the upright post 8 is 100-150 cm, a second pressure sensor 6 is installed on the lower surface of the fixed plate 3, and a movable plate 4 is movably installed on the upright post 8 below the fixed plate 3; thirdly, fixedly installing the upper end of the upright rod 8 at the center of the lower surface of the cover plate 2, then covering the cover plate 2 above the casing 1, installing a first pressure sensor 7 on the inner wall of the casing 1 close to the end of the downward stroke position of the movable plate 4, and electrically connecting the first pressure sensor 7 and the second pressure sensor 6 with a pressure early warning system 11; finally, the support rod 5 penetrates through the upper part of the protective cylinder 1 along the diameter direction of the protective cylinder 1 to complete the installation of the over-irrigation prevention control device;
s2, sequentially carrying out the following pile grouting process:
s21, inserting the over-filling prevention control device installed in the step S1 into slurry in a pile body grouting hole in a hanging mode, enabling the slurry to enter an inner cavity of the pile casing 1 from the bottom of the pile casing 1, enabling the liquid level of the slurry to be higher than the position of the fixing plate 3, enabling the first pressure sensor 7 and the second pressure sensor 6 to detect the initial state pressure value of the slurry respectively, and enabling an alarm lamp and a buzzer alarm not to work;
s22, concrete is poured into the slurry, the concrete layer is located below the slurry layer due to the fact that the weight of the concrete is larger than that of the slurry, the liquid level of the slurry rises along with the continuous rising of the liquid level of the poured concrete, the slurry continues to rise after passing through the slurry through hole formed in the movable plate 4 due to the fact that the weight of the movable plate 4 is larger than that of the slurry, the pressure value of the slurry detected by the first pressure sensor 7 and the second pressure sensor 6 displayed on the PC end is equal to the pressure value detected when the over-filling prevention control device is initially placed into the slurry, the pressure value does not reach the alarm preset value, the alarm lamp is not on, and the buzzer does not sound;
s23, along with the continuous pouring of concrete, the liquid level of the concrete rises to the position of the movable plate 4, because the diameter of the slurry through hole is smaller than the particle size of concrete particles, and the weight of the movable plate 4 is smaller than that of the concrete, the continuously poured concrete pushes the movable plate 4 to rise continuously along the upright stanchion 8, when the liquid level of the concrete reaches the position of the first pressure sensor 7, the pressure value detected by the first pressure sensor 7 is larger than the initial state pressure value, and the pressure value is larger than the alarm preset value, the alarm lamp is turned on, and the buzzer alarm does not sound;
s23, along with the continuous pouring of the concrete, the liquid level of the slurry continuously rises, the slurry continuously rises after passing through a slurry through hole formed in the fixing plate 3, when the liquid level of the concrete reaches the position of the second pressure sensor 6, the pressure value detected by the second pressure sensor 6 is larger than the initial state pressure value, and the pressure value is larger than the alarm preset value, the buzzer alarms, the liquid level of the concrete reaches the pile top elevation position, and the pile body grouting is completed;
s3, after the liquid level of the concrete reaches the elevation of the pile body, the concrete needs to be continuously poured to a certain height to ensure the strength of the pile body, the concrete is continuously poured into the pile body grouting hole, the concrete layer pushes the whole over-filling prevention control device to continuously rise along the pile body grouting hole, and when the red scale mark of the over-filling prevention scale 9 does not appear at the hole opening of the pile body grouting hole, the over-filling height does not reach 50cm, and the concrete needs to be continuously poured; when the red scale line of the uppermost anti-over-grouting scale 9 exceeds the hole of the pile body grouting hole, the over-grouting height reaches 50cm but not 80cm, the poured concrete meets the standard requirement, and the concrete pouring is stopped; if two red scale lines appear outside the hole of the pile body grouting hole, the over-grouting height reaches 80cm, but not 1m, and the grouting needs to be stopped immediately; if three red scale lines appear outside the hole of the pile body grouting hole, the pouring height is 1m higher than the standard requirement, and the pouring is stopped immediately.
The above description is only for the specific embodiments of the present invention, but the scope of the present invention is not limited thereto, and any changes or substitutions that can be easily conceived by those skilled in the art within the technical scope of the present invention are included in the scope of the present invention. Therefore, the protection scope of the present invention shall be subject to the protection scope of the appended claims.
Claims (6)
1. The utility model provides a prevent surpassing and irritate controlling means based on pressure sensor, it includes protects a section of thick bamboo (1), pole setting (8), sensor and pressure early warning system (11), its characterized in that:
the over-irrigation prevention control device is characterized in that the overall weight of the over-irrigation prevention control device is smaller than that of concrete, the protective cylinder (1) is arranged in the vertical direction, a cover plate (2) is arranged above the protective cylinder (1), the supporting rod (5) is arranged on the upper portion of the protective cylinder (1), the supporting rod (5) penetrates through the protective cylinder (1) in the diameter direction of the protective cylinder (1), the upper portion of the outer side wall of the protective cylinder (1) is provided with over-irrigation prevention scales (9), the zero scale lines of the over-irrigation prevention scales (9) are flush with the upper end face of the protective cylinder, and the positions of the 50cm, 80cm and 100cm scale lines of the over-irrigation prevention scales (9) are marked; the vertical rod (8) is vertically and downwards installed at the center of the lower surface of the cover plate (2), a limiting nut (10) is arranged at the lower end of the vertical rod (8), a fixed plate (3) is fixedly installed at the middle part of the vertical rod (8) close to the lower position, the distance between the lower end faces of the fixed plate (3) and the vertical rod (8) is 100-150 cm, a movable plate (4) is movably installed on the vertical rod (8) below the fixed plate (3), a plurality of slurry through holes are formed in the cover plate (2), the fixed plate (3) and the movable plate (4), the diameter of each slurry through hole is smaller than the particle size of concrete particles, the gravity of the movable plate (4) is larger than that of slurry and smaller than that of concrete, the movable plate (4) moves upwards along the vertical rod (8) under the action of the concrete in a working state, and a first pressure sensor (7) is arranged on the, a second pressure sensor (6) is arranged on the lower surface of the fixing plate (3);
the pressure early warning system (11) comprises a digital conversion module, an electronic development board, an alarm lamp, a buzzer alarm and a PC (personal computer) end, wherein the first pressure sensor (7) is electrically connected with a signal input end of the first digital conversion module through a signal wire, a signal output end of the first digital conversion module is electrically connected with a signal input end of the first electronic development board, and a signal output end of the first electronic development board is respectively electrically connected with a signal input end of the buzzer alarm and a signal input end of the PC end; the second pressure sensor (6) is electrically connected with a signal input end of a second digital conversion module through a signal line, a signal output end of the second digital conversion module is electrically connected with a signal input end of a second electronic development board, and a signal output end of the second electronic development board is electrically connected with a signal input end of an alarm lamp and a signal input end of a PC end respectively.
2. The pressure sensor-based anti-overfilling control device of claim 1, wherein: the pile protecting cylinders (1) are arranged in a splicing mode, and the pile protecting cylinders (1) are connected end to end in a linear direction according to the excavation depth and the length of a pile body; the pole setting (8) set up to the concatenation formula, and a plurality of pole settings (8) are according to the length of protecting a section of thick bamboo (1) along the linear direction end to end.
3. The pressure sensor-based anti-overfilling control device of claim 1 or 2, wherein: the diameter of the protective cylinder (1) is 10-20 cm.
4. The pressure sensor-based anti-overfilling control device of claim 1, wherein: the lower surface of the fixing plate (3) is flush with the elevation of the pile top.
5. The pressure sensor-based anti-overfilling control device of claim 1, wherein: the overall severe fruit and fruit cultivation method of the super irrigation prevention control device is 300N/m-400N/m in weight, and the severe fruit and fruit cultivation method of the movable plate (4) is 50N/m-100N/m in weight.
6. The use method of the pressure sensor-based anti-overfilling control device, as recited in claim 1, comprising the steps of:
s1, installing an over-irrigation prevention control device: firstly, a plurality of pile casings (1) are connected end to end along a straight line direction according to the excavation depth of a pile body grouting hole and the length of the pile body, and a plurality of upright rods (8) are connected end to end along the straight line direction according to the length of the pile casings (1); secondly, a limiting nut (10) is installed at the lower end of the upright rod (8), a fixed plate (3) is fixedly installed at the position, close to the lower position, of the middle of the upright rod (8), the distance between the fixed plate (3) and the lower end face of the upright rod (8) is 100-150 cm, a second pressure sensor (6) is installed on the lower surface of the fixed plate (3), and a movable plate (4) is movably installed on the upright rod (8) below the fixed plate (3); thirdly, the upper end of the upright rod (8) is fixedly arranged at the center of the lower surface of the cover plate (2), then the cover plate (2) is covered above the pile casing (1), a first pressure sensor (7) is arranged on the inner wall of the pile casing (1) close to the end of the lower stroke position of the movable plate (4), and the first pressure sensor (7), a second pressure sensor (6) and a pressure early warning system (11) are electrically connected; finally, the support rod (5) penetrates through the upper part of the protective cylinder (1) along the diameter direction of the protective cylinder (1) to complete the installation of the over-irrigation prevention control device;
s2, sequentially carrying out the following pile grouting process:
s21, inserting the over-filling prevention control device installed in the step S1 into slurry in a pile body grouting hole in a suspended mode, enabling the slurry to enter an inner cavity of the pile casing (1) from the bottom of the pile casing (1), enabling the liquid level of the slurry to be higher than the position of the fixing plate (3), enabling the first pressure sensor (7) and the second pressure sensor (6) to detect the initial state pressure value of the slurry respectively, and enabling the alarm lamp and the buzzer alarm not to work;
s22, concrete is poured into the slurry, the concrete layer is located below the slurry layer as the gravity of the concrete is greater than that of the slurry, the liquid level of the slurry rises along with the continuous rising of the liquid level of the poured concrete, the slurry continues rising after passing through the slurry through holes formed in the movable plate (4) as the gravity of the movable plate (4) is greater than that of the slurry, the pressure value of the slurry detected by the first pressure sensor (7) and the second pressure sensor (6) displayed on the PC end is equal to the pressure value detected when the over-filling prevention control device is initially placed into the slurry, the pressure value does not reach the alarm preset value, the alarm lamp is not on, and the buzzer does not sound;
s23, along with the continuous pouring of concrete, the liquid level of the concrete rises to the position of the movable plate (4), because the diameter of the slurry through hole is smaller than the particle size of concrete particles, and the weight of the movable plate (4) is smaller than that of the concrete, the continuously poured concrete pushes the movable plate (4) to rise continuously along the vertical rod (8), when the liquid level of the concrete reaches the position of the first pressure sensor (7), the pressure value detected by the first pressure sensor (7) is larger than the initial state pressure value, and the pressure value is larger than the alarm preset value, the alarm lamp is turned on, and the buzzer alarm does not sound;
s23, along with the continuous pouring of the concrete, the liquid level of the slurry continuously rises, the slurry continuously rises after passing through a slurry through hole formed in the fixing plate (3), when the liquid level of the concrete reaches the position of the second pressure sensor (6), the pressure value detected by the second pressure sensor (6) is larger than the initial state pressure value, and the pressure value is larger than the alarm preset value, the buzzer alarms, the liquid level of the concrete reaches the pile top elevation position, and the pile body grouting is completed;
s3, after the liquid level of the concrete reaches the elevation of the pile body, a certain height needs to be continuously poured to ensure the strength of the pile body, the concrete is continuously poured into the pile body grouting hole, the concrete layer pushes the whole over-filling prevention control device to continuously rise along the pile body grouting hole, and when the red scale mark of the over-filling prevention scale (9) does not appear at the hole opening of the pile body grouting hole, the over-filling height does not reach 50cm, and the concrete needs to be continuously poured; when the red scale line of the uppermost anti-over-grouting scale (9) exceeds the opening of the pile body grouting hole, the over-grouting height reaches 50cm but not 80cm, the poured concrete meets the standard requirement, and the concrete pouring is stopped; if two red scale lines appear outside the hole of the pile body grouting hole, the over-grouting height reaches 80cm, but not 1m, and the grouting needs to be stopped immediately; if three red scale lines appear outside the hole of the pile body grouting hole, the pouring height is 1m higher than the standard requirement, and the pouring is stopped immediately.
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| Application Number | Priority Date | Filing Date | Title |
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| CN202010287098.9A CN111395323A (en) | 2020-04-13 | 2020-04-13 | Pressure sensor-based super-irrigation prevention control device and application method thereof |
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| CN202010287098.9A CN111395323A (en) | 2020-04-13 | 2020-04-13 | Pressure sensor-based super-irrigation prevention control device and application method thereof |
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| CN111997058A (en) * | 2020-08-04 | 2020-11-27 | 中电建十一局工程有限公司 | Construction method for preventing pile top concrete from chiseling and over-grouting |
| CN112144586A (en) * | 2020-09-22 | 2020-12-29 | 中国地质大学（武汉） | Elevation detection device and cast-in-place pile concrete elevation detection equipment |
| CN113981977A (en) * | 2021-12-09 | 2022-01-28 | 中铁二十二局集团第四工程有限公司 | Pile top elevation control device for drilling and pouring pile foundation |
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Application publication date: 20200710 |