CN211773679U - Reliable underwater concrete bored concrete pile elevation control early warning device - Google Patents
Reliable underwater concrete bored concrete pile elevation control early warning device Download PDFInfo
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- CN211773679U CN211773679U CN202020218597.8U CN202020218597U CN211773679U CN 211773679 U CN211773679 U CN 211773679U CN 202020218597 U CN202020218597 U CN 202020218597U CN 211773679 U CN211773679 U CN 211773679U
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Abstract
The utility model discloses a reliable underwater concrete bored concrete pile elevation control early warning device, set up gravity slider and hall magnetic switch that proportion is far greater than mud including the conduction pole, receive feed cylinder, audible-visual annunciator, receive the feed cylinder. The conduction pole is cavity form, upper end installation audible-visual annunciator, the beneficial results of the utility model: (1) the device can be optionally additionally connected with the conducting rod according to actual conditions, is convenient to assemble and disassemble, convenient and fast to operate, high in recycling efficiency, firm and durable; (2) the method can quickly and accurately control the pouring elevation of the concrete in the underwater concrete pouring process. (3) The device can carry out real-time measurement in the whole process of concrete pouring, avoids measurement errors caused by repeated plugging and unplugging of the device, and effectively solves the problems of over-pouring and under-pouring of the underwater concrete pouring pile.
Description
Technical Field
The utility model relates to a relevant technical field of building engineering equipment especially relates to a convenient reliable underwater concrete bored concrete pile elevation control early warning device and application method thereof.
Background
The bored pile foundation is a common foundation form in engineering construction, and is a pile formed by mechanically boring a pile hole in foundation soil on an engineering site, placing a reinforcement cage in the pile hole and pouring concrete. Due to the requirement of underground space development, the elevation of the pile top is often below the ground, in addition, the actual elevation of a concrete pouring surface is difficult to correctly position and control due to the existence of a slurry mixture in the concrete pouring process, the situation that the theoretically calculated elevation is not consistent with the actual elevation often occurs, the problem of poor engineering such as over-pouring or under-pouring of the pouring pile is formed, and the method is particularly obvious in the construction process of the bored pouring pile of the foundation of a high-rise building. The actual elevation is higher, so that concrete is over-irrigated, on one hand, concrete resources are seriously wasted, and meanwhile, the difficulty of foundation excavation is increased; the actual elevation is lower, so that the cast-in-place pile concrete can not be poured into the designed pile top elevation, and the design requirement can not be met.
The elevation positioning of the underwater concrete pouring of the pouring pile has important practical significance for avoiding concrete resource waste, saving construction cost, reducing foundation excavation difficulty, reducing environmental pollution, ensuring engineering quality and the like.
How to control the pile top elevation of the cast-in-place pile in underwater concrete pouring to meet the requirement of designed pouring elevation, and no better monitoring and controlling method exists at home until now. The measurement of the concrete surface is determined mainly by the experience of the constructor. The traditional measuring method for determining the pile top elevation of the concrete cast-in-place pile mainly comprises three methods:
1. the method for measuring the underwater concrete interface by adopting the measuring hammer and the measuring rope has the advantages that the operation equipment and the method are simple and easy to learn and are widely applied, but broken stones, scum and concrete are all non-uniform media, and the top elevation of the bored pile cannot be accurately positioned due to various limitations of field conditions.
2. The method is characterized in that a rod detection method is adopted for determination, namely, a long bamboo rod is stretched into slurry when the concrete is about to reach the pouring elevation, and the height of the coarse aggregate is determined by the experience of field workers. The method completely depends on the experience of constructors, and is very easy to cause serious over-irrigation phenomenon; and the detection work is required to be carried out at regular intervals, thereby greatly delaying the construction progress.
3. The resistivity method is adopted for testing, the method needs a whole set of devices for resistivity testing, and the resistivity change of concrete and slurry is greatly influenced by the construction environment, so that the method has high operation difficulty.
In the prior art, researches on a pile top elevation control device of a concrete cast-in-place pile have been developed, and the device is mainly divided into two types:
one type of device is based on the specific gravity difference between slurry and concrete, and achieves the purpose of controlling the concrete pouring height by converting a series of changes caused after the concrete is poured to the designed height into electric signals to be output;
the other type of device is that under the construction conditions of different mud densities and concrete densities, when concrete aggregate rises to a designed elevation, the motor resistance of the micromotor generates a surge current signal, so that an alarm signal is generated.
The parameters of the above two types of test devices need to be calibrated on site, so the reliability and accuracy of the device can be influenced by actual construction conditions.
How to design a light and handy nimble, use convenient device, can be fast at the concrete filling in-process under water, accurately control the elevation that fills of concrete, can carry out real-time measurement again filling the overall process, avoid causing measuring error, influence construction progress because of the repeated plug of device, be the problem that needs the solution at present urgently.
SUMMERY OF THE UTILITY MODEL
The utility model provides a convenient and reliable elevation control early warning device for an underwater concrete filling pile, which can quickly and accurately control the filling elevation of concrete in the underwater concrete filling process; and the real-time measurement can be carried out in the whole process of concrete pouring, so that the measurement error caused by repeated plugging and unplugging of the device is avoided, and the problems of over-pouring and under-pouring of the underwater concrete pouring pile are effectively solved.
This device can add according to actual conditions and connect the conduction pole wantonly, and loading and unloading are convenient, the simple operation, and reuse efficiency is high, and is durable.
In order to achieve the above purpose, the specific scheme of the utility model is as follows:
the utility model provides a reliable underwater concrete bored concrete pile elevation control early warning device, includes the conduction pole, receives feed cylinder, audible-visual annunciator, receives to set up gravity slider and hall magnetic switch that proportion is far greater than mud in the feed cylinder.
The transmission rod is hollow, the upper end of the transmission rod is provided with an audible and visual alarm, each section is 1.5m long, the outer surface of the transmission rod is provided with a scale layer, the sections are connected through screw threads and can be optionally additionally connected, and the lower end of the transmission rod is fixedly connected with the receiving cylinder; the receiving barrel is cylindrical, four limiting grooves are formed in the side wall of the receiving barrel and are used as slurry outlet grooves, the width of each groove is smaller than the particle size of the concrete coarse aggregate and larger than the particle size of slurry, and the slurry outlet is ensured to only allow the slurry to penetrate through but not the concrete coarse aggregate;
the gravity slider is arranged in the inner cavity of the material receiving cylinder and can freely move up and down, and the Hall magnetic switch is arranged at the upper end of the material receiving cylinder; during the use, will receive the feed cylinder to transfer design elevation place in advance, pour highly surpass design elevation take the altitude after when the concrete, the concrete is pressed and is promoted the gravity slider removal in receiving the feed cylinder, mud is discharged from the spacing groove that receives the feed cylinder lateral wall, and the concrete coarse aggregate continues to rise under the pressure effect, and then promotes the upward movement of gravity slider, and the permanent magnet that sets up on the gravity slider acts on and fixes the hall magnetic switch-on receiving feed cylinder upper portion and form closed loop, finally arouses audible-visual annunciator and sends out the police dispatch newspaper.
The utility model discloses a beneficial achievement:
(1) the device can be optionally additionally connected with the conducting rod according to actual conditions, is convenient to assemble and disassemble, convenient and fast to operate, high in recycling efficiency, firm and durable;
(2) the method can quickly and accurately control the pouring elevation of the concrete in the underwater concrete pouring process.
(3) The device can carry out real-time measurement in the whole process of concrete pouring, avoids measurement errors caused by repeated plugging and unplugging of the device, and effectively solves the problems of over-pouring and under-pouring of the underwater concrete pouring pile.
(4) Be applied to the monitoring control that the concrete pours the elevation under water with this device, can save construction cost, reduce the basis excavation degree of difficulty to very big degree, have important realistic meaning to reducing environmental pollution, ensuring engineering quality etc..
Drawings
FIG. 1 is a schematic structural view of the present invention;
FIG. 2 is a view showing the structure from the direction a-a in FIG. 1
In the figure: 1. an audible and visual alarm; 2. a conductive rod; 3. a wireless signal transmitter; 4. a Hall magnetic switch; 5. a permanent magnet; 6. a limiting groove; 7. a gravity slider; 8. a spacing pin; 9. to receive the barrel.
Detailed Description
The technical solution is described in detail below with reference to the accompanying drawings and the detailed description
As shown in the figure, the reliable underwater concrete cast-in-place pile elevation control early warning device comprises a conducting rod 2, a material receiving cylinder 9, an audible and visual alarm 1 and a gravity slider 7 and a Hall magnetic switch 4, wherein the gravity slider 7 and the Hall magnetic switch are arranged in the material receiving cylinder 9, and the specific gravity of the gravity slider is far greater than that of slurry.
The conducting rod 2 is hollow, the audible and visual alarm 1 is mounted at the upper end of the conducting rod, each section is 1.5m long, a scale layer is arranged on the outer surface of the conducting rod 2, the sections are connected through screw threads and can be optionally additionally connected, and the lower end of the conducting rod 2 is fixedly connected with the receiving cylinder 9; the receiving barrel 9 is cylindrical, four limiting grooves 6 are formed in the side wall of the receiving barrel and are used as slurry outlet grooves, the width of each groove is smaller than the particle size of the concrete coarse aggregate and larger than the particle size of slurry, and the slurry outlet is ensured to only allow the slurry to penetrate through but not the concrete coarse aggregate;
the gravity slider 7 is arranged in the inner cavity of the material receiving barrel 9 and can freely move up and down, and the Hall magnetic switch 4 is arranged at the upper end of the material receiving barrel 9; during the use, will receive feed cylinder 9 to transfer design elevation place in advance, after the concrete pouring height surpassed design elevation take the altitude, the concrete is pressed and is promoted the gravity slider removal in receiving the feed cylinder, and mud is discharged from the spacing groove 6 that receives the feed cylinder lateral wall, and the concrete coarse aggregate continues to rise under the pressure effect, and then promotes the upward movement of gravity slider, and the permanent magnet 5 that sets up on the gravity slider acts on and fixes and receive hall magnetic switch 4 switch-on the feed cylinder upper portion and form closed loop, finally arouses audible-visual annunciator 1 and send out the police dispatch newspaper.
The Hall magnetic switch 4 can also be connected with the wireless signal emitter 3, when the permanent magnet enables the Hall magnetic switch to be switched on to form a closed loop, the wireless signal emitter sends out signals to the audible and visual alarm, and finally the audible and visual alarm is caused to give out an alarm.
Furthermore, the axis direction of the gravity slide block is 180 degrees and is provided with two limit pins 8, the diameter of each limit pin is 4mm, and the length of each limit pin is 5 mm.
Furthermore, the limit pin 8 moves in the slurry discharge groove which is simultaneously used as the limit groove 6 and can freely slide up and down on the inner wall of the material receiving cylinder 9.
The working method of the early warning device comprises the following steps:
(1) lowering the device to the elevation of the designed pile top according to the reading of the conducting rod;
(2) when the concrete pouring amount exceeds the designed pile top elevation by a certain height, under the action of pressure difference, the concrete pushes the gravity slide block to move, mud is discharged from a mud groove in the side wall of the receiving cylinder, the concrete coarse aggregate continues to rise under the action of pressure, the gravity slide block is further pushed to move upwards, and when the permanent magnet is communicated with a Hall magnetic switch fixed on the upper portion of the receiving cylinder to form a closed loop, the audible and visual alarm is finally caused to give an alarm. The field repeated tests prove that the method can accurately judge the interface between the slurry and the concrete and effectively reduce the concrete over-irrigation amount.
(3) When the detection rod is pulled out, once the detection rod leaves the concrete and enters the slurry again, the gravity slide block falls down, the Hall magnetic switch is switched off, and the audible and visual alarm stops giving an alarm, so that the device can repeatedly monitor the attention height of the concrete.
The audible and visual alarm 1 adopts a common portable miniature audible and visual alarm;
although the present invention has been described with reference to the accompanying drawings, it is not intended to limit the scope of the present invention, and those skilled in the art should understand that various modifications or variations that can be made by those skilled in the art without inventive work are still within the scope of the present invention.
Claims (3)
1. A reliable height marking control early warning device for an underwater concrete cast-in-place pile is characterized by comprising a conducting rod, a material receiving barrel, an audible and visual alarm, wherein a gravity slider and a Hall magnetic switch, the specific gravity of which is far greater than that of slurry, are arranged in the material receiving barrel;
the transmission rod is hollow, the upper end of the transmission rod is provided with an audible and visual alarm, and the lower end of the transmission rod is fixedly connected with the receiving cylinder; the receiving cylinder is cylindrical, four limiting grooves are formed in the side wall of the receiving cylinder and are used as slurry outlet grooves, the width of each groove is smaller than the particle size of the concrete coarse aggregate and larger than the particle size of the slurry, and the slurry outlet is guaranteed to only allow the slurry to penetrate through but not the concrete coarse aggregate.
2. The underwater concrete cast-in-place pile elevation control early warning device as claimed in claim 1, wherein the length of each section of the conducting rod is 1.5m, a scale layer is arranged on the outer surface of the conducting rod, and the sections are connected through screw threads and can be connected in an optional mode.
3. The underwater concrete cast-in-place pile elevation control early warning device as claimed in claim 1, wherein the gravity slider is arranged in the inner cavity of the receiving cylinder and can freely move up and down, and the hall magnetic switch is arranged at the upper end of the receiving cylinder.
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| Application Number | Priority Date | Filing Date | Title |
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| CN202020218597.8U CN211773679U (en) | 2020-02-27 | 2020-02-27 | Reliable underwater concrete bored concrete pile elevation control early warning device |
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| CN202020218597.8U CN211773679U (en) | 2020-02-27 | 2020-02-27 | Reliable underwater concrete bored concrete pile elevation control early warning device |
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Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112255314A (en) * | 2020-11-02 | 2021-01-22 | 西南交通大学 | Concrete conveying guide pipe position measuring device |
| CN113186929A (en) * | 2021-04-15 | 2021-07-30 | 山东大学 | Cast-in-place pile concrete top surface elevation control device and method |
| CN113818442A (en) * | 2021-08-17 | 2021-12-21 | 山东大学 | Sliding triggering type bored pile concrete pouring height control device and method |
| CN113882383A (en) * | 2021-08-17 | 2022-01-04 | 山东大学 | Device and method for controlling concrete pouring height of filtering and vibrating type bored pile |
-
2020
- 2020-02-27 CN CN202020218597.8U patent/CN211773679U/en active Active
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112255314A (en) * | 2020-11-02 | 2021-01-22 | 西南交通大学 | Concrete conveying guide pipe position measuring device |
| CN112255314B (en) * | 2020-11-02 | 2022-02-22 | 西南交通大学 | Concrete conveying guide pipe position measuring device |
| CN113186929A (en) * | 2021-04-15 | 2021-07-30 | 山东大学 | Cast-in-place pile concrete top surface elevation control device and method |
| CN113818442A (en) * | 2021-08-17 | 2021-12-21 | 山东大学 | Sliding triggering type bored pile concrete pouring height control device and method |
| CN113882383A (en) * | 2021-08-17 | 2022-01-04 | 山东大学 | Device and method for controlling concrete pouring height of filtering and vibrating type bored pile |
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