CN212866081U - Device for monitoring pile forming quality of cast-in-place pile at complex stratum - Google Patents
Device for monitoring pile forming quality of cast-in-place pile at complex stratum Download PDFInfo
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- CN212866081U CN212866081U CN202021494660.7U CN202021494660U CN212866081U CN 212866081 U CN212866081 U CN 212866081U CN 202021494660 U CN202021494660 U CN 202021494660U CN 212866081 U CN212866081 U CN 212866081U
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Abstract
The utility model discloses a device for monitoring complicated stratum department bored concrete pile becomes stake quality belongs to civil engineering monitoring and aassessment technical field, is applicable to long sleeve mud dado and digs the long-term monitoring of drilling bored concrete pile complicated stratum section stake quality soon. The monitoring device comprises a piezoelectric ceramic intelligent aggregate, a three-dimensional array formed by the piezoelectric ceramic intelligent aggregate, a signal transmitting and collecting system and a transmission cable. The three-dimensional array formed by the intelligent piezoelectric ceramic aggregates is formed by orderly arranging a plurality of intelligent piezoelectric ceramic aggregates in space, and the arrangement area of the three-dimensional array covers the cast-in-place pile part of a complex stratum. The horizontal measurement can be carried out between the piezoelectric ceramic intelligent aggregates of the same horizontal plane, the vertical measurement and the cross oblique measurement can be carried out between the piezoelectric ceramic intelligent aggregates of planes with different heights, and the rapid and accurate evaluation can be carried out on the main part of the pile foundation between two adjacent layers of piezoelectric ceramic intelligent aggregates in the two-dimensional array through the three monitoring modes. This novel long-term monitoring to bored concrete pile stake quality has been realized.
Description
Technical Field
The utility model belongs to the technical field of civil engineering monitoring and aassessment, specific theory is a device for $ monitoring complicated stratum department bored concrete pile becomes stake quality.
Background
In the construction process of the long-sleeve slurry retaining wall rotary drilling bored pile, if complex geological conditions exist below the sleeve, the conditions that pile forming quality is affected by reaming, hole collapse and the like are likely to occur at the part. In fact, most construction processes of the cast-in-situ bored pile are carried out underwater, the construction processes cannot be observed, and excavation and acceptance inspection cannot be carried out after the pile is formed. In particular, in complex strata such as a sand flow layer, a gravel layer, a mud layer with easy hole collapse and shrinkage and the like below the underground water level, various problems in construction can cause great influence on the quality of the pile, and huge potential safety hazards are formed.
The technology commonly used for monitoring the quality of the cast-in-situ bored pile at present is an ultrasonic method. The technology is characterized in that a plurality of sounding pipes are embedded in advance, a probe is placed in the sounding pipes by taking the planes of the sounding pipes as the reference, the probe can transmit ultrasonic pulses, the ultrasonic pulses penetrate through a tested pile body and are received by another probe, an instrument displays various physical quantities when the ultrasonic pulses penetrate through a tested medium, and the quality of a pile is judged through the change of the physical quantities. The specification stipulates that the distance of each probe descending in the rough measurement of the ultrasonic method is 50cm or 40cm, the probe descending must be slow, and an inspector should pay attention to the change of the waveform, and the probe is recorded in case of abnormality so as to be used for the subsequent fine measurement. The detailed measurement is to perform encryption flat measurement, cross oblique measurement and cross control measurement on abnormal parts. Therefore, the method has the following limitations: for a cast-in-place pile with larger length, the pile bottom needs to be measured from the pile top, and the testing procedure is complicated, time-consuming and labor-consuming; the length of the ultrasonic probe is limited, the sound field which can be reached by sound waves is limited, and a missed measurement part is likely to occur; when oblique measurement is carried out, the two probes need to be controlled to be at different heights, and the height difference is controlled by controlling the downward distance of the two probes, so that errors are likely to exist.
For monitoring the quality of a pile, the intelligent piezoelectric ceramic aggregate can be used as a driver and a sensor, and the damage position and the damage degree can be more accurately judged by the current piezoelectric ceramic intelligent aggregate array fluctuation analysis technology. Therefore, the piezoelectric ceramic intelligent aggregate three-dimensional array can be pre-embedded in the pile foundation part of the complex stratum, and the device capable of quickly and accurately performing horizontal measurement, vertical measurement and cross oblique measurement on the quality of the pile foundation part in the complex stratum is invented.
SUMMERY OF THE UTILITY MODEL
The utility model discloses to the not enough of prior art existence, provide one kind can carry out quick and accurate flat survey, perpendicular survey and alternately survey the device to one side to the pile foundation position in the complicated stratum.
The technical scheme of the utility model is that: the utility model provides a device for monitoring complicated stratum department bored concrete pile becomes stake quality, including piezoceramics intelligence aggregate, the three-dimensional array that piezoceramics intelligence aggregate formed, signal transmission and collection system, transmission cable, the three-dimensional array that piezoceramics intelligence aggregate formed is formed by the orderly arrangement in space of a plurality of piezoceramics intelligence aggregate, piezoceramics intelligence aggregate is connected to signal transmission and collection system through transmission cable, signal transmission and collection system pass through transmission cable drive piezoceramics intelligence aggregate transmission stress wave, stress wave passes by the pile foundation under test and is received by the piezoceramics intelligence aggregate that is located same horizontal plane and adjacent horizontal plane and transmits the signal to signal transmission and collection system through transmission cable.
The cast-in-place pile is a long sleeve mud retaining wall rotary drilling cast-in-place pile.
The three-dimensional array formed by the intelligent piezoelectric ceramic aggregates is composed of two-dimensional arrays of the intelligent piezoelectric ceramic aggregates on horizontal planes with different heights, and the vertical distance between the two-dimensional arrays of the intelligent piezoelectric ceramic aggregates is 1-10 meters.
The piezoelectric ceramic intelligent aggregate two-dimensional array is a regular polygon, and one layer of piezoelectric ceramic intelligent aggregate two-dimensional array is arranged at the lower edge of the long sleeve.
The three-dimensional array formed by the intelligent piezoelectric ceramic aggregate covers the cast-in-place pile part of the complex stratum, and the intelligent piezoelectric ceramic aggregate is bound on the reinforcement cage at the corresponding position.
The intelligent aggregates of the piezoelectric ceramics can be subjected to horizontal measurement, vertical measurement and cross oblique measurement, the intelligent aggregates of the piezoelectric ceramics on the same horizontal plane can be subjected to horizontal measurement, the intelligent aggregates of the piezoelectric ceramics on planes with different heights can be subjected to vertical measurement and oblique measurement, and the main part of a pile foundation between two adjacent layers of intelligent aggregates of the piezoelectric ceramics can be quickly and accurately evaluated through the three monitoring modes. The monitoring device is a device capable of quickly and accurately measuring the pile foundation part in a complex stratum in a horizontal, vertical and cross-oblique manner.
Compared with the prior art, the beneficial effects of the utility model reside in that:
(1) the piezoelectric ceramic intelligent aggregate array of the monitoring device is a three-dimensional array, and the monitoring device can carry out nearly covering monitoring on the pile foundation part of a complex stratum section by three monitoring modes of horizontal measurement, vertical measurement and cross oblique measurement and is more accurate.
(2) The vertical spacing between the piezoelectric ceramic intelligent aggregate two-dimensional arrays of different elevations in the monitoring device can be adjusted correspondingly according to the thickness of a complex stratum, so that the spacing is in a reasonable range, and the purposes of economy and practicability are achieved.
(3) This monitoring devices has avoided the artifical loaded down with trivial details process of transferring the probe in later stage through the mode of pre-buried piezoceramics intelligence aggregate, compares in the ultrasonic wave method commonly used more quick accuracy.
(4) The monitoring device can accurately judge and evaluate the quality of the pile foundation concrete and the property, size and position of the internal defect, and can monitor for a long time.
Drawings
FIG. 1 is a schematic diagram of a piezoelectric ceramic intelligent aggregate structure.
Fig. 2 is the utility model discloses piezoelectric ceramic intelligence aggregate three-dimensional array structure chart.
Fig. 3 is the utility model discloses piezoelectric ceramic intelligence aggregate three-dimensional array's the regional sketch map that sets up.
Fig. 4 is a schematic diagram of a position of a complex stratum according to an embodiment of the present invention.
The reference numbers in the figures illustrate: 1-piezoelectric ceramic intelligent aggregate; 101-a piezoelectric ceramic sheet; 102-concrete cube; 2-piezoelectric ceramic intelligent aggregate three-dimensional array; 3-a signal transmitting and collecting system; 4-a transmission cable; 5-long sleeve; 6-filling piles; 7-complex formation; A-A' -complex formation upper boundary; B-B' -complex sub-stratigraphic interface;
Detailed Description
In order to make the technical solution, purpose and advantages of the present invention clearer, the following embodiments are combined with accompanying drawings to make further detailed description on the present invention, and the specific embodiments of the present invention are only used for explaining the present invention, and are not used as limitations to the present invention.
The utility model provides a device for monitoring complicated stratum department bored concrete pile becomes pile quality, the bored concrete pile of this embodiment is long sleeve mud dado and digs drilling bored concrete pile soon.
The device for monitoring the pile forming quality of the long sleeve mud retaining wall cast-in-situ bored pile in the complex stratum in the embodiment specifically comprises the following steps:
(1) the piezoelectric ceramic intelligent aggregate 1 is formed by pouring a piezoelectric ceramic piece 101 subjected to waterproof treatment, a concrete cube 102 and a transmission cable 4;
(2) before the pile foundation 6 is poured, binding a plurality of piezoelectric ceramic intelligent aggregates 1 required for monitoring on the corresponding reinforcement cage position at the lower edge of the sunk long sleeve 5 in advance to form a piezoelectric ceramic intelligent aggregate two-dimensional array on the same horizontal plane, wherein the piezoelectric ceramic intelligent aggregates 1 are connected to a signal transmitting and collecting system 3 through a transmission cable 4;
(3) taking the piezoelectric ceramic intelligent aggregate two-dimensional array at the lower edge of the long sleeve as a reference, and respectively arranging a plurality of piezoelectric ceramic intelligent aggregate two-dimensional arrays above and below the long sleeve at intervals of 5 meters until covering the area of the complex stratum 7, thereby forming a piezoelectric ceramic intelligent aggregate three-dimensional array required for monitoring;
(4) lowering a reinforcement cage and pouring concrete to form a pile foundation 6;
(5) carry out long-term real-time supervision to pile foundation 6, transmit a piezoceramics intelligence aggregate 1 as driver transmission stress wave in pile foundation 6, if other piezoceramics intelligence aggregate 1 of same horizontal plane are as the sensor, then can put down the survey to pile foundation 6, if other piezoceramics intelligence aggregate 1 of adjacent horizontal plane are as the sensor, then can carry out vertical survey and alternately survey to the pile foundation 6 to one side, through putting down the survey, three kinds of monitoring modes of vertical survey and alternately surveying to one side carry out comprehensive monitoring to complicated stratum 7 pile foundation positions.
The present invention is not limited to the above embodiment, and if various modifications or changes of the present invention do not depart from the spirit and scope of the present invention, if these modifications and changes belong to the claims and the equivalent technical scope of the present invention, then the present invention is also intended to include these modifications and changes, and the scope defined by the appended claims is to be regarded as the protection scope of the present invention.
Claims (6)
1. A device for monitoring pile forming quality of a cast-in-place pile at a complex stratum is characterized in that: including piezoceramics intelligence aggregate (1), three-dimensional array (2) that piezoceramics intelligence aggregate formed, signal transmission and collection system (3), transmission cable (4), three-dimensional array (2) that piezoceramics intelligence aggregate formed form at the orderly arrangement in space through a plurality of piezoceramics intelligence aggregate (1), piezoceramics intelligence aggregate (1) is connected to signal transmission and collection system (3) through transmission cable (4), signal transmission and collection system (3) are through transmission cable (4) drive piezoceramics intelligence aggregate (1) transmission stress wave, the stress wave passes and is surveyed the pile foundation and is received and transmit signal to signal transmission and collection system (3) through transmission cable (4) by piezoceramics intelligence aggregate (1) that are located same horizontal plane and adjacent horizontal plane.
2. The apparatus of claim 1, wherein the apparatus is configured to monitor pile quality of the cast-in-place pile at the complex formation, and wherein: the cast-in-place pile is a long sleeve mud retaining wall rotary drilling cast-in-place pile.
3. The apparatus of claim 1, wherein the apparatus is configured to monitor pile quality of the cast-in-place pile at the complex formation, and wherein: the three-dimensional array (2) formed by the intelligent piezoelectric ceramic aggregates is composed of two-dimensional arrays of the intelligent piezoelectric ceramic aggregates on different horizontal planes, and the vertical distance between the two-dimensional arrays of the intelligent piezoelectric ceramic aggregates is 1-10 meters.
4. The apparatus of claim 3, wherein the apparatus is configured to monitor pile quality of the cast-in-place pile at the complex formation, and further configured to: the piezoelectric ceramic intelligent aggregate two-dimensional array is a regular polygon, and one layer of piezoelectric ceramic intelligent aggregate two-dimensional array is arranged at the lower edge of the long sleeve.
5. The apparatus of claim 1, wherein the apparatus is configured to monitor pile quality of the cast-in-place pile at the complex formation, and wherein: the three-dimensional array (2) formed by the intelligent piezoelectric ceramic aggregate is arranged on a cast-in-place pile part with an area covering a complex stratum section.
6. The apparatus of claim 1, wherein the apparatus is configured to monitor pile quality of the cast-in-place pile at the complex formation, and wherein: the intelligent piezoelectric ceramic aggregate (1) can be subjected to horizontal measurement, vertical measurement and cross oblique measurement.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202021494660.7U CN212866081U (en) | 2020-07-16 | 2020-07-16 | Device for monitoring pile forming quality of cast-in-place pile at complex stratum |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202021494660.7U CN212866081U (en) | 2020-07-16 | 2020-07-16 | Device for monitoring pile forming quality of cast-in-place pile at complex stratum |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN212866081U true CN212866081U (en) | 2021-04-02 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202021494660.7U Expired - Fee Related CN212866081U (en) | 2020-07-16 | 2020-07-16 | Device for monitoring pile forming quality of cast-in-place pile at complex stratum |
Country Status (1)
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|---|---|
| CN (1) | CN212866081U (en) |
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2020
- 2020-07-16 CN CN202021494660.7U patent/CN212866081U/en not_active Expired - Fee Related
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| GR01 | Patent grant | ||
| DD01 | Delivery of document by public notice | ||
| DD01 | Delivery of document by public notice |
Addressee: Li Shangxiong Document name: payment instructions |
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| CF01 | Termination of patent right due to non-payment of annual fee | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20210402 |