US20150211353A1 - Digital Ding Inspection Device - Google Patents
Digital Ding Inspection Device Download PDFInfo
- Publication number
- US20150211353A1 US20150211353A1 US14/167,195 US201414167195A US2015211353A1 US 20150211353 A1 US20150211353 A1 US 20150211353A1 US 201414167195 A US201414167195 A US 201414167195A US 2015211353 A1 US2015211353 A1 US 2015211353A1
- Authority
- US
- United States
- Prior art keywords
- inspection device
- borehole
- readout unit
- improved inspection
- position sensor
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Abandoned
Links
- 238000007689 inspection Methods 0.000 title claims abstract description 20
- 239000013049 sediment Substances 0.000 claims abstract description 15
- 239000002184 metal Substances 0.000 claims description 7
- 238000000034 method Methods 0.000 claims description 3
- 239000007788 liquid Substances 0.000 claims description 2
- 238000006073 displacement reaction Methods 0.000 claims 2
- 238000003780 insertion Methods 0.000 claims 1
- 230000037431 insertion Effects 0.000 claims 1
- 238000005259 measurement Methods 0.000 abstract description 7
- 238000013461 design Methods 0.000 description 4
- 229910000831 Steel Inorganic materials 0.000 description 2
- 230000003749 cleanliness Effects 0.000 description 2
- 238000010276 construction Methods 0.000 description 2
- 239000010959 steel Substances 0.000 description 2
- 238000009412 basement excavation Methods 0.000 description 1
- 238000004140 cleaning Methods 0.000 description 1
- 230000007812 deficiency Effects 0.000 description 1
- 238000003908 quality control method Methods 0.000 description 1
- 238000011160 research Methods 0.000 description 1
- 238000012360 testing method Methods 0.000 description 1
- 238000012546 transfer Methods 0.000 description 1
- 238000011179 visual inspection Methods 0.000 description 1
Images
Classifications
-
- E—FIXED CONSTRUCTIONS
- E21—EARTH OR ROCK DRILLING; MINING
- E21B—EARTH OR ROCK DRILLING; OBTAINING OIL, GAS, WATER, SOLUBLE OR MELTABLE MATERIALS OR A SLURRY OF MINERALS FROM WELLS
- E21B47/00—Survey of boreholes or wells
-
- E—FIXED CONSTRUCTIONS
- E21—EARTH OR ROCK DRILLING; MINING
- E21B—EARTH OR ROCK DRILLING; OBTAINING OIL, GAS, WATER, SOLUBLE OR MELTABLE MATERIALS OR A SLURRY OF MINERALS FROM WELLS
- E21B47/00—Survey of boreholes or wells
- E21B47/04—Measuring depth or liquid level
-
- E—FIXED CONSTRUCTIONS
- E21—EARTH OR ROCK DRILLING; MINING
- E21B—EARTH OR ROCK DRILLING; OBTAINING OIL, GAS, WATER, SOLUBLE OR MELTABLE MATERIALS OR A SLURRY OF MINERALS FROM WELLS
- E21B47/00—Survey of boreholes or wells
- E21B47/09—Locating or determining the position of objects in boreholes or wells, e.g. the position of an extending arm; Identifying the free or blocked portions of pipes
Definitions
- the invention was not made under a government contract, or federal fund.
- SID Shaft Inspection Device
- Min-SID Miniature Shaft Inspection Device
- SID was developed in the early 1980s by Schmertmann and Crapps, Inc.
- the SID comprises a television camera sealed inside a water-tight jacket and is used for inspecting both dry and wet excavations.
- the concept of the SID was derived from an Australian drilled shaft inspection device originally developed by Dr. Jim Holden of the Country Roads Board. SID is a heavy (over 1000 lb) and large equipment. The operation is relatively expensive and time consuming
- Mini-SID was introduced around 1998 with much lighter weight and easier operation procedures. However, it is still very expansive and time consuming It also involved the operations of specifically trained personnel.
- DID Ding Inspection Device
- Embodiments of the invention overcome one or more deficiencies in the prior art by using digital position sensor instead of mechanical gauge.
- the entire measuring unit in the prior art including the steel piston and the sliding collar, is replaced with a position sensor, which provides continuous measurements and digital readings of the sediment thickness at the bottom of a borehole without the need of repeated retrieving of the measuring unit.
- the improved device provide following benefits for the drilled shaft inspection:
- FIG. 1 is the schematic sketch of the measuring unit.
- FIG. 2 is a picture overview of the measuring unit.
- FIG. 3 is a picture of the digital readout unit.
- FIG. 4 is the design details A.
- FIG. 5 is the design details B.
- FIG. 6 is the design details C.
- FIG. 1 illustrates the schematic sketch of the digital Ding Inspection Device (DID).
- the system comprises a metal upper plate, three metal legs attached to the upper plate, a position sensor attached to the upper plate, a metal bottom plate with holes, three metal eye bolt lifting rings attached to the upper plate, a digital readout unit, and a cable connecting the position sensor and the digital readout unit.
- the entire measuring unit is slowly lowered into a borehole. Once the unit reaches the bottom of a borehole, the bottom plate stays on top of the sediment and the three legs penetrate through the sediment and touch the harder surface. The relative movement between the bottom plate and the tip of the three legs is measured by the position sensor and displayed by the digital readout unit outside the borehole.
- FIG. 2 and FIG. 3 are the pictures of the measuring and the digital readout unit.
- FIG. 4 , FIG. 5 , and FIG. 6 are the design details of the measuring unit.
- the inspection procedure includes following essential steps:
Landscapes
- Physics & Mathematics (AREA)
- Life Sciences & Earth Sciences (AREA)
- Engineering & Computer Science (AREA)
- Geology (AREA)
- Mining & Mineral Resources (AREA)
- Geophysics (AREA)
- Environmental & Geological Engineering (AREA)
- Fluid Mechanics (AREA)
- General Life Sciences & Earth Sciences (AREA)
- Geochemistry & Mineralogy (AREA)
- A Measuring Device Byusing Mechanical Method (AREA)
- Investigation Of Foundation Soil And Reinforcement Of Foundation Soil By Compacting Or Drainage (AREA)
Abstract
Inspection of an interior bottom of a borehole by means of measuring the sediment thickness at the bottom. A digital inspection device to be lowered in the borehole supports an electrical transformer for the continuous measurement of the sediment thickness at the bottom of a borehole. A digital readout unit receives signals from the electrical transformer and displays the bottom sediment thickness.
Description
- This application is a continuation-in-part of application Ser. No. 12/888,500, filed Sep. 23, 2010, the entire disclosures of which are incorporated herein by reference.
- The invention was not made under a government contract, or federal fund.
- As a critical part of the drilled shaft quality control (FHWA, 1999), inspecting the bottom cleanliness of drilled shafts has always been challenging to contractors, engineers, and field inspectors, especially in the situation of the wet construction method, when direct visual inspections are impossible. Even with the dry construction method, inspectors have been reluctant to inspect the bottom visually due to safety concerns. On the other hand, most federal and local agencies, such as states' department of transportation and city building authorities specify that drilled shafts be inspected for bottom cleanliness prior to the placement of concrete. Typically, a minimum of 50 percent of the base of each shaft should have less than 0.5 inch of sediment at the time of concrete placement, and the maximum depth of sediment or any debris at any place on the base of the shaft is not allowed to exceed 1.5 inches. Conscientious cleaning of the bottom of drilled shafts has been proven by loads tests to be necessary for suitable load transfer in end bearing.
- Currently, the Shaft Inspection Device (SID) or Miniature Shaft Inspection Device (Min-SID) are the only devices recognized as being relatively accurate to measure the drilled shaft bottom sediment without an inspector's direct measurement in the hole.
- SID was developed in the early 1980s by Schmertmann and Crapps, Inc. The SID comprises a television camera sealed inside a water-tight jacket and is used for inspecting both dry and wet excavations. The concept of the SID was derived from an Australian drilled shaft inspection device originally developed by Dr. Jim Holden of the Country Roads Board. SID is a heavy (over 1000 lb) and large equipment. The operation is relatively expensive and time consuming
- Mini-SID was introduced around 1998 with much lighter weight and easier operation procedures. However, it is still very expansive and time consuming It also involved the operations of specifically trained personnel.
- Ding Inspection Device (DID) was developed around 2009 and was granted a U.S. Patent on Apr. 10, 2012. DID provides a simple, reliable, and effective way for the inspection of the borehole by means of measuring the sediment thickness at the bottom of a borehole. However, the measuring unit must be retrieved from the bottom of a borehole and a manual reading must be taken and recorded for each reading, which could be relatively labor intensive. In addition, the connection between the center steel piston and the sliding could be worn out quickly due to the repeated measurement, which could affect the accuracy of the measurement.
- For these reasons, a digital inspection device with improved efficiency and accuracy is desired.
- Embodiments of the invention overcome one or more deficiencies in the prior art by using digital position sensor instead of mechanical gauge. The entire measuring unit in the prior art, including the steel piston and the sliding collar, is replaced with a position sensor, which provides continuous measurements and digital readings of the sediment thickness at the bottom of a borehole without the need of repeated retrieving of the measuring unit.
- The improved device provide following benefits for the drilled shaft inspection:
- 1. No need of the human excess into the boring hole
- 2. Significantly improved efficiency of the inspection
- 3. Significantly improved accuracy of the measurement
- 4. Continuous measurement with a digital readout unit
- 5. Easy to operate
-
FIG. 1 is the schematic sketch of the measuring unit. -
FIG. 2 is a picture overview of the measuring unit. -
FIG. 3 is a picture of the digital readout unit. -
FIG. 4 is the design details A. -
FIG. 5 is the design details B. -
FIG. 6 is the design details C. - Referring to the drawings,
FIG. 1 illustrates the schematic sketch of the digital Ding Inspection Device (DID). As shown, the system comprises a metal upper plate, three metal legs attached to the upper plate, a position sensor attached to the upper plate, a metal bottom plate with holes, three metal eye bolt lifting rings attached to the upper plate, a digital readout unit, and a cable connecting the position sensor and the digital readout unit. - To perform the inspection, the entire measuring unit is slowly lowered into a borehole. Once the unit reaches the bottom of a borehole, the bottom plate stays on top of the sediment and the three legs penetrate through the sediment and touch the harder surface. The relative movement between the bottom plate and the tip of the three legs is measured by the position sensor and displayed by the digital readout unit outside the borehole.
-
FIG. 2 andFIG. 3 are the pictures of the measuring and the digital readout unit. -
FIG. 4 ,FIG. 5 , andFIG. 6 are the design details of the measuring unit. - The inspection procedure includes following essential steps:
- 1. Align the key with the keyway in the connector and measuring unit. Insert the connector and tighten the nut to secure the connection.
- 2. Connect the cable to the digital readout unit and tighten the nut.
- 3. Connect the power source (110V/220V) to the digital readout unit and turn the power on.
- 4. Slowly lower the measuring unit into a borehole. If there is liquid in the hole, make sure that the measuring device sinks into the bottom by its own weight.
- 5. Take reading that is displayed by the readout unit
- 6. Lift the measuring unit to make sure that the tips of the three legs are on out of the sediment.
- 7. Repeat steps 4 to 6 if additional readings are required.
Claims (7)
1. An improved inspection device comprising an upper metal plate, three legs attached to the upper plate, a position sensor attached to the upper plate, a digital readout unit, a cable connecting the position sensor by a waterproof connector and the digital readout unit, a bottom plate with holes, three lifting eye bolt rings attached to the upper plate for insertion into a borehole for measuring sediment thickness at the bottom of the hole.
2. A method of inspecting a borehole, either dry or into a liquid, by means of measuring the sediment thickness at the borehole bottom using said device of claim 1 .
3. The improved inspection device according to claim 1 wherein the upper plate comprises a round metal plate and three lifting eye bolt rings attached to the upper surface of the plate.
4. The improved inspection device according to claim 1 wherein the three legs comprises metal bars with sharpened tips.
5. The improved inspection device according to claim 1 wherein the position sensor comprises a device for measuring displacement, said displacement representing the sediment thickness at the bottom of a borehole.
6. The improved inspection device according to claim 1 wherein the digital readout unit comprises a computer having a display, responds to the signals from the electrical transformer for displaying the sediment thickness at the bottom of a borehole.
7. The improved inspection device according to claim 1 wherein the cable connects the digital readout unit and the position sensor with a waterproof connector.
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
US14/167,195 US20150211353A1 (en) | 2010-09-23 | 2014-01-29 | Digital Ding Inspection Device |
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
US12/888,500 US8151658B1 (en) | 2010-09-23 | 2010-09-23 | Ding inspection device |
US14/167,195 US20150211353A1 (en) | 2010-09-23 | 2014-01-29 | Digital Ding Inspection Device |
Publications (1)
Publication Number | Publication Date |
---|---|
US20150211353A1 true US20150211353A1 (en) | 2015-07-30 |
Family
ID=45869272
Family Applications (2)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
US12/888,500 Expired - Fee Related US8151658B1 (en) | 2010-09-23 | 2010-09-23 | Ding inspection device |
US14/167,195 Abandoned US20150211353A1 (en) | 2010-09-23 | 2014-01-29 | Digital Ding Inspection Device |
Family Applications Before (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
US12/888,500 Expired - Fee Related US8151658B1 (en) | 2010-09-23 | 2010-09-23 | Ding inspection device |
Country Status (1)
Country | Link |
---|---|
US (2) | US8151658B1 (en) |
Cited By (4)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US20160348500A1 (en) * | 2013-12-05 | 2016-12-01 | Pile Dynamics, Inc. | Borehole testing device |
US10408051B2 (en) * | 2016-07-13 | 2019-09-10 | Korea University Research And Business Foundation | Device for measuring suspension in drilling fluid and thickness of slime at the bottom of pile borehole |
US10690805B2 (en) * | 2013-12-05 | 2020-06-23 | Pile Dynamics, Inc. | Borehold testing device |
US12000975B2 (en) | 2022-04-21 | 2024-06-04 | Pile Dynamics, Inc. | Borehole inspecting and testing device and method of using the same |
Families Citing this family (13)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US8151658B1 (en) * | 2010-09-23 | 2012-04-10 | John Z. Ding | Ding inspection device |
CN102661143B (en) * | 2012-05-21 | 2014-08-27 | 武汉岩海工程技术有限公司 | Device and method for detecting thickness of sediments at bottom of drilling hole based on hardness difference sensing |
CN102748008B (en) * | 2012-07-18 | 2014-11-12 | 武汉岩海工程技术有限公司 | Detecting device capable of realizing drill hole three-dimensional imaging and method thereof |
CN102979111A (en) * | 2012-11-30 | 2013-03-20 | 中国十七冶集团有限公司 | Device for measuring sediment thickness of pile base of cast-in-situ bored pile |
WO2016178684A1 (en) * | 2015-05-07 | 2016-11-10 | Pile Dynamics, Inc. | Borehole inspecting and testing device and method of using the same |
CN107059954B (en) * | 2017-03-20 | 2018-07-20 | 广州珠江工程建设监理有限公司 | A kind of bored piles bottom sediment thickness detection device and method |
US10557340B2 (en) * | 2017-10-23 | 2020-02-11 | Aver Technologies, Inc. | Ultrasonic borescope for drilled shaft inspection |
CN109209238B (en) * | 2018-10-27 | 2020-11-03 | 江苏中煤地质工程研究院有限公司 | Portable in-situ shallow geothermal measurement drill bit |
CN109916354A (en) * | 2019-04-03 | 2019-06-21 | 广东中人岩土工程有限公司 | A kind of rotary digging stake sediment thickness detection device |
CN110528599B (en) * | 2019-07-23 | 2021-05-14 | 中建三局集团有限公司 | Building construction concrete filling pile sediment measuring device and using method thereof |
CN110905011A (en) * | 2019-11-28 | 2020-03-24 | 云南建研建设工程检测鉴定有限公司 | Method for detecting thickness of concrete pouring foundation pile bottom sediment |
US11136879B2 (en) | 2020-01-31 | 2021-10-05 | Aver Technologies, Inc. | Borescope for drilled shaft inspection |
US10677039B1 (en) | 2020-01-31 | 2020-06-09 | Aver Technologies, Inc. | Borescope for drilled shaft inspection |
Citations (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US20040160514A1 (en) * | 1998-09-30 | 2004-08-19 | Florida State University Research Foundation | Borescope for drilled shaft inspection |
US20120073363A1 (en) * | 2010-09-23 | 2012-03-29 | John Ding | Ding Inspection Device |
-
2010
- 2010-09-23 US US12/888,500 patent/US8151658B1/en not_active Expired - Fee Related
-
2014
- 2014-01-29 US US14/167,195 patent/US20150211353A1/en not_active Abandoned
Patent Citations (4)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US20040160514A1 (en) * | 1998-09-30 | 2004-08-19 | Florida State University Research Foundation | Borescope for drilled shaft inspection |
US20070127780A1 (en) * | 1998-09-30 | 2007-06-07 | Florida State University Research Foundation, Inc. | Digital video borescope for drilled shaft inspection |
US20120073363A1 (en) * | 2010-09-23 | 2012-03-29 | John Ding | Ding Inspection Device |
US8151658B1 (en) * | 2010-09-23 | 2012-04-10 | John Z. Ding | Ding inspection device |
Cited By (6)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US20160348500A1 (en) * | 2013-12-05 | 2016-12-01 | Pile Dynamics, Inc. | Borehole testing device |
US10330823B2 (en) * | 2013-12-05 | 2019-06-25 | Pile Dynamics, Inc. | Borehole testing device |
US10690805B2 (en) * | 2013-12-05 | 2020-06-23 | Pile Dynamics, Inc. | Borehold testing device |
US11340379B2 (en) | 2013-12-05 | 2022-05-24 | Pile Dynamics, Inc. | Borehole inspecting and testing device and method of using the same |
US10408051B2 (en) * | 2016-07-13 | 2019-09-10 | Korea University Research And Business Foundation | Device for measuring suspension in drilling fluid and thickness of slime at the bottom of pile borehole |
US12000975B2 (en) | 2022-04-21 | 2024-06-04 | Pile Dynamics, Inc. | Borehole inspecting and testing device and method of using the same |
Also Published As
Publication number | Publication date |
---|---|
US20120073363A1 (en) | 2012-03-29 |
US8151658B1 (en) | 2012-04-10 |
Similar Documents
Publication | Publication Date | Title |
---|---|---|
US20150211353A1 (en) | Digital Ding Inspection Device | |
US7187784B2 (en) | Borescope for drilled shaft inspection | |
Faella et al. | The Church of the Nativity in Bethlehem: Non-destructive tests for the structural knowledge | |
CN106018253B (en) | A kind of multi-functional underground concrete structure corrosion damage monitoring device | |
AU2012101235A4 (en) | Rapid load capacity test | |
CN106596287B (en) | The lateral loading device of tool-type masonry anti-reflecting bending strength test | |
WO2016178684A1 (en) | Borehole inspecting and testing device and method of using the same | |
Lunne et al. | Effect of cone penetrometer type on CPTU results at a soft clay test site in Norway | |
WO2019000906A1 (en) | Integrated monitoring system for wall rock stress field and fracture field and quantitative determination method | |
CN206646412U (en) | A kind of Bridge construction monitoring system | |
CN109854298B (en) | Method for determining time and range of secondary support of roadway | |
CN106092050B (en) | A kind of distribution type fiber-optic inclination measurement device and tilt measurement | |
Low et al. | Characterization of near seabed surface sediment | |
RU2460062C1 (en) | Method to determine corrosion condition of underground part of reinforced concrete supports of power transmission lines and contact system | |
CN205808892U (en) | A kind of multi-functional underground concrete structure corrosion damage monitoring device | |
Małkowski et al. | Automatic monitoring system designed for controlling the stability of underground excavation | |
Sánchez-Beitia | Stresses analysis at the Altes Museum of Berlin by means of the Hole-Drilling technique (Donostia Method) | |
CN201170728Y (en) | Antifreezing type multifunctional device for measuring water level and ice thickness | |
Piscsalko et al. | State of Practice and Advances in Quality Control Methods for Drilled Shafts | |
KR101756980B1 (en) | Direct shear testing apparatus for being capable of temperature measurement | |
Thiele et al. | Comparison of fatigue crack detection methods for high-cyclic loaded steel structures | |
Kalenjuk et al. | Automated surface documentation of large water dams using image and scan data of modern total stations | |
Halabe et al. | Condition Assessment of Reinforced Concrete and FRP Composite Structural Components using NDT Techniques | |
Roskoden | Processing advancements of free fall penetrometer data and their ground proving in regional studies in New Zealand | |
AU2013213724B2 (en) | Rapid load capacity test |
Legal Events
Date | Code | Title | Description |
---|---|---|---|
STCB | Information on status: application discontinuation |
Free format text: ABANDONED -- FAILURE TO RESPOND TO AN OFFICE ACTION |