CN110219325B - A pile foundation sediment thickness detection tool - Google Patents
A pile foundation sediment thickness detection tool Download PDFInfo
- Publication number
- CN110219325B CN110219325B CN201910381066.2A CN201910381066A CN110219325B CN 110219325 B CN110219325 B CN 110219325B CN 201910381066 A CN201910381066 A CN 201910381066A CN 110219325 B CN110219325 B CN 110219325B
- Authority
- CN
- China
- Prior art keywords
- pile foundation
- rope
- reel
- connecting rod
- measuring rope
- 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.)
- Active
Links
- 239000013049 sediment Substances 0.000 title claims abstract description 41
- 238000001514 detection method Methods 0.000 title claims abstract description 27
- 238000003825 pressing Methods 0.000 claims abstract description 24
- 238000003466 welding Methods 0.000 claims description 7
- 229910000831 Steel Inorganic materials 0.000 claims description 6
- 239000010802 sludge Substances 0.000 claims description 6
- 239000010959 steel Substances 0.000 claims description 6
- 238000004804 winding Methods 0.000 abstract description 16
- 238000013461 design Methods 0.000 abstract description 5
- 238000004519 manufacturing process Methods 0.000 abstract description 3
- 238000000034 method Methods 0.000 abstract description 3
- 239000002002 slurry Substances 0.000 abstract description 2
- 238000005259 measurement Methods 0.000 description 9
- 238000010276 construction Methods 0.000 description 4
- 238000005457 optimization Methods 0.000 description 4
- 238000005516 engineering process Methods 0.000 description 3
- 239000000463 material Substances 0.000 description 3
- 229910001294 Reinforcing steel Inorganic materials 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 238000004140 cleaning Methods 0.000 description 1
- 238000011161 development Methods 0.000 description 1
- 238000007599 discharging Methods 0.000 description 1
- 238000005553 drilling Methods 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
Classifications
-
- E—FIXED CONSTRUCTIONS
- E02—HYDRAULIC ENGINEERING; FOUNDATIONS; SOIL SHIFTING
- E02D—FOUNDATIONS; EXCAVATIONS; EMBANKMENTS; UNDERGROUND OR UNDERWATER STRUCTURES
- E02D33/00—Testing foundations or foundation structures
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02A—TECHNOLOGIES FOR ADAPTATION TO CLIMATE CHANGE
- Y02A90/00—Technologies having an indirect contribution to adaptation to climate change
- Y02A90/30—Assessment of water resources
Landscapes
- Engineering & Computer Science (AREA)
- Life Sciences & Earth Sciences (AREA)
- General Life Sciences & Earth Sciences (AREA)
- Mining & Mineral Resources (AREA)
- Paleontology (AREA)
- Civil Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Structural Engineering (AREA)
- Investigation Of Foundation Soil And Reinforcement Of Foundation Soil By Compacting Or Drainage (AREA)
- A Measuring Device Byusing Mechanical Method (AREA)
Abstract
The invention relates to a depth detection device, in particular to a pile foundation sediment thickness detection tool, which comprises a first component and a second component, wherein the first component comprises a pressing plate, a connecting rod, a first hoisting part, a first measuring rope and a first rope winding part, the connecting rod is vertically arranged on the upper part of the pressing plate and fixedly connected with the pressing plate, the upper end of the connecting rod is fixedly connected with the hoisting part, the two ends of the first measuring rope are respectively connected with the first hoisting part and the first rope winding part, the second component comprises an inserting rod, a second hoisting part, a second measuring rope and the second rope winding part, and scales are engraved on the first measuring rope and the second measuring rope. The tool for detecting the thickness of the pile foundation sediment is simple to manufacture, convenient to measure and accurate in measured data, and can ensure that the thickness of the pile foundation sediment meets the design and specification requirements. The method is suitable for detecting the sediment thickness of all underwater rotary digging piles, slurry retaining wall pore-forming piles and impact piles.
Description
Technical Field
The invention relates to a depth detection device, in particular to a pile foundation sediment thickness detection tool.
Background
Piling technology has undergone a course of development of thousands of years. The pile foundation materials and the pile types, or the pile construction machinery and the construction method have greatly developed, and a modern foundation engineering system is formed. Under certain conditions, the pile foundation can greatly reduce the workload of a construction site and the consumption of materials, so as to reduce the deviation between the actual pile depth and the designed pile depth, and ensure that the pile bottom sediment thickness of the mechanical rotary digging pile meets the standard requirement. Because the mechanical rotary digging pile belongs to underground hidden engineering, the wall protection pile forming technology is not adopted under most conditions, so that after the mechanical rotary digging pile is formed, the pile depth and the pile bottom sediment thickness can not be detected by manually discharging the hole. As an important component for pile foundation pore-forming quality detection, whether the depth of a pore-forming pile meets design requirements and whether the thickness of pile bottom sediment meets standard requirements directly influence the mechanical property of a pile and the quality of a pile foundation after the subsequent pile foundation concrete pouring, so that the pile depth and pile bottom sediment detection after pile foundation pore-forming are particularly important for better controlling the thickness of pile bottom sediment.
At present, no special tool is used for detecting the thickness of the sediment of the pile foundation, the industry is used for judging the sediment quantity at the bottom of the pile according to the geological condition and the sediment content of a drilling machine during hole cleaning, no unified standard exists, the sediment thickness can not be ensured to meet the design and specification requirements, the sediment is flushed by adopting the initial concrete filling quantity during construction, and the risk is high.
Disclosure of Invention
The invention aims to provide a pile foundation sediment thickness detection tool to solve the problem of non-professional tool detection in the background technology, and in order to achieve the purpose, the invention provides the following scheme:
The utility model provides a pile foundation sediment thickness detection instrument, includes first and second of subassembly, first by supreme clamp plate, connecting rod, first hoist and mount portion, first measuring rope and the first reel portion of including in proper order down of subassembly, connecting rod perpendicular to clamp plate upper surface just is located clamp plate mass center, connecting rod lower extreme and clamp plate fixed connection, connecting rod upper end and hoist and mount portion fixed connection, first reel portion includes support, spool and handle, the support is lower extreme open-ended frame, the spool is located the frame, the both ends of spool pass respectively the both sides wall of frame and stretch out the frame body and rotate with the framework to be connected, the handle is located the frame outside, the handle is "Z" type, handle one end and spool coaxial setting and with spool fixed connection, the other end of handle is the free end, first measuring rope one end and first hoist and mount portion fixed connection, the first measuring rope other end winding is on the spool, the subassembly second is by supreme including inserted bar, second hoist and mount portion, second measuring rope and second reel portion, inserted bar vertical setting, second rope portion and first reel portion and second reel portion are located the same with first reel portion, the first reel portion is located the first reel portion, the measuring rope is measured rope and is connected with the first reel portion, the first reel portion is located the first reel portion and the first reel portion is connected with the first reel portion, the measurement rope is measured rope.
The basic scheme of the invention has the following principle and beneficial effects:
fixing a bracket of a first rope winding part, rotating a handle in a first component, driving a reel to rotate by the handle to release a first measuring rope wound on the reel, slowly lowering the middle part of a pile foundation of the first component until a pressing plate is stable and does not move downwards, recording a scale value of the first measuring rope at the level with the ground, taking an average value after multiple measurements to obtain a length L1, and reversely rotating the handle to wind and store the first measuring rope on the reel after the measurement of the first component is finished; fixing a bracket of a second rope winding part, rotating a handle in a second component, driving a reel to rotate by the handle to release a second measuring rope wound on the reel, slowly lowering the second component from the middle part of a pile foundation to the bottom of the pile foundation to be detected, recording a scale value of the second measuring rope at the level of the ground after a plug rod is inserted into sediment to be stable, taking the average value after multiple measurements to be L2, reversely rotating the handle of the second rope winding part after the second component is measured, and winding and accommodating the measuring rope I on the reel; the height from the connection part of the first measuring component and the first measuring rope to the bottom surface of the pressing plate is recorded as H1, the height from the connection part of the second measuring component and the second measuring rope to the bottom of the inserted link is recorded as H2, and the thickness of the sediment is (L2+H2) - (L1+H2), so that the sediment is repeatedly obtained until the thickness of the sediment meets the design and specification requirements.
The sediment thickness detection instrument simple manufacture of this scheme, it is convenient to measure, and the measuring rope accomodates conveniently, low in manufacturing cost, and measured data is accurate, can calculate pile foundation sediment thickness and whether satisfy design and normative requirement. The method is suitable for detecting the sediment thickness of all underwater rotary digging piles, slurry retaining wall pore-forming piles and impact piles.
Further, as optimization of the basic scheme, the inserted link is cylindrical, and the lower end of the inserted link is in a conical tip shape.
The lower extreme of cylinder inserted link sets up to the awl cusp form and can reduce the resistance that receives when the lower extreme of inserted link inserts the sediment, makes the inserted link can insert the pile foundation bottom easily, and then makes the measurement more true and accurate.
Further, the clamp plate is square clamp plate, the connecting rod sets up in square clamp plate's upper surface center and clamp plate fixed connection.
The pressing plate is square, so that the first component can be contacted with a sediment body in a wider range in the pile foundation in sediment thickness detection of the square pile foundation, and detection is closer to reality and more accurate.
Further, the pressing plate is a round pressing plate, and the connecting rod is arranged at the center of the upper surface of the round pressing plate and is fixedly connected with the pressing plate.
The clamp plate sets up to circularly, makes the subassembly one can contact the sediment body of wider scope in the pile foundation in the sediment thickness detection to circular pile foundation for it is more accurate to detect more to press close to reality.
Further, as the optimization of basic scheme, first hoist and mount portion contains and is annular first rings, and first rings are located the up end center of connecting rod, and first rings pass through welded mode and connecting rod fixed connection.
Further, as the optimization of basic scheme, second hoist and mount portion contains the second rings that are the ring shape, and second rings are located the up end center of inserted bar, and second rings pass through welded mode and inserted bar fixed connection.
Further, as the optimization of basic scheme, the connecting rod is fixedly connected with the pressing plate in a welding mode.
Further, the measuring rope is a flexible steel wire rope. The use of flexible steel cords increases the robustness of the measuring cord.
Drawings
FIG. 1 is a front view of a first component of a pile foundation sludge thickness detection tool of the present invention.
Fig. 2 is a front view of a second component of the pile foundation sediment thickness detection tool of the present invention.
FIG. 3 is a top view of a first assembly of a pile foundation sludge thickness detection tool according to an embodiment of the present invention.
Fig. 4 is a top view of a first assembly of a second embodiment of a pile foundation sludge thickness detection tool of the present invention.
Detailed Description
The following is a further detailed description of the embodiments:
Reference numerals in the drawings of the specification include: the clamp plate 11, connecting rod 12, first rings 13, first measuring rope 14, inserted bar 21, second rings 22, second measuring rope 23, support 151, spool 152, handle 153.
The invention provides a pile foundation sediment thickness detection tool, which comprises a first component and a second component, as shown in fig. 1, wherein the first component sequentially comprises a pressing plate 11, a connecting rod 12, a first hoisting part, a first measuring rope 14 and a first rope winding part from bottom to top, the pressing plate 11 is made of steel plates, the pressing plate 11 is circular, the diameter of the pressing plate 11 can be prepared according to the size of a circular pile foundation, the connecting rod 12 is made of circular reinforcing steel bars, the connecting rod 12 is arranged at the center of the upper surface of the pressing plate 11 and is vertical to the pressing plate, the lower end of the connecting rod 12 is fixedly connected with the pressing plate 11 in a welding manner, the first hoisting part comprises a first hoisting ring 13 made of steel materials, the first hoisting ring 13 is in a circular ring shape and is arranged at the center of the upper end surface of the connecting rod 12, the first hoisting ring 13 is fixedly connected with the connecting rod 12 in a welding manner, the first rope winding part comprises a bracket 151, a reel 152 and a handle 153, the reel 152 is in a frame with an opening at the lower end, the reel 152 is arranged in the bracket 151, two ends of the reel 152 respectively pass through two side walls of the bracket 151 and are rotationally connected with the bracket 151, the handle 153 is arranged outside the bracket 151, the handle 152 is in a Z-shaped, the handle is in a Z-shaped, the reel 152 is arranged at the Z-shaped, the end is arranged coaxially, and is coaxially connected with the reel 152 and is arranged at one end of the first end 14 and is fixedly connected with the first end 14, and is fixed with the end 14.
As shown in fig. 2, the second component sequentially comprises an inserted link 21, a second hoisting part, a second measuring rope 23 and a second rope winding part from bottom to top, the second rope winding part has the same structural specification as the first rope winding part, the inserted link 21 is vertically arranged, the inserted link 21 is cylindrical, the lower end of the inserted link 21 is in a conical tip shape, the resistance of the inserted link 21 to sediment is reduced, the inserted link 21 can be easily inserted into the bottom of a pile foundation to enable the measurement to be more real and accurate, the second hoisting part comprises a second lifting ring 22 in a circular ring shape, the second lifting ring 22 is fixedly connected with the upper end of the inserted link 21 in a welding mode, one end of the second measuring rope 23 is fixedly connected with the second lifting ring 22, and the other end of the second measuring rope 23 is wound on a reel on the second rope winding part.
In order to measure and read data conveniently, scales are engraved on the first measuring rope 14 and the second measuring rope 23, the numerical value of the connection position of the first hanging ring 13 and the first measuring rope 14 is the same as the numerical value of the connection position of the second hanging ring 22 and the second measuring rope 23, and in order to increase the firmness of the measuring ropes, the first measuring rope 14 and the second measuring rope 23 are made of flexible steel wire ropes.
Embodiment two:
One difference from the embodiment is that: as shown in fig. 4, the pressing plate 11 in the first component is square, and the pressing plate 11 can be prepared according to the size of the square pile foundation, so that the first component can contact with a wider range of sediment bodies in the pile foundation in sediment thickness detection of the square pile foundation, and the detection is closer to reality and more accurate.
The working process of the invention is as follows:
Fixing a bracket 151 of a first rope winding part, rotating a handle 153 in a first component, driving a reel 152 to rotate by the handle 153 to release a first measuring rope 14 wound on the reel 152, slowly lowering the first component from the center position of a pile foundation to a position where a pressing plate 11 is stable and does not move down, recording a scale value of the first measuring rope 14 at the level with the ground, taking an average value after multiple measurements, and reversely rotating the handle 153 to wind and store the first measuring rope 14 on the reel 152 after the measurement of the first component is finished; fixing a bracket of a second rope winding part, rotating a handle in a second component, driving a reel to rotate by the handle to release a second measuring rope 23 wound on the reel, slowly lowering the second component from the center position of a pile foundation to the bottom of the pile foundation to be detected, recording a scale value of the second measuring rope 23 at the level with the ground after the bottom of a rod 21 is inserted into sediment to be stable, and taking the average value after multiple measurements to be L2; the height from the connection part of the first measuring component and the first measuring rope 14 to the bottom surface of the pressing plate 11 is denoted as H1, the height from the connection part of the second measuring component and the second measuring rope 23 to the bottom of the inserted link 21 is denoted as H2, and the (L2+H2) - (L1+H2) is the sediment thickness.
The foregoing is merely exemplary of the present application, and specific structures and features that are well known in the art are not described in detail herein. It should be noted that modifications and improvements can be made by those skilled in the art without departing from the structure of the present application, and these should also be considered as the scope of the present application, which does not affect the effect of the implementation of the present application and the utility of the patent. The protection scope of the present application is subject to the content of the claims, and the description of the specific embodiments and the like in the specification can be used for explaining the content of the claims.
Claims (4)
1. The utility model provides a pile foundation sediment thickness detection instrument, including subassembly one and subassembly two, subassembly one is from supreme clamp plate, connecting rod, first hoist and mount portion, first measuring rope and first reel rope portion of including in proper order down, the connecting rod perpendicular to clamp plate upper surface and be located clamp plate center of mass, connecting rod lower extreme and clamp plate fixed connection, connecting rod upper end and first hoist and mount portion fixed connection, first reel rope portion includes support, spool and handle, the support is lower extreme open-ended frame, the spool is located the frame, the both ends of spool are passed respectively and are stretched out the frame body and rotate with the framework and be connected, the handle is located the frame outside, the handle is "Z" type, handle one end and spool coaxial setting and with spool fixed connection, the other end of handle is the free end, first measuring rope one end and first hoist and mount portion fixed connection, the first measuring rope other end is wound on the spool, the subassembly second is from lower supreme including inserted bar, second hoist and mount portion, second measuring rope and second reel rope portion fixed connection, second reel portion and first reel rope portion fixed connection, second reel portion and second reel portion fixed connection are located the same in the round shape of connecting plate, the upper end is located the second reel and the second reel portion, the measuring rope center is located the round of measuring rope portion, the diameter is fixed connection, the diameter of the pressing plate is prepared according to the size of the circular pile foundation; the first component can contact a sediment body in a wider range in the pile foundation in sediment thickness detection of the circular pile foundation, so that the detection is closer to reality and more accurate; the first hoisting part comprises a circular first hoisting ring, the first hoisting ring is positioned at the center of the upper end face of the connecting rod, and the first hoisting ring is fixedly connected with the connecting rod in a welding mode; the second hoisting part comprises a circular second hoisting ring, the second hoisting ring is positioned at the center of the upper end face of the inserted link, and the second hoisting ring is fixedly connected with the inserted link in a welding mode.
2. The pile foundation sludge thickness detection tool of claim 1, wherein: the inserted link is the cylinder, and the lower extreme of inserted link is established to awl point form.
3. The pile foundation sludge thickness detection tool of claim 1, wherein: the connecting rod is fixedly connected with the pressing plate in a welding mode.
4. The pile foundation sludge thickness detection tool of claim 1, wherein: the first measuring rope and the second measuring rope are flexible steel wire ropes.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910381066.2A CN110219325B (en) | 2019-05-08 | 2019-05-08 | A pile foundation sediment thickness detection tool |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910381066.2A CN110219325B (en) | 2019-05-08 | 2019-05-08 | A pile foundation sediment thickness detection tool |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN110219325A CN110219325A (en) | 2019-09-10 |
| CN110219325B true CN110219325B (en) | 2024-11-22 |
Family
ID=67820660
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201910381066.2A Active CN110219325B (en) | 2019-05-08 | 2019-05-08 | A pile foundation sediment thickness detection tool |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN110219325B (en) |
Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110714490A (en) * | 2019-11-07 | 2020-01-21 | 中冶京诚工程技术有限公司 | Device and method for detecting sediment at the bottom of bored cast-in-place piles |
Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN204238266U (en) * | 2014-10-24 | 2015-04-01 | 中建海峡建设发展有限公司 | For detecting the combination plummet of stake holes sediment thickness |
| CN209958412U (en) * | 2019-05-08 | 2020-01-17 | 中铁建工集团有限公司 | Pile foundation sediment thickness detection instrument |
Family Cites Families (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2002098572A (en) * | 2000-09-27 | 2002-04-05 | Nisshin Steel Co Ltd | Measuring device for amount of sludgy sediment in settling tank |
| KR101284054B1 (en) * | 2011-07-22 | 2013-07-10 | 한국지질자원연구원 | Mini Piezometer |
| CN202989927U (en) * | 2012-12-04 | 2013-06-12 | 中建三局建设工程股份有限公司 | Pore-forming bottom sediment detector for rotary drilling pile |
| KR101918348B1 (en) * | 2016-07-13 | 2018-11-13 | 고려대학교 산학협력단 | Device for measuring suspension in borehole stability fluids and a slime thickness at the bottom of a pile borehole |
| CN205879070U (en) * | 2016-08-05 | 2017-01-11 | 中建筑港集团有限公司 | Drilled pile sediment thickness measurement device |
| JP6812233B2 (en) * | 2016-12-21 | 2021-01-13 | 株式会社熊谷組 | Pile hole inspection method and pile hole inspection equipment |
| KR101808966B1 (en) * | 2016-12-22 | 2018-01-19 | 현대건설주식회사 | Measuring Apparatus for Slim Thickness With Slime Sampler Using Air Cylinder |
| CN206752536U (en) * | 2017-05-25 | 2017-12-15 | 中建八局第三建设有限公司 | A kind of cast-in-situ bored pile bottom hole sediment measurement apparatus |
| CN207095469U (en) * | 2017-08-30 | 2018-03-13 | 中建筑港集团有限公司 | A kind of device for measuring cast-in-situ bored pile sediment thickness |
-
2019
- 2019-05-08 CN CN201910381066.2A patent/CN110219325B/en active Active
Patent Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN204238266U (en) * | 2014-10-24 | 2015-04-01 | 中建海峡建设发展有限公司 | For detecting the combination plummet of stake holes sediment thickness |
| CN209958412U (en) * | 2019-05-08 | 2020-01-17 | 中铁建工集团有限公司 | Pile foundation sediment thickness detection instrument |
Also Published As
| Publication number | Publication date |
|---|---|
| CN110219325A (en) | 2019-09-10 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN107130651B (en) | The detection device and its detection method of anchor pole internal force exterior measuring | |
| CN204919631U (en) | Automatic monitoring underwater concrete fills device of elevation | |
| CN110219325B (en) | A pile foundation sediment thickness detection tool | |
| CN109989433A (en) | A kind of device and its detection method of the superfilled height of real-time detection cast-in-situ bored pile | |
| CN209958412U (en) | Pile foundation sediment thickness detection instrument | |
| CN210104747U (en) | Steel casing positioning device for pore-forming construction | |
| CN112284362A (en) | Measuring device and method for verticality of steel casing in deep water area | |
| CN111677022B (en) | Sediment thickness detection device before bored concrete pile formation | |
| CN106400857A (en) | Model device and method used for field measuring of blockage degree of opening pile interior soil plug | |
| CN218238977U (en) | Underwater concrete pouring depth measuring tool | |
| CN206989920U (en) | A kind of inside concrete fracture width measurement apparatus | |
| CN111005382A (en) | Device for controlling verticality of prestressed concrete pipe pile | |
| CN110397014A (en) | A multifunctional miniature static penetrating probe rod | |
| CN201358475Y (en) | Caisson pile concrete elevation detector | |
| CN115419042A (en) | Device and monitoring method capable of simultaneously monitoring pile tip soil pressure and displacement | |
| CN111663524B (en) | Cast-in-place pile casting elevation monitoring device and construction method thereof | |
| CN212358401U (en) | A device for detecting the thickness of sediment before the cast-in-place pile is formed into a pile | |
| CN109778922B (en) | Device and method for detecting thickness of pile hole sediment of cast-in-situ bored pile | |
| CN208588356U (en) | A kind of construction testing apparatus for verticality | |
| CN115977170A (en) | Pore-forming quality detection device and detection method for cast-in-situ bored pile | |
| CN211773960U (en) | Detection apparatus for stake hole sediment thickness | |
| CN219714240U (en) | Pile hole sediment thickness detection device for engineering supervision | |
| CN216081687U (en) | Drilling bored concrete pile concrete face elevation device | |
| CN110616749A (en) | Pile body defect detection method | |
| CN213143150U (en) | Visual depth sounding instrument is pour to pile foundation |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PB01 | Publication | ||
| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| CB03 | Change of inventor or designer information |
Inventor after: Ma Jianfeng Inventor after: Wang Zhiguo Inventor after: Jiang Deqian Inventor before: Ma Jianfeng Inventor before: Wang Zhiguo Inventor before: Jiang Deqian |
|
| CB03 | Change of inventor or designer information | ||
| GR01 | Patent grant | ||
| GR01 | Patent grant |