CN207079640U - A kind of cast-in-place concrete pile pile bottom sediment thickness detection apparatus - Google Patents
A kind of cast-in-place concrete pile pile bottom sediment thickness detection apparatus Download PDFInfo
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- CN207079640U CN207079640U CN201720876774.XU CN201720876774U CN207079640U CN 207079640 U CN207079640 U CN 207079640U CN 201720876774 U CN201720876774 U CN 201720876774U CN 207079640 U CN207079640 U CN 207079640U
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Abstract
The utility model discloses a kind of cast-in-place concrete pile pile bottom sediment thickness detection apparatus, include core drilling machine and drilling rod, vibrating sensor and displacement transducer are provided with the drilling rod, also includes control circuit, the vibrating sensor and displacement transducer are connected to process circuit.The utility model device is received the data of the sensor by control circuit by setting vibrating sensor and displacement transducer in rig, and by handling sensor signal control circuit, pile bottom sediment thickness is detected so as to realize.The utility model can be widely applied to cast-in-place concrete pile drilling core checking field as a kind of cast-in-place concrete pile pile bottom sediment thickness detection apparatus.
Description
Technical field
Cast-in-place concrete pile drilling core checking field is the utility model is related to, especially a kind of cast-in-place concrete pile pile bottom sediment
Thickness detection apparatus.
Background technology
Foundation of concrete perfusion piles is widely used to city's political and ideological work as one of most important base form of engineering structure
The fields such as journey, building, traffic engineering.An important factor for pile bottom sediment thickness is pile quality, directly affects bearing capacity of pile foundation
Just.
The detection of pile bottom sediment thickness at present, mainly there are self-test and third party to detect two ways.Self-test can typically use
Two methods, carried out before pile：Before one kind is casting concrete, by pair of Construction Party, management side and construction party tissue
Hole quality is carried out an acceptance inspection, i.e., by pumping, after positive and negative circulation borehole cleaning, sediment thickness is measured using sash weight method, it is common practice that
Be bonded to the starting point of lining rope with one piece of weight and then slowly transfer, to bottom hole after slowly put with putting on hand, amplitude should not be big, then
Armrest sense obtains the substantially thickness of sediment, and this method precision is not high, estimates mainly by the experience of workmen；Another kind is logical
Cross equipment and measure pile penetration, so as to measure sediment thickness, but operate comparatively laborious, general seldom use.Third party detects sediment
Thickness, after concrete-pile pouring molding, unit is detected by third party sediment thickness is gone out by drill core test.
The underwater television occurred in recent years, sediment thickness problem can be checked as the supplementary means of drilling core checking.But water
Lower TV is limited by bottom hole water body visibility；In addition, checked using underwater television before sediment, it is necessary to use clear water hole flushing repeatedly, powder
It could be detected after dirt precipitation completely, whole process generally requires the two or three days, and equipment is heavy, in-convenience in use, if
Each hole checks that sediment thickness cost is high using underwater television.
Drill core test concrete-pile bottom sediment thickness mainly passes through drilling rod drilling depth length and core boring sampling length at present
Difference, with reference to drill bit when drilling through sediment penetration rate, whether there is situations such as brill synthesis determine, depend entirely on rig machine
Long experience and professional quality, it is always denouncing for drill core test that can not accurately determine sediment thickness.
Term is explained：
(1) pile foundation
Pile foundation refers to the basis or straight with stake by post that the cushion cap of stake and stake top connection by being arranged in ground collectively constitutes
The single-pile foundation connect in succession.
(2) reflection wave method
Reflection wave method includes detecting of bearing capacity of a pile and pile integrity detection.Wherein loading test is divided into single pile
Vertical compression bearing capacity examination, vertically pulling-resistant bearing capacity examination and horizontal bearing force inspecting.The expection of engineering pile is led to using function
Cross bearing capacity of single pile realization, be the defects of finding some influence bearing capacity of single piles the purpose of integrity detection, it is ensured that pile foundation it is durable
Property, be advantageous to reliably judge bearing capacity of pile foundation and reduce potential safety hazard.
(3) core drilling method
Core drilling method be applied to detection cast-in-place concrete pile stake is long, concrete strength of pile, pile defect and its position, stake
Bottom sediment thickness, judge or differentiate pile bottom force holding layer ground character, judge pile body integrity classification.Also it can detect diaphram wall
Wall depth, walls concrete intensity, wall body defect and its position, wall bottom sediment thickness, judge or differentiate wall bed rock soil nature shape.
(4) pile defect
Cause pile body breaking, crack, necking down, the folder mud of pile structural strength and durability reduction (miscellaneous to a certain extent
Thing), cavity, honeycomb, it is loose phenomena such as general designation.
(5) sediment thickness
Sediment refers to what drilling left with precipitation or collapse hole during borehole cleaning, the sediment do not taken away by circulating mud；Typically
It is compared with coarse granule, sediment thickness is the floor height of this layer of sediment.
Utility model content
In order to solve the above-mentioned technical problem, the purpose of this utility model is：A kind of cast-in-place concrete pile pile bottom sediment thickness
Detection means.
Drill bit of drilling machine is when by pile concrete and stake bed rock stone supporting course, because medium is different or medium has density
Change, vibration frequency and vibration amplitude are changed, and vibrating sensor and displacement transducer, prison are installed in traditional core drilling machine
These changes are surveyed, and the analysis of qualitative, quantitative is carried out by process circuit, to realize to concrete pile quality and stake bottom holding force
The detection and monitoring of layer, reduce the influence of artificial subjective factor, so as to Accurate Determining pile bottom sediment thickness.
Technical scheme is used by the utility model：A kind of cast-in-place concrete pile pile bottom sediment thickness detection apparatus, bag
Core drilling machine and drilling rod have been included, vibrating sensor and displacement transducer are provided with the drilling rod, has also included control circuit, it is described
Vibrating sensor and displacement transducer are connected to control circuit.
Further, the control circuit is also associated with wireless data transfer module.
Further, the control circuit is also associated with data memory module.
Further, the control circuit includes harmonic management module, acceleration processing module and abrupt climatic change module, institute
State vibrating sensor and abrupt climatic change module is connected to by harmonic management module, institute's displacement sensors handle mould by acceleration
Block is connected to abrupt climatic change module.
Further, the abrupt climatic change module is used to be filtered processing to the signal of harmonic management module.
Further, the harmonic management module is FFT calculator circuits.
The beneficial effects of the utility model are：The utility model device in rig by setting vibrating sensor and position respectively
Displacement sensor, and by control circuit receive the sensor data, by handling sensor signal control circuit,
Pile bottom sediment thickness is detected so as to realize.
Brief description of the drawings
Fig. 1 is the utility model drill bit structure schematic diagram；
Fig. 2 is the utility model device circuit structured flowchart；
Fig. 3 is the circuit structure block diagram of the utility model device further embodiment；
Fig. 4 is vibrating sensor output waveform figure in the utility model embodiment；
Fig. 5 is vibration frequency harmonic components figure under normal circumstances in the utility model embodiment；
Fig. 6 is vibration frequency harmonic components figure under a kind of abnormal conditions in the utility model embodiment；
Fig. 7 is vibration frequency harmonic components figure under another abnormal conditions in the utility model embodiment；
Fig. 8 is displacement acceleration figure under normal circumstances in the utility model embodiment.
Embodiment
Specific embodiment of the present utility model is described further below in conjunction with the accompanying drawings：
A kind of cast-in-place concrete pile pile bottom sediment thickness detection apparatus, reference picture 1, include core drilling machine and drilling rod 1, it is described
Vibrating sensor 3 and displacement transducer 2 are provided with drilling rod 1, reference picture 2, also includes control circuit, the vibrating sensor
Control circuit is connected to displacement transducer.
Reference picture 3, is further used as preferred embodiment, and the control circuit is also associated with wireless data transmission mould
Block.
By wireless data transfer module, data and/or analysis result that control circuit obtains can be transmitted to cloud service
The signal of control circuit can be analyzed data or directly obtained to device, cloud server, and user can directly pass through cloud service
Device accesses data, and data are analyzed accordingly, so as to obtain pile bottom sediment Thickness sensitivity analysis result.
Reference picture 3, preferred embodiment is further used as, the control circuit is also associated with data memory module, uses
, especially can be data cached when wireless data transmission has failure in the data of storage process circuit.
Reference picture 3, is further used as preferred embodiment, and the control circuit includes harmonic management module, accelerated
Degree processing module and abrupt climatic change module, the vibrating sensor are connected to abrupt climatic change module, institute by harmonic management module
Displacement sensors are connected to abrupt climatic change module by acceleration processing module.
Preferred embodiment is further used as, the abrupt climatic change module is used to carry out the signal of harmonic management module
Filtering process.
Preferred embodiment is further used as, the harmonic management module is FFT calculator circuits.
User can be judged accordingly according to the data for handling to obtain in control circuit, if drill vibration frequency is humorous
Low-frequency component mutation increases in wave component, then position density or the hardness increase of displacement are corresponded in the concrete of core drilling machine coring；
If the harmonic components high frequency components mutation of drill vibration frequency increases, the position of displacement is corresponded in the concrete of core drilling machine coring
Put density or hardness reduces.If forward mutation assay occurs in the acceleration of drill bit displacement, position is corresponded in the concrete of core drilling machine coring
The position density or hardness of shifting reduce；If negative sense mutation occurs in the acceleration of drill bit displacement, in the concrete of core drilling machine coring
The position density of corresponding displacement or hardness increase.
During core drilling machine samples, when the property for running into the concrete such as cavity, impurity, honeycomb, pile bottom sediment is sent out
During raw change, the load that corresponding drill bit is subject to can also produce bigger change, so as to produce ratio on vibrating sensor
More harmonic components, by the change of the composition and displacement transducer corresponding data of harmonic wave, user may determine that correspondingly
The defects of local and related performance.
Vibrating sensor output waveform by harmonic components analysis as shown in figure 4, understand to deposit in its frequency domain under normal circumstances
In a prominent crest, as shown in Figure 5.If the harmonic components low and medium frequency part increase of vibrating sensor, illustrates drill bit
Vibration frequency reduces, and the load increase of rig, illustrates that rig has got into harder part this moment.Such as Fig. 6 harmonic components figure
It is shown, relative to the waveform that a low frequency is superimposed on the basis of Fig. 5 fundamental waves, that is, there is low frequency mutation, can be with by observing waveform
Draw, drill vibration frequency reduces, and illustrates that rig gets into density or hardness and becomes big such as reinforcing bar, ratchel etc relatively this moment
Object, while occur high frequency higher hamonic wave on drill bit, while HFS becomes miscellaneous, the frequency values difference of the bossing of frequency
Corresponding rig has got into different compositions, can by abrupt climatic change module according to the frequency values of above-mentioned bossing to it is possible into
Analyzed.
If the harmonic components low and medium frequency part of vibrating sensor is reduced, illustrate the vibration frequency increase of drill bit, rig
Load is reduced, and relative to Fig. 5 fundamental wave, the protrusion peak frequencies of low frequency part move to right in Fig. 7 harmonic components, that is, high frequency occur
Mutation, can be drawn by observing waveform, the increase of drill vibration frequency, illustrate that rig gets into density this moment or hardness diminishes relatively
, there is high frequency higher hamonic wave and equally correspond to rig respectively having got into not in cavity, honeycomb, pile bottom sediment etc. on drill bit
Same composition, user can be analyzed possible composition by the frequency values of above-mentioned bossing.
Similarly, core drilling machine sampling during, fall off rate change keep within the specific limits, when run into cavity, honeycomb
Speed can increase when structure, pile bottom sediment, and when passing through defect completely, speed can fall after rise, and performance rate acceleration is scarce when running into
Speed has forward mutation assay when falling into, and when passing through defect completely, rate acceleration has negative sense mutation, as shown in figure 8, according to position
The accelerating curve that displacement sensor is calculated, abscissa are the moment, unit s, and ordinate is acceleration magnitude, unit m/
s2, can be drawn by observing waveform, a positive sudden change of acceleration occurs in time 561s or so, shows that bit speed increases
Add, illustrate that rig gets into cavity, honeycomb, pile bottom sediment etc. this moment, and there is the acceleration of a negative sense in time 876s or so
Degree mutation, show that bit speed reduces, illustrate that rig gets into the object of such as reinforcing bar, ratchel etc this moment.
With reference to above-mentioned vibration frequency and bit location, user can also be by that can realize to coagulation to concrete fitting data
The situation of the different defects of soil is made a concrete analysis of.
Above is preferably implement to be illustrated to of the present utility model, but the utility model is created and is not limited to institute
State embodiment, those skilled in the art can also make a variety of etc. on the premise of without prejudice to the utility model spirit
With conversion or replace, these equivalent deformations or replacement are all contained in the application claim limited range.
Claims (6)
- A kind of 1. cast-in-place concrete pile pile bottom sediment thickness detection apparatus, it is characterised in that：Include core drilling machine and drilling rod, it is described Vibrating sensor and displacement transducer are provided with drilling rod, also includes control circuit, the vibrating sensor and displacement sensing Device is connected to control circuit.
- A kind of 2. cast-in-place concrete pile pile bottom sediment thickness detection apparatus according to claim 1, it is characterised in that：It is described Control circuit is also associated with wireless data transfer module.
- A kind of 3. cast-in-place concrete pile pile bottom sediment thickness detection apparatus according to claim 1, it is characterised in that：It is described Control circuit is also associated with data memory module.
- A kind of 4. cast-in-place concrete pile pile bottom sediment thickness detection apparatus according to claim 1, it is characterised in that：It is described Control circuit includes harmonic management module, acceleration processing module and abrupt climatic change module, and the vibrating sensor passes through humorous Ripple processing module is connected to abrupt climatic change module, and institute's displacement sensors are connected to abrupt climatic change mould by acceleration processing module Block.
- A kind of 5. cast-in-place concrete pile pile bottom sediment thickness detection apparatus according to claim 4, it is characterised in that：It is described Abrupt climatic change module is used to be filtered processing to the signal of harmonic management module.
- A kind of 6. cast-in-place concrete pile pile bottom sediment thickness detection apparatus according to claim 4, it is characterised in that：It is described Harmonic management module is FFT calculator circuits.
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201720876774.XU CN207079640U (en) | 2017-07-18 | 2017-07-18 | A kind of cast-in-place concrete pile pile bottom sediment thickness detection apparatus |
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| CN201720876774.XU CN207079640U (en) | 2017-07-18 | 2017-07-18 | A kind of cast-in-place concrete pile pile bottom sediment thickness detection apparatus |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107288162A (en) * | 2017-07-18 | 2017-10-24 | 广州市建设工程质量安全检测中心 | A kind of cast-in-place concrete pile pile bottom sediment thickness detection apparatus and method |
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- 2017-07-18 CN CN201720876774.XU patent/CN207079640U/en active Active
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107288162A (en) * | 2017-07-18 | 2017-10-24 | 广州市建设工程质量安全检测中心 | A kind of cast-in-place concrete pile pile bottom sediment thickness detection apparatus and method |
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Effective date of registration: 20210128 Address after: 510000 No. 5 Lane three North Lane, Yuexiu District Temple Road, Guangzhou, Guangdong Patentee after: Guangzhou Guangjian Construction Engineering Testing Center Co.,Ltd. Patentee after: GUANGDONG RONGJUN CONSTRUCTION ENGINEERING TESTING Corp.,Ltd. Patentee after: BEIJING LRK SCIENCE & TECHNOLOGY Co.,Ltd. Address before: 510600 3rd floor, No.5, Lane 3, North 1st Street, siyouxin Road, Yuexiu District, Guangzhou City, Guangdong Province Patentee before: GUANGZHOU CONSTRUCTION QUALITY & SAFETY TESTING CENTER Patentee before: GUANGDONG RONGJUN CONSTRUCTION ENGINEERING TESTING Corp.,Ltd. Patentee before: BEIJING LRK SCIENCE & TECHNOLOGY Co.,Ltd. |