CN106759537A - The superfilled monitoring device of bored concrete pile and its application method - Google Patents
The superfilled monitoring device of bored concrete pile and its application method Download PDFInfo
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- CN106759537A CN106759537A CN201611152375.5A CN201611152375A CN106759537A CN 106759537 A CN106759537 A CN 106759537A CN 201611152375 A CN201611152375 A CN 201611152375A CN 106759537 A CN106759537 A CN 106759537A
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- E—FIXED CONSTRUCTIONS
- E02—HYDRAULIC ENGINEERING; FOUNDATIONS; SOIL SHIFTING
- E02D—FOUNDATIONS; EXCAVATIONS; EMBANKMENTS; UNDERGROUND OR UNDERWATER STRUCTURES
- E02D33/00—Testing foundations or foundation structures
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- E—FIXED CONSTRUCTIONS
- E02—HYDRAULIC ENGINEERING; FOUNDATIONS; SOIL SHIFTING
- E02D—FOUNDATIONS; EXCAVATIONS; EMBANKMENTS; UNDERGROUND OR UNDERWATER STRUCTURES
- E02D2600/00—Miscellaneous
- E02D2600/10—Miscellaneous comprising sensor means
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- General Life Sciences & Earth Sciences (AREA)
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- General Engineering & Computer Science (AREA)
- Structural Engineering (AREA)
- Piles And Underground Anchors (AREA)
Abstract
The present invention relates to a kind of superfilled monitoring device of bored concrete pile, including equipment supporter, monitoring sensor for realizing highly carrying out filling concrete real-time monitoring, and be fixedly installed on the equipment supporter, it is electrically connected with the monitoring sensor, alarm assemblies for feeding back the monitoring Sensor monitoring result, the monitoring sensor is connected by the coupling assembly being arranged on the equipment supporter with the equipment supporter, also include being fixedly installed on the equipment supporter, it is connected with the monitoring sensor and the alarm assemblies signal, the middle control main frame of signal transfer between for realizing the two.The present invention can by sensor detect different liquids in moisture, and then judge concrete whether reached setting absolute altitude and reach set absolute altitude after and alarm.So, effective influx height of bored concrete pile had both been ensure that, and had reduced superfilled amount to the full extent, and reduced and subsequently cut difficulty.
Description
Technical field
The present invention relates to one kind perfusion control device, more particularly to a kind of bored concrete pile used during filling concrete
Superfilled monitoring device and its application method, belong to building engineering field.
Background technology
Bored concrete pile is directly to open up section for circular port on designed stake position, places steel reinforcement cage after pore-forming in hole,
Concrete perfusion is formed, according to the difference of pore-forming technique, bored concrete pile can be divided into the bored concrete pile of dry operation pore-forming, mud off into
The bored concrete pile in hole and the bored concrete pile of manually digging hole etc., because without friction, without squeezing soil, noise is small, be suitable for when bored concrete pile has a construction
The advantages of City Building City Regions use, bored concrete pile obtains relatively broad application in construction.
Although application of the cast-in-place concrete pile in architectural engineering is more and more, the top mark control high of cast-in-place concrete pile
System is all the time one of difficult point of cast-in-place concrete pile engineering construction, because, due to many in bored concrete pile process
Reason is planted, such as admixture dosage is too high or water consumption is exceeded, causes concrete slump excessive or even isolates, and laitance occurs,
Laitance forms laitance layer through the post-concentration collection that vibrates on the top of concrete, and the intensity after laitance layer solidification is unable to reach bored concrete pile
The requirement of standard, therefore in order to avoid the influence of laitance layer, in the control high of top mark to bored concrete pile, often will be in the filling of setting
Superfilled specified altitude assignment on note stake height, general bored concrete pile needs hypervelocity for more than 500mm, and after the concrete has set by laitance portion
Point cut, thus if top mark high setting it is too low if cannot to avoid the pile body that laitance layer ultimately forms also just unqualified, if
Top mark high setting it is too high, then cause waste and the subsequent construction of concrete（Cut laitance layer and design high beyond bored concrete pile
Spend the concrete of part）Difficulty.
At present, in the control process of superfilled height, it is more difficult to which the problem of solution is how accurately to recognize concrete and float
The interface of slurry, so that it is determined that the actual height of concrete, traditional construction method is manually to be positioned over weight by lining rope
Whether the designed elevation position of bored concrete pile or bamboo pole feeler inspection, judge weight to staff by the feel or experience of staff
There is pulling force or whether there is concrete to apply thrust to bamboo pole and recognize the interface of concrete and laitance, but these methods pair
The requirement of operating personnel is higher, and cannot also ensure that weight or bamboo pole bottom are positioned exactly at the designed elevation position of bored concrete pile,
Therefore the identification error of interface is larger, simultaneously as building-site environment is complicated, these methods receive building-site operating environment
Influence is larger so that accuracy of identification is further reduced.
Chinese patent CN201310141689.5 discloses a kind of superfilled detector of underwater cast-in-place pile concrete and its application method,
But the device in the patent is only applicable to underwater cast-in-place pile, not fully suitable for common bored concrete pile.And, the device is
On the premise of bored concrete pile is superfilled, then determine whether superfilled height meets designed elevation by detector, therefore
The device be only used for it is superfilled after confirmation examine, it is impossible to realization is effectively controlled to superfilled height, and this dress
The application method put is complex, and operating efficiency is influenced whether to a certain extent.
So so far, a set of equipment can not solve the above problems perfectly, most of construction enterprises can only
Ensure pile quality to increase top mark mode high, but so, not only increase perfusion cost, and also result in money
The waste in source.
In addition, according to operating specification requirement, in order to ensure the pouring quality of concrete when cast-in-place pile concrete is poured,
It is required that 3~6m in passage Transducers Embedded in Concrete when pouring.In bored concrete pile filling process, the concrete highly meeting in passage
Higher than stake inner concrete liquid level, higher than stake inner concrete liquid level this part concrete we be defined as passage clout, this portion
Dividing clout can further increase bored concrete pile highly, cause waste of material.And in filling process, most of construction enterprises are not
Any treatment can be done to the intensity of the superfilled concrete of stake top, so, undoubtedly further increase bored concrete pile after the completion of perfusion
The difficulty that stake top cuts.
The content of the invention
In view of prior art has drawbacks described above, used during filling concrete the purpose of the present invention is to propose to one kind
The superfilled monitoring device of bored concrete pile and its application method.
The purpose of the present invention, will be achieved by the following technical programs：
A kind of superfilled monitoring device of bored concrete pile, including equipment supporter, also including for realizing highly carrying out reality to filling concrete
When the monitoring sensor monitored, and be fixedly installed on the equipment supporter and the monitoring sensor is electrically connected with, is used for
The alarm assemblies of the feedback monitoring Sensor monitoring result, the monitoring sensor is by being arranged on the equipment supporter
Coupling assembly is connected with the equipment supporter；Also include be fixedly installed on the equipment supporter and it is described monitoring sensor and
Alarm assemblies signal connection, for realizing the two between signal transfer middle control main frame.
Preferably, the middle control main frame realizes that the two signal is connected with the monitoring sensor by armored cable, described
Middle control main frame realizes that the two signal is connected with the alarm assemblies by signal-transmitting cable, network or bluetooth.
Preferably, the monitoring sensor is moisture monitoring sensor, and the alarm assemblies include three color warning lamps and honeybee
Ring device.
Preferably, the coupling assembly includes the cable winding drum being rotatablely arranged on the equipment supporter, and passes through
Wear and be placed in the center of the cable winding drum, for driving the cable winding drum to rotate and completing data signal transmission
Signal transaxle, the signal transaxle is fixedly connected with the cable winding drum, and one end of the signal transaxle stretches out in institute
State outside equipment supporter and be fixedly connected with folding hand-shaken handle.
Preferably, the coupling assembly also includes the armored cable, and the armored cable is uniformly coiled in the coiling
The outer circumferential of reel, its one end is electrically connected with the signal transaxle, the other end is electrically connected with the monitoring sensor.
Preferably, the armored cable includes the signal-transmitting cable for being used to complete data signal transmission, and is coated on
The signal-transmitting cable outer circumferential, the hard tension protective layer for shielding, the hard tension protective layer are steel wire
Rope, steel disc armor or chain.
Preferably, the monitoring sensor is cylinder, and its diameter is less than 49mm, and length is less than 325mm.
Preferably, also including for the monitoring sensor to be fixed on into steel reinforcement cage tail end designed elevation in filling process
The stationary fixture at place, the stationary fixture is movably connected with the steel reinforcement cage.
Preferably, the side of the equipment supporter is fixedly installed for completing the prison under the off working state of device
Survey the sensor support frame of sensor storage.
A kind of application method of the superfilled monitoring device of above-mentioned bored concrete pile, comprises the following steps：
S1, the superfilled monitoring device of bored concrete pile is moved to suitable station, stationary fixture is fixedly installed on setting for steel reinforcement cage tail end
At meter absolute altitude, then monitoring sensor is installed in the stationary fixture, and main frame is controlled in startup, then, in alarm assemblies
Amber light light and buzzing confirm, device immediately enter working condition；
S2, using loop wheel machine by the steel reinforcement cage transfer put designed elevation, make the stationary fixture with it is described monitoring sensor submerge
In mud；
S3, filling concrete is carried out,
When the monitoring sensor enters in mixed layer of the concrete with mud, the middle control main frame receives the monitoring and passes
The signal of sensor, the middle control main frame sends alarm assemblies described in signal enabling immediately, and the green light in the alarm assemblies is lighted
And with intermittence buzzing, device starts early warning, and now operator should slow down rate of flooding,
When the monitoring sensor enters in concrete layer, the middle control main frame receives the signal of the monitoring sensor,
The middle control main frame sends alarm assemblies described in signal enabling immediately, and the red light in the alarm assemblies is lighted and with continuation
Buzzing, device starts alarm, and now operator should terminate perfusion；
S4, end filling concrete, take out passage, and the recovery of the monitoring sensor is completed using coupling assembly, finally
Complete bored concrete pile perfusion.
Prominent effect of the invention is：The present invention can detect the moisture in different liquids by sensor, and then
Judge concrete whether reached setting absolute altitude and reach setting absolute altitude after and alarm, with remind operating personnel stop fill
Note concrete.So, effective influx height of bored concrete pile had both been ensure that, and had reduced superfilled amount to the full extent, had
Beneficial to the waste for reducing pouring material, reduce and follow-up cut difficulty.And whole operation process is completely using automation
Mode is carried out, and is influenceed smaller by human factor, so as to ensure that control accuracy and charging efficiency.
Meanwhile, the present invention in operating method for the operation delay to operating personnel and passage clout consideration, it is right
Position of the sensor in bored concrete pile to be processed is corrected, and realizes position adjustment with reference to coupling assembly, further protects
The accuracy of the final height of cast-in-place pile concrete liquid level has been demonstrate,proved, waste of material has been reduced.
In sum, deft design of the present invention, simple structure, operating accuracy is high, specifically use very high and promotion price
Value.
Hereinafter just accompanying drawing in conjunction with the embodiments, is described in further detail, so that of the invention to specific embodiment of the invention
Technical scheme is more readily understood, grasps.
Brief description of the drawings
Fig. 1 is dimensional structure diagram of the invention；
Fig. 2 is positive structure schematic of the invention；
Wherein：1st, equipment supporter；2nd, sensor is monitored；3rd, alarm assemblies；4th, middle control main frame；5th, armored cable；6th, cable winding drum；
7th, folding hand-shaken handle；8th, sensor support frame.
Specific embodiment
Present invention is disclosed a kind of superfilled monitoring device of the bored concrete pile used during filling concrete and its user
Method.
As shown in Fig. 1 ~ Fig. 2, a kind of superfilled monitoring device of bored concrete pile, including equipment supporter 1, also including for realizing to mixed
Solidifying soil influx height carries out the monitoring sensor 2 of real-time monitoring, and is fixedly installed on the equipment supporter 1 and the prison
Survey sensor 2 is electrically connected with, the alarm assemblies 3 for feeding back the monitoring monitoring result of sensor 2, the monitoring sensor 2
It is connected with the equipment supporter 1 by the coupling assembly being arranged on the equipment supporter 1；Also include being fixedly installed on described setting
On standby support 1 and the monitoring sensor 2 and the connection of the signal of the alarm assemblies 3, for realizing the two between in signal transfer
Control main frame 4.
The middle control main frame 4 realizes that the two signal is connected with the monitoring sensor by armored cable 5, the middle control master
Machine 4 realizes that the two signal is connected with the alarm assemblies 3 by signal-transmitting cable, network or bluetooth.Network described herein
Cable network or wireless network can be subdivided into, because above-mentioned connected mode belongs to prior art, not be done further go to live in the household of one's in-laws on getting married herein
State.In the present embodiment, the middle control main frame 4 is connected with the alarm assemblies 3 by signal-transmitting cable completion signal.
The monitoring sensor 2 is moisture monitoring sensor, and the alarm assemblies 3 include three color warning lamps and buzzer.
The coupling assembly includes the cable winding drum 6 being rotatablely arranged on the equipment supporter 1, and through setting
In the center of the cable winding drum 6, for driving the cable winding drum 6 to rotate and completing the signal of data signal transmission
Transaxle（Not shown in figure）, the signal transaxle is fixedly connected with the cable winding drum 6, one end of the signal transaxle
Stretch out in outside the equipment supporter 1 and be fixedly connected with folding hand-shaken handle 7.
The coupling assembly also includes the armored cable 5, and the armored cable 5 is uniformly coiled in the cable winding drum 6
Outer circumferential, its one end is electrically connected with the signal transaxle, the other end with it is described monitoring sensor 2 be electrically connected with.
During actual use, operator can drive the coiling by shaking the folding hand-shaken handle 7
Reel 6 is rotated, so as to complete the stretching, extension of the armored cable 5 and reclaim.
The armored cable 5 includes the signal-transmitting cable for being used to complete data signal transmission, and is coated on the letter
Number transmission cable outer circumferential, the hard tension protective layer for shielding, the hard tension protective layer are steel wire rope, steel disc
Armor or chain.
The monitoring sensor 2 is irregular cylinder of the size less than gap between passage and steel reinforcement cage, and its diameter is small
In 49mm, length is less than 325mm, and such The concrete specification is in order to be further ensured that the use of the monitoring sensor 2, specifically
For, the minimum clearance between the passage and steel reinforcement cage is 80mm, and in order to ensure the accuracy of monitoring, the monitoring is passed
Sensor 2 when in use, should ensure that in more than 15mm with intermetallic distance.
The superfilled monitoring device of bored concrete pile also includes being used in filling process the monitoring sensor 2 is fixed on into steel
Stationary fixture at muscle cage tail end designed elevation（Not shown in figure）, the stationary fixture movably connects with the steel reinforcement cage
Connect.Specifically, the stationary fixture can be connected or be snapped connection with the steel reinforcement cage using bandage, but need to ensure described solid
Clamp tool can be removed smoothly on the steel reinforcement cage, so that the stationary fixture can repeatedly be reclaimed, reused.This
Place is also to be noted that the connection between the stationary fixture and the steel reinforcement cage needs to have certain rigidity, so sets
The purpose put is to avoid during filling concrete, and the monitoring sensor 2 occurs vertical because of the continuous mud for rising
Direction displacement, so as to influence monitoring effect.
The side of the equipment supporter 1 is fixedly installed for completing the monitoring sensing under the off working state of device
The sensor support frame 8 of the storage of device 2.
A kind of application method of the superfilled monitoring device of above-mentioned bored concrete pile, comprises the following steps：
S1, the superfilled monitoring device of bored concrete pile is moved to suitable station, stationary fixture is fixedly installed on setting for steel reinforcement cage tail end
At meter absolute altitude, then monitoring sensor 2 is installed in the stationary fixture, and main frame 4, then, alarm assemblies 3 are controlled in startup
In amber light light and buzzing confirm, device immediately enter working condition；
S2, using loop wheel machine by the steel reinforcement cage transfer put designed elevation, make the stationary fixture with it is described monitoring sensor 2 submerge
In mud；
S3, filling concrete is carried out, because the density of each material in mud is different, therefore mud integrally occurs lamination,
When the monitoring sensor 2 enters in mixed layer of the concrete with mud, the middle control main frame 4 receives the monitoring
The signal of sensor 2, the middle control main frame 4 sends alarm assemblies 3 described in signal enabling immediately, green in the alarm assemblies 3
Lamp is lighted and with intermittence buzzing, and device starts early warning, and now operator should slow down rate of flooding,
When the monitoring sensor 2 enters in concrete layer, the middle control main frame 4 receives the letter of the monitoring sensor 2
Number, the middle control main frame 4 sends alarm assemblies 3 described in signal enabling immediately, and the red light in the alarm assemblies 3 is lighted and adjoint
Continuation buzzing, device starts alarm, and now operator should terminate perfusion；
S4, end filling concrete, take out passage, and the recovery of the monitoring sensor 2 is completed using coupling assembly, finally
Complete bored concrete pile perfusion.
The present invention can detect the moisture in different liquids by sensor, and then judge whether concrete has reached
Setting absolute altitude and reach setting absolute altitude after and alarm, with remind operating personnel stop concrete perfusion.So, both
Effective influx height of bored concrete pile is ensure that, and reduces superfilled amount to the full extent, be conducive to reducing the wave of pouring material
Take, reduce and follow-up cut difficulty.And whole operation process is carried out by the way of automation completely, by human factor
Influence is smaller, so as to ensure that control accuracy and charging efficiency.
Meanwhile, the present invention in operating method for the operation delay to operating personnel and passage clout consideration, it is right
Position of the sensor in bored concrete pile to be processed is corrected, and realizes position adjustment with reference to coupling assembly, further protects
The accuracy of the final height of cast-in-place pile concrete liquid level has been demonstrate,proved, waste of material has been reduced.
In sum, deft design of the present invention, simple structure, operating accuracy is high, specifically use very high and promotion price
Value.
It is obvious to a person skilled in the art that the invention is not restricted to the details of above-mentioned one exemplary embodiment, Er Qie
In the case of without departing substantially from spirit and essential characteristics of the invention, the present invention can be in other specific forms realized.Therefore, no matter
From the point of view of which point, embodiment all should be regarded as exemplary, and be nonrestrictive, the scope of the present invention is by appended power
Profit requires to be limited rather than described above, it is intended that all in the implication and scope of the equivalency of claim by falling
Change is included in the present invention, and any reference in claim should not be considered as the claim involved by limitation.
Moreover, it will be appreciated that although the present specification is described in terms of embodiments, not each implementation method is only wrapped
Containing an independent technical scheme, this narrating mode of specification is only that for clarity, those skilled in the art should
Specification an as entirety, the technical scheme in each embodiment can also be formed into those skilled in the art through appropriately combined
May be appreciated other embodiment.
Claims (10)
1. a kind of superfilled monitoring device of bored concrete pile, including equipment supporter（1）, it is characterised in that：Also include for realizing to coagulation
Native influx height carries out the monitoring sensor of real-time monitoring（2）, and it is fixedly installed on the equipment supporter（1）It is upper and described
Monitoring sensor（2）Be electrically connected with, for feeding back the monitoring sensor（2）The alarm assemblies of monitoring result（3）, the monitoring
Sensor（2）By being arranged at the equipment supporter（1）On coupling assembly and the equipment supporter（1）Connection；Also include solid
Surely it is arranged at the equipment supporter（1）Upper and described monitoring sensor（2）And the alarm assemblies（3）Signal connection, for reality
The middle control main frame of signal transfer between both existing（4）.
2. the superfilled monitoring device of bored concrete pile according to claim 1, it is characterised in that：The middle control main frame（4）With it is described
Monitoring sensor is by armored cable（5）Realize the two signal connection, the middle control main frame（4）With the alarm assemblies（3）Borrow
Signal-transmitting cable, network or bluetooth is helped to realize that the two signal is connected.
3. the superfilled monitoring device of bored concrete pile according to claim 1, it is characterised in that：The monitoring sensor（2）It is water
Divide monitoring sensor, the alarm assemblies（3）Including three color warning lamps and buzzer.
4. the superfilled monitoring device of bored concrete pile according to claim 2, it is characterised in that：The coupling assembly includes rotatable
Be arranged at the equipment supporter（1）On cable winding drum（6）, and it is disposed through the cable winding drum（6）Centre bit
Put, for driving the cable winding drum（6）Rotate and complete the signal transaxle of data signal transmission, the signal transaxle
With the cable winding drum（6）It is fixedly connected, one end of the signal transaxle stretches out in the equipment supporter（1）Outward and with folding
Stacked wind（7）It is fixedly connected.
5. the superfilled monitoring device of bored concrete pile according to claim 4, it is characterised in that：The coupling assembly also includes described
Armored cable（5）, the armored cable（5）Uniformly coil in the cable winding drum（6）Outer circumferential, its one end and the letter
Number transaxle is electrically connected with, the other end and the monitoring sensor（2）It is electrically connected with.
6. the superfilled monitoring device of bored concrete pile according to claim 5, it is characterised in that：The armored cable（5）Including with
In the signal-transmitting cable of completion data signal transmission, and it is coated on the signal-transmitting cable outer circumferential, plays protection work
Hard tension protective layer, the hard tension protective layer is steel wire rope, steel disc armor or chain.
7. the superfilled monitoring device of bored concrete pile according to claim 1, it is characterised in that：The monitoring sensor（2）It is post
Body, its diameter is less than 49mm, and length is less than 325mm.
8. the superfilled monitoring device of bored concrete pile according to claim 1, it is characterised in that：Also include being used in filling process
By the monitoring sensor（2）The stationary fixture being fixed at steel reinforcement cage tail end designed elevation, the stationary fixture and the steel
Muscle cage is movably connected.
9. the superfilled monitoring device of bored concrete pile according to claim 1, it is characterised in that：The equipment supporter（1）Side
It is fixedly installed for completing the monitoring sensor under the off working state of device（2）The sensor support frame of storage（8）.
10. the application method of a kind of superfilled monitoring device of bored concrete pile as described in claim 1 ~ 9 is any, it is characterised in that wrap
Include following steps：
S1, the superfilled monitoring device of bored concrete pile is moved to suitable station, stationary fixture is fixedly installed on setting for steel reinforcement cage tail end
At meter absolute altitude, sensor will be then monitored（2）It is installed in the stationary fixture, and main frame is controlled in startup（4）, then, alarm
Component（3）In amber light light and buzzing confirm, device immediately enter working condition；
S2, using loop wheel machine by the steel reinforcement cage transfer put designed elevation, make the stationary fixture with the monitoring sensor（2）Leaching
Not in mud；
S3, filling concrete is carried out,
When the monitoring sensor（2）When in into the mixed layer of concrete and mud, the middle control main frame（4）Receive described
Monitoring sensor（2）Signal, the middle control main frame（4）Alarm assemblies described in signal enabling are sent immediately（3）, the alarm group
Part（3）In green light light and with intermittence buzzing, device starts early warning, and now operator should slow down rate of flooding,
When the monitoring sensor（2）When in into concrete layer, the middle control main frame（4）Receive the monitoring sensor
（2）Signal, the middle control main frame（4）Alarm assemblies described in signal enabling are sent immediately（3）, the alarm assemblies（3）In
Red light is lighted and with continuation buzzing, and device starts alarm, and now operator should terminate perfusion；
S4, end filling concrete, take out passage, and complete the monitoring sensor using coupling assembly（2）Recovery, most
Bored concrete pile perfusion is completed eventually.
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| CN201611152375.5A CN106759537B (en) | 2016-12-14 | 2016-12-14 | The superfilled monitoring device of bored concrete pile and its application method |
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|---|---|---|---|
| CN201611152375.5A CN106759537B (en) | 2016-12-14 | 2016-12-14 | The superfilled monitoring device of bored concrete pile and its application method |
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| CN108797569A (en) * | 2018-06-26 | 2018-11-13 | 江苏地基工程有限公司 | A kind of control method that drilled pile novel energy-conserving pile crown is superfilled |
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| CN110438979A (en) * | 2019-07-24 | 2019-11-12 | 武汉武建机械施工有限公司 | A kind of superfilled ancillary equipment of measurement concrete and the superfilled construction method of concrete |
| CN113006165A (en) * | 2021-03-05 | 2021-06-22 | 广州市市政集团有限公司 | Bored concrete pile surpasses irritates monitoring device |
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| CN108797569A (en) * | 2018-06-26 | 2018-11-13 | 江苏地基工程有限公司 | A kind of control method that drilled pile novel energy-conserving pile crown is superfilled |
| CN108824504A (en) * | 2018-07-10 | 2018-11-16 | 长江岩土工程总公司（武汉） | The superfilled height detecting device of drill-pouring pile concrete and method |
| CN110438979A (en) * | 2019-07-24 | 2019-11-12 | 武汉武建机械施工有限公司 | A kind of superfilled ancillary equipment of measurement concrete and the superfilled construction method of concrete |
| CN113006165A (en) * | 2021-03-05 | 2021-06-22 | 广州市市政集团有限公司 | Bored concrete pile surpasses irritates monitoring device |
| CN113006165B (en) * | 2021-03-05 | 2022-07-29 | 广州市市政集团有限公司 | Bored concrete pile surpasses irritates monitoring device |
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