CN104515791A - Concrete pumping capability monitoring method and device - Google Patents
Concrete pumping capability monitoring method and device Download PDFInfo
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- CN104515791A CN104515791A CN201410798604.5A CN201410798604A CN104515791A CN 104515791 A CN104515791 A CN 104515791A CN 201410798604 A CN201410798604 A CN 201410798604A CN 104515791 A CN104515791 A CN 104515791A
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Abstract
The invention discloses a concrete pumping capability monitoring method and device. The concrete pumping capability monitoring device comprises sensors, a signal acquisition device, a communication controller and a signal compiling module, wherein a plurality of sensors are arranged on the outer wall of a concrete conveying pump tubes at equal intervals and are respectively connected with the input ends of the signal acquisition device through leads; the output end of the signal acquisition device is connected with the input end of the communication controller; the signal compiling module is connected with the output end of the communication controller; the sensors are used for monitoring the deformation of the mounting parts on the outer wall of the concrete conveying pump tube; the signal acquisition device is used for acquiring deformation electric signals detected by the sensors; the communication controller is used for receiving the deformation electric signal of the signal acquisition device; the signal compiling module is used for converting, recording and processing the deformation electric signal into deformation visible data. The method and the device are convenient to operate, and rapid, convenient and accurate in testing on high-level far-distance concrete pumping.
Description
Technical field
The invention belongs to concrete pumping field, particularly relate to a kind of concrete aid pumpability monitoring method and device.
Background technology
Along with expanding economy, skyscraper and even high-rise building are surging forward in big city, and premixed pumping concrete technology obtains and develops widely and promote, in building structure concrete construction, achieve good effect.Premixed pumping concrete technology is high with its efficiency, expense is low, save labour, horizontal and vertical is transported and can be completed, uses the advantages such as narrow working-yard by continuously poured in one, is more and more subject to people's attention.
Although pump concrete has plurality of advantages, along with pumping distance or the increase of pumping height, the raising of pump concrete strength grade, the accident of engineering site generation plugging or booster happens occasionally.Once there is plugging or booster situation, light then affect concreting efficiency, heavy then affect the engineering construction duration, if pump concrete strength grade is high, pumping distance or pumping height high, when there is booster situation under high pump pressure, even can there is security incident, therefore, need to pay much attention to the pumping situation of pump concrete.
At present, whether concrete aid pumpability is implemented by two kinds of modes: 1, be good by observing or test the workability qualitative judgement concrete states such as the concrete slump, divergence before concrete pumping, the shortcoming of the method is that similar this method of testing only can qualitatively judge concrete and enters pump state, and can not judge that whether the pumping of concrete in pump line be good; In addition, this class testing is only the test under normality, and pumping procedure is the concrete delivery service under having pumping pressure to exist; Therefore, the sustainability of concrete in pumping procedure cannot be determined by testing concrete workability.2, be by observing the parameter supervision such as the tensimeter that carries of concrete pump and discharge capacity in concrete pumping process, the shortcoming of this method is: first, the change observing pumping pressure in concrete pumping process needs abundant operating experience, and due to the difference such as strength grade, starting material, match ratio of pump concrete, judge that pumping sustainability difficulty is large, rely on and observe the Parameters variation such as pumping pressure and discharge capacity, judge that the result of pumping sustainability relatively lags behind, the possibility occurring plugging or booster cannot be judged in advance; Second, when there is plugging phenomenon in concrete pumping process, rely on and observe the position that the parameter such as pump machine tensimeter or discharge capacity cannot sentence plugging generation, need construction worker along pump line section by section beat inspection, when beaing inspection and being difficult to find plugging position, even need workman to tear pipe inspection open in the multiple position of pump line, so not only consumed one's strength, time but also there is potential safety hazard.In a word, rely on current method to judge concrete aid pumpability, judged result is delayed, meanwhile, consumes more manually, affect operating efficiency, there is potential safety hazard.
Theoretically, concrete is in pumping procedure, and because himself bears pump function, the pump pressure of bearing, under pump line constraint, can cause pump line to be out of shape, and the pump pressure of bearing when concrete increases, then pump line distortion can corresponding increase.Therefore, can by the distortion of monitoring pump line, quantitative response concrete is pumping sustainability under pump function.By quantitatively calculating the plugging position that both can judge that concrete occurs, the risk of plugging can be there is again according to calculating anticipation concrete, determine whether to possess the ability continuing pumping.
Chinese patent CN201220094565 provides a kind of concrete pump pipe pressure monitoring and alarm device, and it comprises two changing sensors, signal processing apparatus and warning devices.These two changing sensors are separately positioned on the both sides of pump line, for detecting the deformation quantity of pump line external diameter along the diametric(al) of pump line.This signal processing apparatus is for receiving the output signal of these two changing sensors, and preset the upper and lower bound value of pump line inner concrete working pressure, then compare calculating the working pressure determined according to the output signal of this changing sensor with the upper and lower bound value preset, if this working pressure is lower than lower limit or higher than higher limit, then this signal processing apparatus outputs signal to this warning device, starts this warning device.This device can accurately test out concrete in pumping procedure, the working pressure of pump line optional position, and can carry out Exact Forecast and location to plugging, booster, for Concrete Pumping Construction brings great technical progress and economic benefit.The deficiency of this patent is: the quantity 1, defining sensor is two, when pumping distance or highly large time, only have the Monitoring Data of two sensors to be difficult to show or represent the actual conditions of a whole set of pump line; 2, the upper and lower bound value difficulty presetting pump line inner concrete working pressure is very large, because the working pressure of pump line inner concrete changes with pumping height, and there is no the working pressure that a kind of method accurately can calculate pump line inner concrete at present, therefore the setting upper and lower bound value of working pressure thus the poor operability of early warning; 3, awp difficulty is calculated according to changing sensor signal large, because the deformation quantity of monitoring in concrete pumping process includes the deformation quantity of concrete to pump line vibrations in the deformation quantity of the deformation quantity of pump line pressure, pump line self temperature influence, pumping procedure, therefore, be difficult to effectively calculate the working pressure of concrete to pump line effect, thus be difficult to accurately compare awp and the upper and lower bound value setting working pressure.
Summary of the invention
The present invention is directed to complicated operation in existing concrete aid pumpability monitoring technology, the coarse problem of data, provide a kind of concrete aid pumpability monitoring method and device, for high-rise, remote concrete pumping, easy to operate, test is quick accurate.
The technical solution adopted for the present invention to solve the technical problems is: a kind of concrete aid pumpability monitoring method, the method comprises the following steps, equidistantly lay the sensor of several monitoring deformation at concrete delivery pump pipe outer wall, sensor is for obtaining the deformation electric signal of the concrete delivery pump pipe outer wall at this sensor setting place; Gather the deformation electric signal of each sensor and be compiled as deformation viewdata, recording i-th sensor at deformation viewdata corresponding to t
obtain the minimum deformation viewdata that in monitoring time △ t, i-th sensor is corresponding
the concrete calculating i-th sensor place place can pumping index B:
Can pumping index B according to the concrete at i-th sensor place place, judge whether the concrete of this place's concrete delivery pump pipe outer wall can meet default aid pumpability standard by pumping index B, if meet default aid pumpability standard, then can carry out pumping.
By technique scheme, described default aid pumpability standard is 0.5≤B≤1.5.
By technique scheme, described sensor is strain transducer or strain gauge.
By technique scheme, described strain transducer is specially foil gauge, and strain gauge is specially taseometer.
The present invention also provides a kind of concrete aid pumpability monitoring device, comprise sensor, signal pickup assembly, communication controller, signal collector, several sensor spacing are laid in concrete delivery pump pipe outer wall, each sensor is connected with the input end of signal pickup assembly respectively by wire, the output terminal of signal pickup assembly is connected with the input end of communication controller, and signal collector is connected with the output terminal of communication controller; Sensor is for monitoring the deformation of its installation place on concrete delivery pump pipe outer wall, the deformation electric signal that signal pickup assembly measures for gathering each sensor, communication controller is used for the deformation electric signal of Received signal strength harvester, and signal collector is used for deformation electric signal to be converted to deformation viewdata and recording processing.
By technique scheme, described sensor is strain transducer or strain gauge.
By technique scheme, described strain transducer is specially foil gauge, and strain gauge is specially taseometer.
By technique scheme, the described each bar wire each sensor being connected to signal pickup assembly has identical material, same size, equal length.
By technique scheme, described lead material is copper.
By technique scheme, described communication controller is connected by wired or wireless mode with signal pickup assembly, and described signal pickup assembly is single channel or hyperchannel.
The beneficial effect that the present invention produces is: (one) test is quick: concrete aid pumpability monitoring device is easy to connect, can realize in concrete pumping process, the Real-Time Monitoring of concrete delivery pump pipe outer wall aid pumpability;
(2) easy to operate: proving installation install operation process is simple, and tester can grasp after simple training;
(3) data quantitative: in pump concrete process, the large I quantitative test of concrete delivery pump pipe outer wall deformation goes out accordingly result;
(4) data can effectively contrast: the largest deformation value of same monitoring point compared with the minimum deformation values in during monitoring, effectively can judge the quality of concrete aid pumpability, judge plugging risk and plugging position;
(5) be easy to promote: monitoring device of the present invention is customizable or buy, easy to carry;
(6) high level, high-rise building, long distance, all kinds of concrete aid pumpability monitoring of over distance is specially adapted to.
Accompanying drawing explanation
Below in conjunction with drawings and Examples, the invention will be further described, in accompanying drawing:
Fig. 1 is the structural representation that embodiment of the present invention concrete aid pumpability monitoring device is arranged on vertical pump line;
Fig. 2 is communication controller, signal collector connection diagram in embodiment of the present invention concrete aid pumpability monitoring device;
Fig. 3 is the structural representation that embodiment of the present invention concrete aid pumpability monitoring device is arranged on curved pump line;
Fig. 4 is the concrete delivery pump pipe outer wall Deformation Monitoring Data table in the embodiment of the present invention one in monitoring time;
Fig. 5 is the concrete delivery pump pipe outer wall Deformation Monitoring Data table in the embodiment of the present invention two in monitoring time;
Fig. 6 is the concrete delivery pump pipe outer wall Deformation Monitoring Data table in the embodiment of the present invention three in monitoring time;
Fig. 7 is the concrete delivery pump pipe outer wall Deformation Monitoring Data table in the embodiment of the present invention four in monitoring time.
Embodiment
In order to make object of the present invention, technical scheme and advantage clearly understand, below in conjunction with drawings and Examples, the present invention is further elaborated.Should be appreciated that specific embodiment described herein only in order to explain the present invention, be not intended to limit the present invention.
A kind of concrete aid pumpability monitoring method, the method comprises the following steps, equidistantly lay the sensor of several monitoring deformation at concrete delivery pump pipe outer wall, sensor is for obtaining the deformation electric signal of the concrete delivery pump pipe outer wall at this sensor setting place; Gather the deformation electric signal of each sensor and be compiled as deformation viewdata, recording i-th sensor at deformation viewdata corresponding to t
obtain the minimum deformation viewdata that in monitoring time △ t, i-th sensor is corresponding
the concrete calculating i-th sensor place place can pumping index B:
Can pumping index B according to the concrete at i-th sensor place place, judge whether the concrete of this place's concrete delivery pump pipe outer wall can meet default aid pumpability standard by pumping index B.
Wherein, described default aid pumpability standard is 0.5≤B≤1.5.
Further, described sensor is strain transducer or strain gauge.
Wherein, described strain transducer is specifically as follows foil gauge, and strain gauge is specially taseometer.
The present invention also provides a kind of concrete aid pumpability monitoring device, as shown in Figure 1, Figure 2, Figure 3 shows, this device comprises sensor 1, signal pickup assembly 2, communication controller 4, signal collector 5, several sensor spacing are laid in concrete delivery pump pipe outer wall, each sensor is connected with the input end of signal pickup assembly respectively by wire 3, the output terminal of signal pickup assembly is connected with the input end of communication controller, and signal collector is connected with the output terminal of communication controller; Sensor is for monitoring the deformation of its installation place on concrete delivery pump pipe outer wall, the deformation electric signal that signal pickup assembly measures for gathering each sensor, communication controller is used for the deformation electric signal of Received signal strength harvester, and signal collector is used for deformation electric signal to be converted to deformation viewdata and recording processing.For ease of quick observation concrete aid pumpability directly perceived, deformation electric signal is converted to tables of data or the function curve of deformation viewdata by signal collector.
Principle of work of the present invention is: the sensor of Deformation Monitoring is laid in pump line outer wall and firm pasting according to a determining deviation, successively sensor, signal pickup assembly, communication controller, signal collector are connected, start monitoring of software, real-time reading pump line deformation data, records the distortion of the i-th measuring point in t
pump line distortion minimum value in record monitoring time △ t
concrete aid pumpability is characterized according to following formulae discovery:
When concrete aid pumpability is good, to the monitoring of a certain prison monitoring point i in time t, pump line distortion remains unchanged substantially, then calculate B value close to 1, when concrete aid pumpability is bad, when even having plugging risk, to a certain monitoring point i when this situation occurs, concrete enlarges markedly pump line acting force, and pump line distortion obviously increases, now, calculate B value and be greater than 1.Can intuitive judgment concrete aid pumpability by B value.
Wherein, sensor is strain transducer or strain gauge.Further, described strain transducer is specifically as follows foil gauge, and strain gauge is specially taseometer.
Further, the described each bar wire each sensor being connected to signal pickup assembly has identical material, same size, equal length, to guarantee the accuracy of Monitoring Data.Lead material is specifically as follows copper.Wire can be diameter 2mm, and length is equal, the copper conductor that model is consistent.
Further, communication controller is connected by wired or wireless mode with signal pickup assembly, and described signal pickup assembly is single channel or hyperchannel.For convenience of connecting, signal pickup assembly can adopt multi-channel module, and for ease of the communication transfer of data, communication controller can be wireless transmission method.
Signal collector is out of shape the mode of time-history curves or tables of data by display pump line, judges concrete aid pumpability.Sensor adopts foil gauge or the distortion of taseometer monitoring pump line, judges concrete aid pumpability.
Embodiment one: strain-ga(u)ge transducer is laid in vertical pump line, arrange along pump line hoop, spacing laid by strain-ga(u)ge transducer is 50m, before strain-ga(u)ge transducer is pasted and is fixed on pump line wall, first the pump line wall intending pasting position is polished smooth, fixing strain-ga(u)ge transducer is pasted afterwards by 502 glue, and use silica gel sealing strain-ga(u)ge transducer, strain-ga(u)ge transducer along pump line direction according to number consecutively from bottom to up, after starting monitoring device and signal program compiler, record the pump line distortion of each monitoring point, the monitoring of concrete aid pumpability is carried out by the form of tables of data.Be illustrated in figure 4 the pump line deformation measurement data table in time △ t.Wherein ellipsis " ... " represent the pump line strain in monitoring point, abridged and monitoring time.Can obtain by calculating each monitoring point B value, B value is all close to 1, and concrete aid pumpability is good; The present embodiment is the pumping height of 150m, and strength grade of concrete is C40, and actual pumping procedure is smooth; Result of calculation and actual conditions are coincide.
Embodiment two: strain-ga(u)ge transducer is laid on the bend pipe of 120m At The Height, before and after bend pipe corner, hoop is arranged, foil gauge before corner is numbered 1, foil gauge after corner is numbered 2, before strain-ga(u)ge transducer is pasted and is fixed on pump line wall, first the pump line wall intending pasting position is polished smooth, fixing strain-ga(u)ge transducer is pasted afterwards by 502 glue, and use silica gel sealing strain-ga(u)ge transducer, after starting pump line deformation monitoring equipment and signal program compiler, record the pump line distortion of each prison monitoring point, by the form concrete aid pumpability monitoring method of tables of data.Be illustrated in figure 5 the Tube Bending Deformation Monitoring Data table in time △ t.Ellipsis " ... " represent the pump line strain in monitoring point, abridged and monitoring time.Can obtain by calculating each monitoring point B value, B value is all close to 1, and concrete aid pumpability is good.The pipe bent position of the present embodiment is 120m pumping height, and strength grade of concrete is C40, and actual pumping procedure is smooth; Result of calculation and actual conditions are coincide.
Embodiment three: strain-ga(u)ge transducer is laid in vertical pump line, arrange along pump line hoop, spacing laid by strain-ga(u)ge transducer is 50m, before strain-ga(u)ge transducer is pasted and is fixed on pump line wall, first the pump line wall intending pasting position is polished smooth, fixing strain-ga(u)ge transducer is pasted afterwards by 502 glue, and use silica gel sealing strain-ga(u)ge transducer, strain-ga(u)ge transducer along pump line direction according to number consecutively from bottom to up, after starting pump line deformation monitoring equipment and signal program compiler, record the pump line distortion of each prison monitoring point, by the form concrete aid pumpability monitoring method of tables of data.Be illustrated in figure 6 the pump line deformation measurement data table in time △ t.Ellipsis " ... " represent the pump line strain in monitoring point, abridged and monitoring time.Can obtain by calculating each monitoring point B value, B value 4.35,2# monitoring point, 1# monitoring point B value 4.28,3# monitoring point B value 1.01, in 1#, 2# monitoring point, B value in place enlarges markedly, and concrete aid pumpability is bad, between 1#, 2# monitoring point, in pump line section, plugging or pipe explosion accident can occur; The present embodiment is the pumping height of 150m, and strength grade of concrete is C40, and the pumping procedure incipient stage is smooth, and interstage pumping efficiency is on the low side, deuterogenesis's plugging, and plugging position occurs between 1# measuring point and 2# measuring point, near 1# measuring point place; Result of calculation and actual conditions are coincide, and plugging generation position judgment and actual conditions are coincide.
Embodiment four: strain-ga(u)ge transducer is laid on the bend pipe of 120m At The Height, before and after bend pipe corner, hoop is arranged, foil gauge before corner is numbered 1, foil gauge after corner is numbered 2, before strain-ga(u)ge transducer is pasted and is fixed on pump line wall, first the pump line wall intending pasting position is polished smooth, fixing strain-ga(u)ge transducer is pasted afterwards by 502 glue, and use silica gel sealing strain-ga(u)ge transducer, after starting pump line deformation monitoring equipment and signal program compiler, record the pump line distortion of each prison monitoring point, by the form concrete aid pumpability monitoring method of tables of data.Be illustrated in figure 7 the Tube Bending Deformation Monitoring Data table in time t.Ellipsis " ... " represent the pump line strain in monitoring point, abridged and monitoring time.Can obtain by calculating each monitoring point B value, B value 4.84,2# monitoring point, 1# monitoring point B value 1.07, in 1# monitoring point, B value in place enlarges markedly, and concrete aid pumpability is bad, in bend pipe corner, plugging or pipe explosion accident can occur; The pipe bent position of the present embodiment is 120m pumping height, and the pumping procedure incipient stage is smooth, and interstage pumping efficiency is on the low side, deuterogenesis's plugging, and plugging position occurs near 1# measuring point, in bend pipe corner; Result of calculation and actual conditions are coincide, and plugging generation position judgment and actual conditions are coincide.
From above-described embodiment, adopt the inventive method can quick, convenient judgement concrete aid pumpability whether excellent, can fast, accurately judge that the risk of plugging appears in concrete, and pipeline jam accident occur time plugging occur position.The present invention is especially high-rise for pump concrete, remote concrete pumping, tests quick, easy to operate, data quantitative, data can effectively contrast, is easy to promote.
Should be understood that, for those of ordinary skills, can be improved according to the above description or convert, and all these improve and convert the protection domain that all should belong to claims of the present invention.
Claims (10)
1. a concrete aid pumpability monitoring method, it is characterized in that, the method comprises the following steps, and equidistantly lay the sensor of several monitoring deformation at concrete delivery pump pipe outer wall, sensor is for obtaining the deformation electric signal of the concrete delivery pump pipe outer wall at this sensor setting place; Gather the deformation electric signal of each sensor and be compiled as deformation viewdata, recording i-th sensor at deformation viewdata corresponding to t
, obtain the minimum deformation viewdata that in monitoring time △ t, i-th sensor is corresponding
, the concrete calculating i-th sensor place place can pumping index B:
Can pumping index B according to the concrete at i-th sensor place place, judge whether the concrete of this place's concrete delivery pump pipe outer wall can meet default aid pumpability standard by pumping index B.
2. concrete aid pumpability monitoring method according to claim 1, is characterized in that, described default aid pumpability standard is 0.5≤B≤1.5.
3. concrete aid pumpability monitoring method according to claim 1 and 2, is characterized in that, described sensor is strain transducer or strain gauge.
4. concrete aid pumpability monitoring method according to claim 3, it is characterized in that, described strain transducer is specially foil gauge, and strain gauge is specially taseometer.
5. a concrete aid pumpability monitoring device, it is characterized in that, comprise sensor, signal pickup assembly, communication controller, signal collector, several sensor spacing are laid in concrete delivery pump pipe outer wall, each sensor is connected with the input end of signal pickup assembly respectively by wire, the output terminal of signal pickup assembly is connected with the input end of communication controller, and signal collector is connected with the output terminal of communication controller; Sensor is for monitoring the deformation of its installation place on concrete delivery pump pipe outer wall, the deformation electric signal that signal pickup assembly measures for gathering each sensor, communication controller is used for the deformation electric signal of Received signal strength harvester, and signal collector is used for deformation electric signal to be converted to deformation viewdata and recording processing.
6. concrete aid pumpability monitoring device according to claim 5, is characterized in that, described sensor is strain transducer or strain gauge.
7. concrete aid pumpability monitoring device according to claim 6, it is characterized in that, described strain transducer is specially foil gauge, and strain gauge is specially taseometer.
8. the concrete aid pumpability monitoring device according to claim 5 or 6 or 7, is characterized in that, the described each bar wire each sensor being connected to signal pickup assembly has identical material, same size, equal length.
9. concrete aid pumpability monitoring device according to claim 8, is characterized in that, described lead material is copper.
10. concrete aid pumpability monitoring device according to claim 9, it is characterized in that, described communication controller is connected by wired or wireless mode with signal pickup assembly, and described signal pickup assembly is single channel or hyperchannel.
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| CN109373189A (en) * | 2018-10-24 | 2019-02-22 | 中国建筑股份有限公司 | A kind of device and method measuring concrete pump pipe blocking position |
| CN110222472A (en) * | 2019-06-28 | 2019-09-10 | 北京工业大学 | A kind of method of plugging risk during judgement concrete pumping |
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| CN114062177A (en) * | 2021-11-26 | 2022-02-18 | 黄河水利委员会黄河水利科学研究院 | A kind of monitoring method for concrete erosion loss in flow channel of hydraulic building |
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| CN113720909A (en) * | 2021-08-19 | 2021-11-30 | 中国建筑第八工程局有限公司 | Sliding lifting type automatic detection robot for concrete engineering and detection method thereof |
| CN114062177A (en) * | 2021-11-26 | 2022-02-18 | 黄河水利委员会黄河水利科学研究院 | A kind of monitoring method for concrete erosion loss in flow channel of hydraulic building |
| CN114062177B (en) * | 2021-11-26 | 2023-12-05 | 黄河水利委员会黄河水利科学研究院 | Hydraulic building runner concrete erosion loss monitoring method |
| CN114993378A (en) * | 2022-05-25 | 2022-09-02 | 十九冶成都建设有限公司 | Method and device for monitoring blockage of pumping concrete conveying pipe |
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