CN203785700U - Oversized concrete floor construction period temperature and contraction monitoring device - Google Patents
Oversized concrete floor construction period temperature and contraction monitoring device Download PDFInfo
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- CN203785700U CN203785700U CN201420100444.8U CN201420100444U CN203785700U CN 203785700 U CN203785700 U CN 203785700U CN 201420100444 U CN201420100444 U CN 201420100444U CN 203785700 U CN203785700 U CN 203785700U
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Abstract
The utility model discloses an oversized concrete floor construction period temperature and contraction monitoring device. The monitoring device aims to overcome problems that the conventional concrete structure detection device has information delay. The monitoring device comprises a temperature sensor, a data collection device, a data storage device, a data transmission device, a power supply, a central processing unit, a concrete strain gauge, a concrete temperature test element, a steel bar stress detector and a steel bar strain test element. The monitoring device has the characteristics of being accurate and timely in data collection, high in environment applicability and low in implementation cost.
Description
Technical field
The utility model relates to concrete and measures or field tests.
Background technology
Current, China is in large-scale infrastructure construction period, and xoncrete structure, as the most general version of a kind of application, is widely used in the construction of all kinds of engineering structures, so the reliable problem of xoncrete structure is paid close attention to always widely.Monitoring structural health conditions can be found in time the damage of structure, and then to user, be made the technology of safe early warning by obtaining the relevant information of structure as a kind of, is one of study hotspot of field of civil engineering in recent years.Yet, traditional xoncrete structure nondestructiving detecting means is (as ultrasonic pulse method, rebound method etc.), by the related physical quantity of direct measurement structure, although can realize rapidly the detection to structure partial damage, but as local off-line type detection method, conventionally when there is external presentation in structural damage, people just can go the concrete condition of detection architecture local damage, even if regularly carry out the detection of structure partial damage, also cannot guarantee to detect in time structure partial degree of impairment, just there is the hysteresis quality of information in this, cannot realize " diagnosing structural damage and the health monitoring " of real real-time online.
Utility model content
Technical problem to be solved in the utility model is to provide a kind of larger area ground concrete construction time temperature and shrinks monitoring device, has the problem of information delay to solve conventional concrete structure detection device.
In order to solve the problems of the technologies described above, the utility model provides a kind of larger area ground concrete construction time temperature and shrinks monitoring device, comprise reinforcement stresses meter: be embedded in inside concrete, be connected with reinforcing bar, described reinforcement stresses meter parallel construction stress direction is installed, for obtaining the stress information of burying position reinforcing bar underground; Concrete strain gauge: be embedded in inside concrete, for obtaining strain information and the temperature information of burying position underground; With data collector: with reinforcement stresses meter, concrete strain gauge communication, obtain and resolve sensor sequence that testing element sends number and current temperature information; Data storage device: for the integrated information of storage of collected, described integrated information comprises acquisition time, sensor sequence number, temperature value, stress value; Data transmission device: for the integrated information of storage is sent to PC workstation, enter central server; CPU (central processing unit): be connected with described data collector, data storage device and data transmission device, for data processing; Power supply: be responsible for to all power unit power supplies of described device.
Adopt the larger area ground concrete construction time temperature of said structure and shrink monitoring device, its advantage is: the data that basis records in observation process, analyze reinforcing bar and concrete stressed and restraint condition, if find there is sudden change or occur abnormal in temperature or strain, maintenance measure be should adjust in time, the number of plies of gunnysack or the frequency of increase watering etc. as increased, covered; The maintenance of instructing by field monitoring, realizes concrete dynamic maintenance; The utility model can be used to meet temperature and the stress-strain data collection of overlarge area concrete construction phase, has the features such as data acquisition is accurate, timely, flexible operation, ambient adaptability is strong, implementation cost is low.
Further, also comprise display device: be connected with described CPU (central processing unit), for showing in real time the state of harvester, comprise the testing element number of current time, connection, thermograph number, acquisition state, the power supply status of accumulative total storage, be convenient to intuitively embody system running state.
Further, the layout of reinforcement stresses meter take that to select a reinforcing bar of selected concreting plane symmetry axis be tested object, and reinforcement stresses meter should be with former reinforcing bar in identical stress after replacing reinforcing bar.
Further, the layout of concrete strain gauge be take half bar axis of the selected concreting planimetric map axis of symmetry (should choose the longer axis of symmetry to rectangle) as temperature measuring area, and in temperature measuring area, temperature test element is floor plan.
Accompanying drawing explanation
Fig. 1 is the utility model larger area ground concrete construction time temperature and the theory diagram that shrinks monitoring device embodiment.
Embodiment
Below in conjunction with drawings and Examples, technical solutions of the utility model are described in further detail:
As shown in Figure 1, the larger area ground concrete construction time temperature of a kind of embodiment of the utility model and contraction monitoring device, comprise the digital reinforcement stresses meter of ZX-400 string formula: be embedded in inside concrete, be connected with reinforcing bar, at concrete slab length direction, select an elongated reinforcing bar of top mat as reinforcement stresses monitoring target, the digital reinforcement stresses meter of ZX-400 string formula parallel construction stress direction is installed, at the corresponding reinforcing bar of the digital reinforcement stresses meter length of the sawed-off ZX-400 string of measuring point position formula, then the digital reinforcement stresses meter of ZX-400 string formula two ends are welded on structure reinforcing bars, the fixing ZX-400 string formula number reinforcement stresses meter of first spot welding during welding, at Nodes, implement to tie up bar weldering, for obtaining the stress information of burying position reinforcing bar underground, in welding process, should be partly that the digital reinforcement stresses meter of ZX-400 string formula interlude is immersed in water by the digital reinforcement stresses flowmeter sensor of ZX-400 string formula, in order to avoid cross the digital reinforcement stresses meter of cause thermal damage ZX-400 string formula, test lead is drawn along structure reinforcing bars, taseometer and test lead should be avoided concrete vibrating direction, with without vibration constantly taseometer direction change or test lead damaged,
The digital strainometer of JMZX-215 type flush type intelligence string formula: be embedded in inside concrete, for obtaining strain information and the temperature information of burying position underground; The parallel concrete slab length direction of the digital strainometer of JMZX-215 type flush type intelligence string formula is installed, adopt thin circle silk to be bundled on the top bars of concrete slab, the position that thin circle wire bundle is tied up should be inside the stressed handle of the JMZX-215 type flush type intelligence digital strainometer of string formula 5mm place, test lead is drawn along concrete reinforcement, and colligation is good, wherein, the digital strainometer of JMZX-215 type flush type intelligence string formula should be bundled in side, structure reinforcing bars bottom with test lead, strainometer direction change or by strainometer and harness damage during with without vibration;
OLP-9205 PCI 40MSPS 12Bit 2Ch high-speed, high precision parallel data acquisition device: with the digital reinforcement stresses meter of ZX-400 string formula, the digital strainometer communication of JMZX-215 type flush type intelligence string formula, obtain and resolve sensor sequence that the digital reinforcement stresses meter of ZX-400 string formula, the digital strainometer of JMZX-215 type flush type intelligence string formula send number and current temperature information;
West Digital WD5000AAKX hard disk: for the integrated information of storage of collected, described integrated information comprises acquisition time, sensor sequence number, temperature value, stress value;
APC200A-43 device: for the integrated information of storage is sent to PC workstation, enter central server;
ZMZX-2001 type multi-purpose computer detector: be connected with described data collector, data storage device and data transmission device, for data processing;
Power supply: be responsible for to all power unit power supplies of described device.
Also comprise LED display: be connected with described ZMZX-2001 type multi-purpose computer detector, for showing in real time the state of harvester, comprise the testing element number of current time, connection, thermograph number, acquisition state, the power supply status of accumulative total storage;
When tested structure concrete produces strain or inner reinforcing bar and meets with stresses, the digital strainometer of JMZX-215 type flush type intelligence string formula and the digital reinforcement stresses meter of ZX-400 string formula are frequency signal by strain or stress transmission, ZMZX-2001 type multi-purpose computer detector is measured after frequency, according to mathematical models automatically calculate strain and stress, and directly calculate strain stress numeral and show by LED display; The digital strainometer built-in temperature sensor of JMZX-215 type flush type intelligence string formula can directly be measured measuring point temperature simultaneously, and to voluntarily strain value being carried out to temperature correction; In observation process, according to the data that record, analysis reinforcing bar and concrete stressed and restraint condition, extremely, should adjust maintenance measure in time if discovery temperature or strain occur suddenling change or occur, as increase covers the number of plies of gunnysack or the frequency of increase watering etc.; The maintenance of instructing by field monitoring, realizes concrete dynamic maintenance.
Also comprise dial gauge, before dial gauge is installed, dial gauge indicator contact position on pillar as fixed point is removed to floating dust and weak floor, at the dial gauge position concrete surface of layouting, clean out and moistening, with the steel plate of a 100mm * 100mm * 10mm of grout bonding, after a few hours, bonding was firm, dial gauge magnetic bases are adsorbed on steel plate, contact is against the position after processing on pillar, records dial gauge initial reading after adjustment;
Test measuring point is arranged and should be determined according to the concrete conditions such as thickness of the planar dimension of engineering mattess, geometric figure, structure, take and can truly reflect that reinforcement stresses strain and concrete temperature and strain variation situation are principle, generally can arrange by following principle:
1) layout of concrete temperature and pressure detection point be take half bar axis of the selected concreting planimetric map axis of symmetry and (to rectangle, should be chosen the longer axis of symmetry) as temperature measuring area, and in temperature measuring area, temperature point is floor plan.
2) layout of reinforcement stresses and strain measuring point take that to select a reinforcing bar of selected concreting plane symmetry axis be tested object, and reinforcement stresses strain testing element should be with former reinforcing bar in identical stress after replacing reinforcing bar.
3), in concrete test district, the position of temperature and strain monitoring and quantity can be determined according to the requirement of the distribution situation in temperature field in concreting block and the control of strain.
4) on the concrete ground facial plane half bar axis of symmetry, the some position of the measuring point of concrete and reinforcing bar all should be no less than 5 points, and along Massive Concrete Blocks body thickness direction, concrete temperature and strain measuring point quantity should be no less than 2 points.
5) concrete surface temperature, should be as the criterion with the temperature in concrete surface 50～100mm, and concrete surface stress should be as the criterion with the stress in the 50～100mm of surface, and concrete penetrability Crack Control stress should be as the criterion with the center stress of concrete thickness.
Concrete temperature variation is a relative long-term process with creep and shrinkage, construction period concrete temperature strain and the ess-strain monitoring of reinforcing bar be also a relative longer process, the in the situation that of structure construction conditions permit, should monitor as far as possible for a long time, and monitoring time must not be less than 45 days.In observation process, larger for test initial stage concrete temperature and strain variation, mid-term slowly feature relative to later stage variation tendency, test job early stage survey read interval time should be less than mid-term and later stage.Generally can click principle and arrange test plan:
1) 1～3 day every 4h surveys and reads once;
2) 3～14 days every 6h survey and read once, and later every 12h surveys and reads once;
3) if chance temperature jump or excess Temperature should record once.
The object of the monitoring of larger area ground concrete structural concrete temperature strain and reinforcement stresses strain is to understand in time concrete STRESS VARIATION situation on the one hand, to adjust in time construction and maintenance measure, crack preventing is carried out.By analysis, sum up concrete temperature stress Changing Pattern on the other hand, to instruct later larger area ground concrete structural design and construction, be mainly manifested in:
1) the monitored concrete plate construction stage early, mid-term the temperature difference the rule of development, to adjust in time maintenance measure, guarantee that harmful cracks does not appear in concrete;
2) obtain the Strain Distribution situation of test section plate, and the curve that changes with practice of strain, thereby whether analyze the contraction of entire plate even, possibility cracking;
3), by temperature, stress, the strain of test, analyze the restraint state of concrete slab, to instruct the design and construction of larger area ground concrete;
4) by the Data Comparison recording in the calculated results and Practical Project, the reliability that checking larger area ground concrete structural theory is calculated.
Below described is by reference to the accompanying drawings only preferred implementation of the present utility model; but the utility model is not limited to above-mentioned embodiment; should be understood that; for a person skilled in the art; do not departing under the prerequisite of the utility model structure; can also make various distortion and improvement, these also should be considered as protection domain of the present utility model, and these can not affect effect and practical applicability that the utility model is implemented.
Claims (4)
1. larger area ground concrete construction time temperature and shrink monitoring device, it is characterized in that, comprise reinforcement stresses meter: be embedded in inside concrete, be connected with reinforcing bar, described reinforcement stresses meter parallel construction stress direction is installed, for obtaining the stress information of burying position reinforcing bar underground; Concrete strain gauge: be embedded in inside concrete, for obtaining strain information and the temperature information of burying position underground; Data collector: with reinforcement stresses meter, concrete strain gauge communication, obtain and resolve sensor sequence that testing element sends number and current temperature information; Data storage device: for the integrated information of storage of collected, described integrated information comprises acquisition time, sensor sequence number, temperature value, stress value; Data transmission device: for the integrated information of storage is sent to PC workstation, enter central server; CPU (central processing unit): be connected with described data collector, data storage device and data transmission device, for data processing; Power supply: be responsible for to all power unit power supplies of described device.
2. larger area ground concrete construction time temperature according to claim 1 and shrink monitoring device, it is characterized in that, also comprise display device: be connected with described CPU (central processing unit), for showing in real time the state of harvester, comprise the testing element number of current time, connection, data acknowledgment number, acquisition state, the power supply status of accumulative total storage.
3. larger area ground concrete construction time temperature according to claim 1 and shrink monitoring device, it is characterized in that, the layout of reinforcement stresses meter take that to select a reinforcing bar of selected concreting plane symmetry axis be tested object, and reinforcement stresses meter should be with former reinforcing bar in identical stress after replacing reinforcing bar.
4. larger area ground concrete construction time temperature according to claim 1 and shrink monitoring device, it is characterized in that, the layout of concrete strain gauge be take half bar axis of the selected concreting planimetric map axis of symmetry (should choose the longer axis of symmetry to rectangle) as temperature measuring area, and in temperature measuring area, temperature test element is floor plan.
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| Application Number | Priority Date | Filing Date | Title |
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| CN201420100444.8U CN203785700U (en) | 2014-03-06 | 2014-03-06 | Oversized concrete floor construction period temperature and contraction monitoring device |
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| CN201420100444.8U CN203785700U (en) | 2014-03-06 | 2014-03-06 | Oversized concrete floor construction period temperature and contraction monitoring device |
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Cited By (10)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104864840A (en) * | 2015-06-14 | 2015-08-26 | 安徽圣力达电器有限公司 | Novel embedded strain meter |
| CN105159267A (en) * | 2015-09-28 | 2015-12-16 | 南阳中衡智能科技有限公司 | Foam concrete quality remote real time monitoring authentication system |
| CN105807339A (en) * | 2016-04-29 | 2016-07-27 | 华能澜沧江水电股份有限公司 | Alarming device and method for microclimate environment of roller-compacted concrete lift surface |
| CN106524989A (en) * | 2016-12-14 | 2017-03-22 | 上海建工建集团有限公司 | Large-scale foundation pit support body deformation automation analysis system and data analysis method thereof |
| CN107268856A (en) * | 2017-06-15 | 2017-10-20 | 江苏师范大学 | Controllable discharges the device and construction method of Overlong Concrete Structure temperature and shrinkage stress |
| CN109459163A (en) * | 2018-12-18 | 2019-03-12 | 中交第二航务工程勘察设计院有限公司 | A kind of temperature stress monitoring device of road surface structare layer |
| CN112414461A (en) * | 2020-11-11 | 2021-02-26 | 长沙理工大学 | Measurement system for dynamic mechanical response of intelligent acquisition concrete surface layer |
| CN112903019A (en) * | 2021-01-27 | 2021-06-04 | 中国电建集团铁路建设有限公司 | Monitoring and repairing characterization method for self-repairing concrete engineering cracks |
| CN113447067A (en) * | 2021-02-05 | 2021-09-28 | 中交第三公路工程局有限公司 | Monitoring method of construction monitoring system of reinforced concrete combined section |
| CN114061668A (en) * | 2021-11-22 | 2022-02-18 | 汇通建设集团股份有限公司 | Prefabricated pier temperature stress system |
-
2014
- 2014-03-06 CN CN201420100444.8U patent/CN203785700U/en not_active Expired - Fee Related
Cited By (13)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104864840A (en) * | 2015-06-14 | 2015-08-26 | 安徽圣力达电器有限公司 | Novel embedded strain meter |
| CN105159267A (en) * | 2015-09-28 | 2015-12-16 | 南阳中衡智能科技有限公司 | Foam concrete quality remote real time monitoring authentication system |
| CN105807339A (en) * | 2016-04-29 | 2016-07-27 | 华能澜沧江水电股份有限公司 | Alarming device and method for microclimate environment of roller-compacted concrete lift surface |
| CN106524989A (en) * | 2016-12-14 | 2017-03-22 | 上海建工建集团有限公司 | Large-scale foundation pit support body deformation automation analysis system and data analysis method thereof |
| CN107268856A (en) * | 2017-06-15 | 2017-10-20 | 江苏师范大学 | Controllable discharges the device and construction method of Overlong Concrete Structure temperature and shrinkage stress |
| CN109459163B (en) * | 2018-12-18 | 2023-09-29 | 中交第二航务工程勘察设计院有限公司 | Temperature stress monitoring device for pavement structural layer |
| CN109459163A (en) * | 2018-12-18 | 2019-03-12 | 中交第二航务工程勘察设计院有限公司 | A kind of temperature stress monitoring device of road surface structare layer |
| CN112414461A (en) * | 2020-11-11 | 2021-02-26 | 长沙理工大学 | Measurement system for dynamic mechanical response of intelligent acquisition concrete surface layer |
| CN112414461B (en) * | 2020-11-11 | 2022-10-04 | 长沙理工大学 | Measurement system for dynamic mechanical response of intelligent acquisition concrete surface course |
| CN112903019A (en) * | 2021-01-27 | 2021-06-04 | 中国电建集团铁路建设有限公司 | Monitoring and repairing characterization method for self-repairing concrete engineering cracks |
| CN113447067A (en) * | 2021-02-05 | 2021-09-28 | 中交第三公路工程局有限公司 | Monitoring method of construction monitoring system of reinforced concrete combined section |
| CN114061668A (en) * | 2021-11-22 | 2022-02-18 | 汇通建设集团股份有限公司 | Prefabricated pier temperature stress system |
| CN114061668B (en) * | 2021-11-22 | 2024-04-02 | 汇通建设集团股份有限公司 | Prefabricated pier temperature stress system |
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| CF01 | Termination of patent right due to non-payment of annual fee | ||
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Granted publication date: 20140820 Termination date: 20160306 |