CN101498650B - Five-ganged rock uniaxle rheometer - Google Patents
Five-ganged rock uniaxle rheometer Download PDFInfo
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- CN101498650B CN101498650B CN2009100782332A CN200910078233A CN101498650B CN 101498650 B CN101498650 B CN 101498650B CN 2009100782332 A CN2009100782332 A CN 2009100782332A CN 200910078233 A CN200910078233 A CN 200910078233A CN 101498650 B CN101498650 B CN 101498650B
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Abstract
The invention discloses a five test-piece linkage uniaxial rock rheometer belonging to the technical field of underground engineering experimental apparatus. The five test-piece linkage uniaxial rock rheometer comprises a counterforce framework, a servo loading system, a power system and a data acquisition system. The counterforce framework comprises an upper cross beam, an optical axis, a table board and a pedestal; the servo loading system comprises five sets of loading bodies connected in parallel, and each set of loading body comprises an upper bearing plate, a lower bearing plate, a precision lead screw, a lifter, a servomotor and a test piece installing and clamping ball seat; the power system loads power in an electrical starting way, adopts the UPS technology to prevent deenergization and supplies the servomotor with power; and the data acquisition system comprises a displacement transducer, a force transducer, a wireless network measuring and controlling communication system and a computer. The invention can simultaneously axially control five test pieces with different parameters, keep the axially controlled parameters invariable and remotely control, examine, download and process field test data due to the adoption of the wireless network technology.
Description
Technical field
The present invention relates to a kind of rock and moving uniaxial rheology instrument of concrete 5-linked of being used for, belong to underground works experimental apparatus technical field.
Background technology
The rock rheology is meant rock forming mineral group structure, increases and constantly adjustment reorganization in time, causes its stress, strain regime also to increase in time and constantly and changes.A large amount of engineering practices with studies show that, the destruction of rock mass engineering project and unstability, do not take place immediately after excavation is finished in many cases, but the stress of rock mass will change continuous adjustment in time with distortion, the process of its adjustment often needs to continue long period.Therefore when describing and handle the mechanical deformation characteristic of rock mass medium, not only to consider the instantaneous elastoplastic property of rock mass, but also will pay much attention to the rheological characteristics of rock mass.Five sixties of 20th century, be suggested as global problem from rock mass engineering project rheology problem, and EHLee and Chen Zongji professor [Guo Hui, Guo Bin. consider the finite element analysis of rheological effect rock tunnel. the Sichuan building, 2008,28 (3) .] take the lead in rheology is applied to the Geotechnical Engineering area research.After this, vast researcher both domestic and external has carried out broad research to the rheological characteristics of rock soil mass, inquire into the viewpoint of rheology and resolve and handle the dam foundation, side slope, tunnel and underground works etc. and have various and time related phenomena and problem in the field of important practical value, make the research of rock rheology and application obtain significant progress and many important achievements.
Along with developing rapidly of Chinese large-sized rock mass engineering project building cause, rheol research shows its importance, necessity and ageing more to rock engineering.Yet, soft, the constitutive equation scheduling theory problem of hard rock rheology, the bulking effect problem of soft rock dilatation, definite problem that related parameter is respectively arranged of extruding property rock mass mechanics condition, the rheological properties of rock problem of buried grow up tunnel and soft rock tunnel or the like field is also had a lot of deficiencies both at home and abroad, achievement in research is not grasped the universal law of rheological properties of rock as yet comprehensively.
Shop experiment plays crucial effect to the development of rock mechanical, and more and more scholars begins one's study, also developed in succession some rock soil mass rheological test instrument both at home and abroad in recent years.Yet these test instruments mostly have the following disadvantages: the lotus time of holding that (1) loads can not continue, and can not satisfy the needs of long-time rheological test; (2) load to hold lotus stability not enough; (3) each test only can load single test specimen etc.The present invention is a kind of rheological test instrument that can load 5 test specimens simultaneously, overcome the problem that loading can not be lasting, stable in the existing rheological test, for grow up deep tunnel, soft rock tunnel and salt envelope oil bank isolith rheology characteristics of soil of research China provides new experimental technique, has extremely wide application prospect.
Summary of the invention
The objective of the invention is to be achieved through the following technical solutions.
Five-ganged rock uniaxle rheometer is by reaction frame, servo loading system, and power system and data acquisition system (DAS) four parts are formed:
(1) reaction frame is to be made of entablature 7,6 optical axises 10, table top 12 and pedestals 17,6 optical axis 10 upper and lower sides pass entablature 7 and table top 12 respectively, fixedly connected by clamp nut 6a, 6b, table top 12 is fixedlyed connected with pedestal 17, and its effect provides and loads required counter-force;
(2) servo loading system comprises the carrier that adds of five cover parallel connections, every cover adds carrier by last bearing plate 9, following bearing plate 11, precision lead screw 13, lifter 15, servomotor 16, manual modulation valve 3a, be installed ball seat 14 of 3b and test specimen constitutes, last bearing plate 9 is fixedlyed connected with entablature 7, following bearing plate 11 links to each other with precision lead screw 13 upper ends, precision lead screw 13 lower ends link to each other with lifter 15, and run through table top 12 and flexibly connect with its rotation, lifter 15 links to each other with servomotor 16, manual modulation valve 3a, 3b links to each other with lifter 15, the test specimen ball seat 14 that is installed is positioned at down bearing plate 11 upper surfaces, and its effect is the stability that keeps test specimen;
(3) power system 5 links to each other with servomotor 16, and the starting of working power electricity loads, and provides servomotor 16 required drives, and adopting high-capacity UPS is that the UPS technology prevents outage, power switch 1 control power system switch;
(4) data acquisition system (DAS) is made of displacement transducer 18, force transducer 8, wireless network measurement and control communication device 4 and computing machine 2, link to each other with force transducer 8 above the last bearing plate 9, measuring accuracy is 2.5N, precision lead screw 13 lower ends link to each other with displacement transducer 18, measuring accuracy is 1 μ m, displacement transducer 18, force transducer 8 and computing machine 2 are connected by data line, its effect is the real-time displacement and the axial force of record test specimen, wireless network measurement and control communication device 4 and computing machine 2 are connected by data line, can long-rangely check field test data;
The invention has the beneficial effects as follows:
1. the test of five test specimens that simultaneously axially controlled variable is different.
2. constant maintenance servocontrol of unpowered electricity and detection automatically not only realize the rheological test of the permanent time of real meaning, and save the energy greatly.
3. axial loading system employing leading screw, frequency control motor and high-capacity UPS are the UPS technology, make axial control parameter value keep constant under long-time unpowered electric situation.
4. adopt radio network technique, can be at the scene outer remote control at any time, check, download and handle field test data.
Description of drawings
Fig. 1 is a five-ganged rock uniaxle rheometer structural representation of the present invention.
Accompanying drawing sign: 1-power switch; The 2-computing machine; 3a, 3b-manual modulation valve; 4-wireless network measurement and control communication device; The 5-power system; 6a, 6b-clamp nut; The 7-entablature; The 8-force transducer; The last bearing plate of 9-; The 10-optical axis; Bearing plate under the 11-; The 12-table top; The 13-precision lead screw; The 14-test specimen ball seat that is installed; The 15-lifter; The 16-servomotor; The 17-pedestal; The 18-displacement transducer.
Embodiment
Below in conjunction with the drawings and specific embodiments invention is described further.
As shown in Figure 1, the moving uniaxial rheology instrument of 5-linked of the present invention is by reaction frame, servo loading system, and power system and data acquisition system (DAS) four parts are formed.
(1) reaction frame is to be made of entablature 7, optical axis 10, table top 12 and pedestal 17,6 optical axis 10 upper and lower sides pass entablature 7 and table top 12 respectively, fixedly connected by clamp nut 6a, 6b, table top 12 is fixedlyed connected with pedestal 17, and its effect provides and loads required counter-force.
(2) servo loading system comprises the carrier that adds of five cover parallel connections, every cover adds carrier by last bearing plate 9, following bearing plate 11, precision lead screw 13, lifter 15, servomotor 16, manual modulation valve 3a, be installed ball seat 14 of 3b and test specimen constitutes, last bearing plate 9 is fixedlyed connected with entablature 7, following bearing plate 11 links to each other with precision lead screw 13 upper ends, precision lead screw 13 lower ends link to each other with lifter 15, and run through table top 12 and flexibly connect with its rotation, lifter 15 links to each other with servomotor 16, manual modulation valve 3a, 3b links to each other with lifter 15, and the test specimen ball seat 14 that is installed is positioned at down bearing plate 11 upper surfaces.
(3) power system 5 links to each other with servomotor 16, and the starting of working power electricity loads, and provides servomotor 16 required drives, and adopting high-capacity UPS is that the UPS technology prevents outage, power switch 1 control power system switch.
(4) data acquisition system (DAS) is made of displacement transducer 18, force transducer 8, wireless network measurement and control communication device 4 and computing machine 2, link to each other with force transducer 8 above the last bearing plate 9, precision lead screw 13 lower ends link to each other with displacement transducer 18, and displacement transducer 18, force transducer 8, wireless network measurement and control communication device 4 and computing machine 2 are connected by data line.
Test concrete operations mode of the present invention is described below:
1, preliminary work before the test: preparing experiment ground test specimen, model prepare auxiliary material such as instrument, various sensing original papers, and whether each parts of check test instrument are normal;
2, operation Loading Control program: before on-test, running test software, the starting characteristics test instrument, software control is divided into five independently control system, can do the test of five test specimens according to demand simultaneously, also can do experiment with one of them system, software is one to one to five systems, at first will test the power zero clearing behind the operating software, displacement zero clearing, distortion zero clearing;
3, test specimen is installed: will prepare standard specimen before test, test specimen is placed on down the center of loading plate 11, after test specimen installs, adjust time bearing plate 11 positions by manual modulation valve 3a, 3b test specimen is contacted with last bearing plate 9;
4, precision checking: select to want the sensor of verification during verification, open the verification interface, will begin verification after the data zero clearing, when sensor arrives verification power, the automatic typing checklist of sensor output value, and entering next checkpoint, general 5 points of verification are closed after finishing;
5, parameter input: test specimen is imported the parameters such as specification of sample all set: basic parameter, controlled variable, checking data, and input finishes and closes this interface, and the test figure in the process of the test is preserved automatically;
6, test specimen loads: select control mode, be generally displacement control, determine rate of loading.It is the UPS technology that axial loading system adopts precision lead screw, servomotor and high-capacity UPS, makes axial control parameter value keep constant under long-time unpowered electric situation;
7, data processing: test figure is stored in the electrical form mode and is called, can be the coordinate graphing with axial force, axial strain, axial displacement and any two parameters in effective time, to the test findings tracing analysis, adopt radio network technique, on-the-spot outer remote control at any time, check, download and handle field test data;
8, five loading system operations are in full accord, same step operation other system.The test of the present invention's five test specimens that simultaneously axially controlled variable is different.
Claims (4)
1. a five-ganged rock uniaxle rheometer is by reaction frame, servo loading system, and power system and data acquisition system (DAS) four parts are formed, and it is characterized in that:
(1) reaction frame is made of entablature [7], 6 optical axises [10], table top [12] and pedestal [17], 6 optical axises [10] upper and lower side passes entablature [7] and table top [12] respectively, [6a, 6b] is fixedly connected by clamp nut, and table top [12] is fixedlyed connected with pedestal [17];
(2) servo loading system comprises the carrier that adds of five cover parallel connections, every cover adds carrier by last bearing plate [9], following bearing plate [11], precision lead screw [13], lifter [15], servomotor [16], manual modulation valve [3a, 3b] and the test specimen ball seat [14] that is installed constitute, last bearing plate [9] is fixedlyed connected with entablature [7], following bearing plate [11] links to each other with precision lead screw [13] upper end, precision lead screw [13] lower end links to each other with lifter [15], precision lead screw [13] runs through table top [12] and rotates flexible connection with lifter [15], lifter [15] links to each other with servomotor [16], manual modulation valve [3a, 3b] link to each other with lifter [15], the test specimen ball seat [14] that is installed is positioned at down bearing plate [11] upper surface;
(3) power system [5] links to each other with servomotor [16], and the starting of working power electricity loads, and servomotor [16] required drive is provided, and adopting high-capacity UPS is that the UPS technology prevents outage, power switch [1] control power system switch;
(4) data acquisition system (DAS) is made of displacement transducer [18], force transducer [8], wireless network measurement and control communication device [4] and computing machine [2], link to each other with force transducer [8] above the last bearing plate [9], precision lead screw [13] lower end links to each other with displacement transducer [18], and displacement transducer [18], force transducer [8] and wireless network measurement and control communication device [4] are connected by data line with computing machine [2] respectively.
2. a kind of 5-linked according to claim 1 is moved the uniaxial rheology instrument, it is characterized in that: described reaction frame is for servo loading system provides counter-force, keeps the degree of stability of instrument.
3. a kind of 5-linked according to claim 1 is moved the uniaxial rheology instrument, it is characterized in that: the experiment of described servo loading system five test specimens that simultaneously axially controlled variable is different can add carrier with wherein a cover or a few cover and test.
4. a kind of 5-linked according to claim 1 is moved the uniaxial rheology instrument, it is characterized in that: described displacement transducer [18], force transducer [8] are to link to each other with computing machine [2] by data line, the real-time displacement of record test specimen and axle power, wireless network measurement and control communication device [4] is connected by data line with computing machine [2], can long-rangely check field test data.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
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| CN2009100782332A CN101498650B (en) | 2009-02-23 | 2009-02-23 | Five-ganged rock uniaxle rheometer |
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| Application Number | Priority Date | Filing Date | Title |
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| CN2009100782332A CN101498650B (en) | 2009-02-23 | 2009-02-23 | Five-ganged rock uniaxle rheometer |
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| Publication Number | Publication Date |
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| CN101498650A CN101498650A (en) | 2009-08-05 |
| CN101498650B true CN101498650B (en) | 2010-12-15 |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN102393354B (en) * | 2011-10-20 | 2014-06-25 | 上海交通大学 | Intelligent soil engineering shear rheometer |
| CN109540676B (en) * | 2019-01-05 | 2023-12-12 | 北京交通大学 | Soft rock uniaxial creep gauge adopting servo loading and mechanical voltage stabilization |
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