CN201000411Y - Static force loading device for tool type concrete beam - Google Patents
Static force loading device for tool type concrete beam Download PDFInfo
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- CN201000411Y CN201000411Y CNU2006200457450U CN200620045745U CN201000411Y CN 201000411 Y CN201000411 Y CN 201000411Y CN U2006200457450 U CNU2006200457450 U CN U2006200457450U CN 200620045745 U CN200620045745 U CN 200620045745U CN 201000411 Y CN201000411 Y CN 201000411Y
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Abstract
The utility model relates to a tool type concrete beam static force loading device, which belongs to a civil engineering field. The loading device is mainly used for long-term loading test of the concrete beam, and can be used to reinforce the strengthening beam and to operate the loading test to imitate the work condition in the practical engineering on the premise of keeping the vertical load constant. The utility model comprises a counter force frame at the bottom and a loading pull rod, wherein the counter force frame comprises two channel steels, a reinforcing rib and a gusset plate, a round rod supporting seat, a concrete beam test piece, a round rod, an allocation beam, a steel backing plate and a nut are arranged on the counter force frame from bottom to top; one end of the pull rod with a force gauge is positioned on the bottom steel beam, the other end with a screw thread and a nut is screwed above thereof. Because the loading device belongs to a self-balancing loading system, the loading device has the advantages of simple structure, small floor area, reusable and removable, convenient charge control, accurate and reliable data detecting, fully meeting the charge requirements of the long-term under stress performance test of the concrete beam and the short-term load-holding reinforce test.
Description
Technical field
The utility model belongs to field of civil engineering, is specifically related to a kind of beams of concrete static(al) load testing machine.
Background technology
Development along with urban construction, the fundamental construction of China has entered the newly-built stage of developing simultaneously with the transformation maintenance, understanding the long-term stress performance of concrete component has become one of key content of Structural Engineering research at present, is one of effective technical means comparatively wherein and beams of concrete is carried out long-term static(al) load test.At present long-term static(al) load testing machine adopts stacking weight methods such as (sack cement, fragment of brick or water) to load mostly, so the load metering is inaccurate and can not carry out the overall process failure test.Because to add loading weight big, so test specimen and charger take up an area of greatlyyer, loads the back and move very inconveniently, certainly will reduce the utilization factor in place, laboratory like this, and this also is test of long duration the number of components one of the main reasons on the low side.
The utility model content
The purpose of this utility model is: for the long-term stress performance test of flexural member provides a kind of simple and practical tool-type beams of concrete static(al) loading system.
For achieving the above object, solution of the present utility model is:
Tool-type beams of concrete static(al) charger, wherein: comprise the bottom reaction frame and load pull bar, reaction frame comprises two channel-section steels, ribbed stiffener and batten plates, is provided with round steel bearing, beams of concrete test specimen, round steel, distribution beam, billet, nut on the reaction frame from the bottom to top; Pull bar one end of band dynamometer is fixed in the bottom girder steel, and the other end is threaded, and nut revolves thereon.
Tool-type beams of concrete static(al) charger as described, wherein: dynamometry is counted the type vibration wire reinforcement tensiometer.
Aforesaid tool-type beams of concrete static(al) charger, wherein: can establish lifting jack on the billet of reaction frame top, align with billet in the lifting jack lower end, on the lifting jack laboratory reaction frame for loading should be set.
Aforesaid tool-type beams of concrete static(al) charger, wherein: the channel-section steel of reaction frame is provided with suspension ring.
This tool-type beams of concrete static(al) charger, utilize the long-term loading of the loading pull bar realization of steel reaction frame and band force cell to beams of concrete, type vibration wire reinforcement tensiometer control static(al) loaded value is with control beams of concrete test loaded value in the utilization loading pull bar, the vertical afterburning maximum of a pair of pull bar can reach 80kN, and it is required to satisfy test to utilize distribution beam can adjust the load(ing) point position flexibly.Being used common hydraulic jack can realize beams of concrete until the overall process load test of destroying.
Tool-type beams of concrete static(al) charger is made up of bottom reaction frame and loading pull bar.The reaction frame base is welded by two channel-section steels, ribbed stiffener and batten plates, and for ease of lifting and mobile test specimen position, the channel-section steel two ends are welded with suspension ring.Under the beams of concrete (test specimen) the round steel bearing is set, the round steel diameter should be greater than test beam span centre maximum defluxion.Long-term static(al) loads the reinforcing pull rod that adopts band type vibration wire reinforcement tensiometer, pull bar one end uses bolted on the reaction frame of bottom, the other end is threaded, the fastening counter-force that utilization screws the nut generation of pull bar upper end makes top billet pressurized, and billet then is applied to vertical concentrated force on the concrete sample by distribution beam and loading round steel.Read type vibration wire reinforcement tensiometer frequency by survey and can understand loading force numerical value, utilize the rotatable nut of active tool spanner until the value of thrust of demarcating, so just flexibly the control loaded vertical force to testing setting value.Stable for guaranteeing long-term loading, answer periodic observation dynamometer reading in the test, in time adjust value of thrust.
This device can utilize reaction frame and load pull bar and realize the long-term static(al) loading of beams of concrete and the experimental study of holding reinforcement under the lotus condition, charger is simple in structure, floor area is little, reusable and removable, Loading Control is convenient, detect data accurately and reliably, can satisfy long-term stress performance test of beams of concrete and short-term and hold of the requirement of lotus reinforcement experiment, for long-term stress performance of flexural member and the experimental study of holding reinforcement under the lotus condition provide a kind of simple and practical static(al) loading method loading system.
Description of drawings
Fig. 1 is a beams of concrete static(al) charger system diagram;
Fig. 2 is a beams of concrete static(al) loading system side view;
Fig. 3 is that static(al) loads the pull bar detail drawing;
Fig. 4 is overall process charger figure.
Embodiment
See also Fig. 1～4, a kind of tool-type beams of concrete static(al) charger, utilize the long-term loading of loading pull bar 28 realizations of steel reaction frame 10 and band force cell 13 to beams of concrete 6, a pair of pull bar 28 vertical afterburning maximums can reach 80kN, and it is required to satisfy test to utilize loading to distribute girder steel 4 can adjust the load(ing) point position flexibly.Being used common hydraulic jack 22 can realize beams of concrete 6 until the overall process load test of destroying.
Tool-type beams of concrete static(al) charger is made up of bottom reaction frame 10 and loading pull bar 28.Reaction frame 10 bases are welded by two channel-section steels 7, ribbed stiffener 11 and batten plate 12, and for ease of lifting and mobile test specimen position, the channel-section steel two ends are welded with suspension ring 8.Beams of concrete (test specimen) is provided with round steel bearing 96 times, and round steel 5 diameters should be greater than test beam span centre maximum defluxion.Long-term static(al) loads the reinforcing pull rod 28 that adopts band type vibration wire reinforcement tensiometer 13, pull bar one end 14 adopts a pair of nut 15 (comprising pad) and bottom channel-section steel 7 fastening, the other end 1 is threaded, utilization screws the fastening counter-force that pull bar upper end nut 2 produces and makes top billet 3 pressurizeds, and 3 of billets are by distribution beam 4 and load round steel 5 vertical concentrated force is applied on the concrete sample 6.Read type vibration wire reinforcement tensiometer 13 frequencies by survey and can understand loading force numerical value, utilize the rotatable nut of active tool spanner until the value of thrust of demarcating, so just flexibly the control loaded vertical force to testing setting value.Stable for guaranteeing long-term loading, answer periodic observation dynamometer reading in the test, in time adjust value of thrust.
This device can utilize reaction frame 10 and load pull bar 28 and realize to the long-term static(al) loading of beams of concrete 6 and the experimental study of holding reinforcement under the lotus condition, for long-term stress performance of flexural member and the experimental study of holding reinforcement under the lotus condition provide a kind of simple and practical static(al) loading method.
In order to carry out long-term static(al) load test, the utility model can use according to the following step stage by stage according to test objective:
1. long-term static(al) load test
(1) according to concrete sample 6 sizes and Fig. 1 Design and Machining reaction frame 10 and loading pull bar 28;
(2) utilize the string sonometer to measure type vibration wire reinforcement tensiometer 13 initial readings;
(3) be installed to concrete sample 6 on the reaction frame 10 and other test units of Installation and Debugging;
(4) utilize tool wrench rotation nut 2 to arrive and set the pulling force setting value until type vibration wire reinforcement tensiometer 13 readings;
(5) periodic observation dynamometer 13 readings.If reading changes, rotatable nut is adjusted value of thrust.
2. overall process load test
(1) overall process load test reaction frame 21 and hydraulic jack 22 are installed in the laboratory;
(2) test specimen 6 and tool-type beams of concrete static(al) charger are lifted the laboratory assigned address, (Fig. 4) should align with reaction frame top billet 3 in hydraulic jack 22 lower ends;
(3) utilize hydraulic jack 22 to apply vertical load step by step and be returned to initial reading until long-term static(al) loading pull bar 28 complete discharges, dynamometer 13 readings;
(4) utilizing hydraulic jack to continue to apply vertical load destroys until beams of concrete.
In order to simulate actual strengthening construction situation, the utility model can kept under the constant condition of vertical load, finishes the test loading tasks of reinforcement according to Fig. 4 and the following step:
(1) according to concrete sample size and Fig. 1 Design and Machining reaction frame 10 and loading pull bar 28;
(2) utilize the string sonometer to measure type vibration wire reinforcement tensiometer 13 initial readings;
(3) be installed to unguyed concrete sample 6 on the reaction frame 10 and other test units of Installation and Debugging (Fig. 4);
(4) utilize tool wrench rotation nut 2 to arrive and set value of thrust until type vibration wire reinforcement tensiometer 13 readings;
(5) it is constant to keep vertical load (pulling force), carries out the strengthening construction of beams of concrete;
(6) utilize hydraulic jack 22 to apply vertical load step by step and be returned to initial reading until loading pull bar 28 complete discharges, dynamometer 13 readings;
(7) utilizing hydraulic jack 22 to continue to apply vertical load destroys until reinforcement.
The above-mentioned description to embodiment is can understand and use the utility model for ease of those skilled in the art.The person skilled in the art obviously can easily make various modifications to these embodiment, and needn't pass through performing creative labour being applied in the General Principle of this explanation among other embodiment.Therefore, the utility model is not limited to the foregoing description, and those skilled in the art should be within protection domain of the present utility model for improvement and modification that the utility model is made according to announcement of the present utility model.
Claims (4)
1, tool-type beams of concrete static(al) charger, it is characterized in that: comprise the bottom reaction frame and load pull bar, reaction frame comprises two channel-section steels, ribbed stiffener and batten plates, is provided with round steel bearing, beams of concrete test specimen, round steel, distribution beam, billet, nut on the reaction frame from the bottom to top; Pull bar one end of band dynamometer is fixed in the bottom girder steel, and the other end is threaded, and nut revolves thereon.
2, tool-type beams of concrete static(al) charger according to claim 1, it is characterized in that: dynamometry is counted the type vibration wire reinforcement tensiometer.
3, tool-type beams of concrete static(al) charger according to claim 1, it is characterized in that: can establish lifting jack on the billet of reaction frame top, align with billet in the lifting jack lower end, on the lifting jack laboratory reaction frame for loading should be set.
4, tool-type beams of concrete static(al) charger according to claim 1, it is characterized in that: the channel-section steel of reaction frame is provided with suspension ring.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNU2006200457450U CN201000411Y (en) | 2006-09-13 | 2006-09-13 | Static force loading device for tool type concrete beam |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNU2006200457450U CN201000411Y (en) | 2006-09-13 | 2006-09-13 | Static force loading device for tool type concrete beam |
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| CN201000411Y true CN201000411Y (en) | 2008-01-02 |
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| CNU2006200457450U Expired - Fee Related CN201000411Y (en) | 2006-09-13 | 2006-09-13 | Static force loading device for tool type concrete beam |
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| CN101315321B (en) * | 2008-07-07 | 2010-11-03 | 徐州工程学院 | Test method for accurately simulating bond-slip property of male pin in tensile area |
| CN101650285B (en) * | 2009-09-22 | 2011-07-27 | 同济大学 | Fatigue bending machine for concrete material |
| CN102252911A (en) * | 2011-04-27 | 2011-11-23 | 西安建筑科技大学 | Loading device for high formwork support system full-scale test |
| CN102519637A (en) * | 2011-12-08 | 2012-06-27 | 北京工业大学 | Force determining support for structural test |
| CN102680321A (en) * | 2012-05-18 | 2012-09-19 | 河海大学 | Lever-type drawing device for testing anchoring performance of planting bar and implementation method thereof |
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| CN103134700A (en) * | 2013-01-29 | 2013-06-05 | 泰州市房城建筑质量评估事务有限公司 | On-site test method and device for construction enclosure construction member horizontal thrust performance |
| CN104280297A (en) * | 2014-09-23 | 2015-01-14 | 同济大学 | Counterforce beam loading device and loading method for static load test of bridge beam body |
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| CN104359768A (en) * | 2014-10-24 | 2015-02-18 | 天津大学 | Testing device for flexural property of concrete beam at ultralow temperature |
| CN105043800A (en) * | 2015-07-17 | 2015-11-11 | 中国矿业大学 | Self-balancing high heavy level load loading method and device |
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| CN106596287A (en) * | 2016-11-01 | 2017-04-26 | 同济大学 | Tool type masonry flexure strength test lateral loading device |
| EA027933B1 (en) * | 2015-08-25 | 2017-09-29 | Федеральное Государственное Бюджетное Образовательное Учреждение Высшего Образования "Томский Государственный Архитектурно-Строительный Университет" | Bench for testing building structures for short-time dynamic compression load |
| CN107238529A (en) * | 2017-07-12 | 2017-10-10 | 安徽省建筑科学研究设计院 | A kind of precast concrete test device for multifunctional and installation method |
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2006
- 2006-09-13 CN CNU2006200457450U patent/CN201000411Y/en not_active Expired - Fee Related
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| CN102252911A (en) * | 2011-04-27 | 2011-11-23 | 西安建筑科技大学 | Loading device for high formwork support system full-scale test |
| CN102252911B (en) * | 2011-04-27 | 2013-09-18 | 西安建筑科技大学 | Loading device for high formwork support system full-scale test |
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| CN107966290A (en) * | 2017-12-27 | 2018-04-27 | 国网江苏省电力有限公司经济技术研究院 | Modular combined type tension-compression reaction frame structure |
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| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C17 | Cessation of patent right | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20080102 Termination date: 20110913 |