CN201698622U - External prestressing experiment device - Google Patents
External prestressing experiment device Download PDFInfo
- Publication number
- CN201698622U CN201698622U CN2009203173295U CN200920317329U CN201698622U CN 201698622 U CN201698622 U CN 201698622U CN 2009203173295 U CN2009203173295 U CN 2009203173295U CN 200920317329 U CN200920317329 U CN 200920317329U CN 201698622 U CN201698622 U CN 201698622U
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- CN
- China
- Prior art keywords
- test beam
- reinforcing steel
- external prestressing
- prestressing
- experimental provision
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Expired - Fee Related
Links
- 238000011068 load Methods 0.000 claims abstract description 26
- 229910001294 Reinforcing steel Inorganic materials 0.000 claims abstract description 20
- 238000006073 displacement reaction Methods 0.000 claims description 2
- 238000010276 construction Methods 0.000 abstract description 8
- 238000003825 pressing Methods 0.000 abstract 1
- 238000000034 method Methods 0.000 description 4
- 239000000463 material Substances 0.000 description 3
- 238000004088 simulation Methods 0.000 description 3
- 238000005516 engineering process Methods 0.000 description 2
- 210000002435 Tendons Anatomy 0.000 description 1
- 238000004873 anchoring Methods 0.000 description 1
- 230000013632 homeostatic process Effects 0.000 description 1
- 238000009434 installation Methods 0.000 description 1
- 230000002787 reinforcement Effects 0.000 description 1
- 239000002965 rope Substances 0.000 description 1
- 238000011105 stabilization Methods 0.000 description 1
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Abstract
The utility model relates to an external prestressing experiment device, which comprises a bracket arranged on the two sides of the upper part of a base, wherein an external prestressed structure formed by a test beam and a prestressed reinforcing steel wound on the bottom side of the test beam is horizontally arranged on the bracket and spaced from the ground. The device is characterized in that a loading mechanism vertically applying pressure on the test beam is arranged above the base, a load sensor is arranged on the loading mechanism, a support is arranged on the lower surface of the test beam in a protruding manner, the prestressed reinforcing steel is wound from one end of the test beam to the other end thereof through the support below the test beam, and tensile force sensors are arranged at the two ends of the prestressed reinforcing steel. By adopting a simple structural system and advanced external prestressing technologies, the utility model can reveal the basic principles of prestressing technologies, display the main construction contents of prestressing projects, and measure relevant experimental data to verify construction theories and the mechanical properties of prestressed structures; and the experiment device can complete multiple experimental contents.
Description
Technical field
The utility model relates to a kind of external prestressing experimental provision.
Background technology
Experimental teaching is an important component part of higher education, is one of important means of cultivating the students ' practical ability and the capacity of scientific research.But the Construction of Civil Engineering experimental teaching is a weak link in colleges and universities' practical teaching always, at present, the construction experiment of most of colleges and universities is still a blank, there are a spot of colleges and universities to set up training base, its experimental project mostly is the simulation of work progress, fails to rise to construction principle and theoretical level.
At present, domestic prestress experimental provision, the main employing has bonding or no-bonding pre-stress concrete beam, no proving installation, can only embody the stretching process of presstressed reinforcing steel, and presstressed reinforcing steel is arranged on concrete component inside, directly perceived inadequately, also be difficult to develop the Secondary Design experiment, it is big to take up room.
Summary of the invention
The purpose of this utility model is to provide a kind of external prestressing experimental provision, and this external prestressing experimental provision is simple in structure, reasonable in design, not only helps measuring the performance parameter of prestressed structure, and helps the experimental teaching of Construction of Civil Engineering.
The utility model external prestressing experimental provision, comprise the support of being located at both sides, pedestal top, level is soared and is placed with the external prestressing structure that is made of test beam and the presstressed reinforcing steel that is set around the test beam bottom side on the described support, it is characterized in that: described pedestal top is provided with the loading mechanism that vertically exerts pressure to test beam, described loading mechanism is provided with load sensor, described test beam lower surface convexes with bearing, around the other end to test beam, described presstressed reinforcing steel two ends are provided with pulling force sensor to described presstressed reinforcing steel from the bearing of test beam one end below test beam.
The utility model adopts simple structural system and advanced external prestressing technology, can disclose the ultimate principle of prestressing technique; Disclose the major part construction content of prestress engineering; Can carry out the test of related experiment data, the mechanical characteristic of checking construction theory and prestressed structure.This experimental provision can be finished multinomial experiment content, and can develop the Secondary Design experiment on its basis, also can be on its basis to stressing equipment, material, the experiment of the structure property studied, demonstrated fully " three property " requirement of experiment of comprehensive, designability, research exploration.
Description of drawings
Fig. 1 is an organigram of the present utility model;
Fig. 2 is the A-A cut-open view of Fig. 1;
Fig. 3 is the B-B cut-open view of Fig. 1.
Embodiment
The utility model external prestressing experimental provision, comprise the support 13 of being located at both sides, pedestal top, level is soared and is placed with the external prestressing structure that is made of test beam 1 and the presstressed reinforcing steel 4 that is set around test beam 1 bottom side on the described support 13, described pedestal top is provided with the loading mechanism 2 that vertically exerts pressure to test beam 1, described loading mechanism 2 is provided with load sensor 10, described test beam lower surface convexes with bearing 3, around the other end to test beam, described presstressed reinforcing steel two ends are provided with pressure transducer 6 to described presstressed reinforcing steel 4 from the bearing of test beam one end below test beam.
For the homeostasis of experimental provision, establish one's own system, loading is flexible, be convenient to the loading experiment of external prestressing structure, loading mechanism 2 comprise be horizontally set with the counter-force girder 7 on the support 1 and be arranged on counter-force girder 7 and test beam 1 between the loading lifting jack 8 and the distribution beam 9 that can move horizontally.Be provided with movably distribution beam between loading lifting jack and the test beam.
For the ease of experiment control, described bearing 3 can move horizontally and can fix with respect to test beam 1; The moving horizontally and can fix of the loading lifting jack 8 of described loading mechanism 2 with respect to test beam.
For stretch-draw with set up prestress, be anchored in the end of test beam 1 by ground tackle 5 in presstressed reinforcing steel 4 two ends.
In order to measure load, stress and distortion, loading lifting jack 8 is provided with load sensor 10, and bearing 3 is provided with pressure transducer 11, and test beam two ends and middle part are provided with displacement transducer 12, and total data is gathered automatically by computer and software.
For experiment safety, the equipment that may come off all is provided with safe wire rope 14.
The utility model device can carry out tension of prestressed tendon experiment, Extension Values of Prestress Reinforcements experiment, presstressed reinforcing steel anchoring experiment, loss of prestress experiment, external prestressing member loading experiment, the experiment of the external prestressing deformation of member, the lax experiment of presstressed reinforcing steel, also can carry out the new section bar of external prestressing member, new presstressed reinforcing steel material, novel anchorage test and simulation test, simultaneously, the configurable data acquisition system, data automatic collecting etc. experimentizes.
The utility model characteristics
1, this experimental provision can be realized repeated test, is convenient to experimental teaching.
2, the big I of this experimental provision is scaled according to site condition.
3, this experimental provision is succinct, directly perceived, and observable experiment overall process is surveyed the variation of reading various stress, distortion, discloses the inherent law of prestressed structure.
4, this experimental provision can embody on-the-spot prestressed structure work progress comprehensively, and can survey and read to construct the variation of stress, strain afterwards.
5, this experimental provision can be realized the multiple test of prestressing technique, also can carry out the test of the new section bar of prestressed component, new presstressed reinforcing steel material, novel anchorage and simulation test etc.
6, this experimental provision can be realized self-stabilization and interior force self-balanced, need not pedestal, and is easy to assembly.
Claims (5)
1. external prestressing experimental provision, comprise the support of being located at both sides, pedestal top, level is soared and is placed with the external prestressing structure that is made of test beam and the presstressed reinforcing steel that is set around the test beam bottom side on the described support, it is characterized in that: described pedestal top is provided with the loading mechanism that vertically exerts pressure to test beam, described loading mechanism is provided with load sensor, described test beam lower surface convexes with bearing, around the other end to test beam, described presstressed reinforcing steel two ends are provided with pulling force sensor to described presstressed reinforcing steel from the bearing of test beam one end below test beam.
2. external prestressing experimental provision according to claim 1 is characterized in that: described loading mechanism comprises and is horizontally set with at the counter-force girder on the support and is arranged on loading lifting jack between counter-force girder and the test beam.
3. external prestressing experimental provision according to claim 2 is characterized in that: be provided with movably distribution beam between described loading lifting jack and the test beam.
4. external prestressing experimental provision according to claim 1 is characterized in that: described presstressed reinforcing steel two ends is anchored at the end of test beam by ground tackle.
5. external prestressing experimental provision according to claim 1 is characterized in that: described bearing is provided with pressure transducer, and test beam two ends and middle part are provided with displacement transducer.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2009203173295U CN201698622U (en) | 2009-12-14 | 2009-12-14 | External prestressing experiment device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2009203173295U CN201698622U (en) | 2009-12-14 | 2009-12-14 | External prestressing experiment device |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN201698622U true CN201698622U (en) | 2011-01-05 |
Family
ID=43399868
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2009203173295U Expired - Fee Related CN201698622U (en) | 2009-12-14 | 2009-12-14 | External prestressing experiment device |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN201698622U (en) |
Cited By (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102494945A (en) * | 2011-11-16 | 2012-06-13 | 浙江建设职业技术学院 | Test apparatus for endurance of flexural member under load-environment coupling |
| CN103063174A (en) * | 2011-10-20 | 2013-04-24 | 上海力远计算机科技有限公司 | Wireless prestress tensile elongation measuring device |
| CN103616010A (en) * | 2013-12-03 | 2014-03-05 | 精工工业建筑系统有限公司 | Warning device between flexible columns of structure workshop |
| CN104142270A (en) * | 2014-07-31 | 2014-11-12 | 桂林理工大学 | Large reverse loading device |
| CN104359764A (en) * | 2014-12-05 | 2015-02-18 | 福州大学 | Secondary stress loading test device convenient for reinforcing structure under constant load and manufacturing method of secondary stress loading test device |
| CN105043800A (en) * | 2015-07-17 | 2015-11-11 | 中国矿业大学 | Self-balancing high heavy level load loading method and device |
| CN109781549A (en) * | 2019-01-31 | 2019-05-21 | 中铁六局集团有限公司 | U-shaped beam Static Load Test Method |
| CN114993833A (en) * | 2022-08-03 | 2022-09-02 | 广州大学 | Prestress detection system and detection method for prestress rubber shock insulation support |
-
2009
- 2009-12-14 CN CN2009203173295U patent/CN201698622U/en not_active Expired - Fee Related
Cited By (11)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103063174A (en) * | 2011-10-20 | 2013-04-24 | 上海力远计算机科技有限公司 | Wireless prestress tensile elongation measuring device |
| CN102494945A (en) * | 2011-11-16 | 2012-06-13 | 浙江建设职业技术学院 | Test apparatus for endurance of flexural member under load-environment coupling |
| CN102494945B (en) * | 2011-11-16 | 2014-08-13 | 浙江建设职业技术学院 | Test apparatus for endurance of flexural member under load-environment coupling |
| CN103616010A (en) * | 2013-12-03 | 2014-03-05 | 精工工业建筑系统有限公司 | Warning device between flexible columns of structure workshop |
| CN103616010B (en) * | 2013-12-03 | 2016-02-10 | 精工工业建筑系统有限公司 | Prior-warning device between structure workshop flexible column |
| CN104142270A (en) * | 2014-07-31 | 2014-11-12 | 桂林理工大学 | Large reverse loading device |
| CN104359764A (en) * | 2014-12-05 | 2015-02-18 | 福州大学 | Secondary stress loading test device convenient for reinforcing structure under constant load and manufacturing method of secondary stress loading test device |
| CN105043800A (en) * | 2015-07-17 | 2015-11-11 | 中国矿业大学 | Self-balancing high heavy level load loading method and device |
| CN109781549A (en) * | 2019-01-31 | 2019-05-21 | 中铁六局集团有限公司 | U-shaped beam Static Load Test Method |
| CN109781549B (en) * | 2019-01-31 | 2021-05-28 | 中铁六局集团有限公司 | U-shaped beam static load test method |
| CN114993833A (en) * | 2022-08-03 | 2022-09-02 | 广州大学 | Prestress detection system and detection method for prestress rubber shock insulation support |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20110105 Termination date: 20141214 |
|
| EXPY | Termination of patent right or utility model |