CN102706682A - Detachable novel truss node testing device - Google Patents
Detachable novel truss node testing device Download PDFInfo
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- CN102706682A CN102706682A CN2012101961079A CN201210196107A CN102706682A CN 102706682 A CN102706682 A CN 102706682A CN 2012101961079 A CN2012101961079 A CN 2012101961079A CN 201210196107 A CN201210196107 A CN 201210196107A CN 102706682 A CN102706682 A CN 102706682A
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Abstract
The invention discloses a detachable novel truss node testing device belonging to the field of structural engineering in civil engineering. The detachable novel truss node testing device comprises a main body (1) of the testing device and a truss node (2) to be tested, wherein the main body (1) of the testing device is connected with the truss node (2) to be tested through flanges (4) and flanges (6); a chord member (3) of the node is connected with a main bar (9) of the device by the flanges (4) through bolts; web members (5) of the node are connected with branch bars (10) of the device by the flanges (6) through bolts; a chord member load sensor (7) is distributed at one end part of the chord member (3) of the node; and web member load sensors (8) are distributed at the end parts of the web members (5) of the node. Through applying a simple unidirectional load to the main body (1) of the testing device, multiple boundary conditions can be applied to the truss node (2) to be tested through each connecting bar, so as to simulate the forced state of the truss node (2) to be tested in a real structure. The device can clearly transmit force, is simple and convenient to operate, is economic and reliable, and can be repeatedly utilized.
Description
Technical field
The invention belongs to the Structural Engineering field in the civil engineering work, particularly a kind of detachable novel panel point test unit.
Background technology
Truss-frame structure has light weight, rigidity is big, overall performance good, specious, making and premium properties such as easy for installation.In recent years, be widely used in the engineering practice at home and abroad of each truss-like structure, like bridge, museum, stadium, dome structures, airport terminal, station, towering pylon etc.Some large stadiums such as National Indoor Stadium, Pekinese, Grand National Theatre, the new building of Beijing Capital International Airport; Bridge such as Zhong County, the Sichuan Yangtze Bridge, South Sea Zi Dong bridge etc. have all adopted truss-frame structure, and have obtained good engineering effort.
Node is the key position in the truss-frame structure, also is the most complicated zone of stressing conditions.The mechanical property of node is the guarantee of truss-frame structure safety, therefore, need carry out mechanical test targetedly to panel point, and joint behavior is studied and assessed.In traditional individual node test, need apply corresponding load, displacement boundary conditions to each rod member of node, and often need realize synchronous loading, with the actual forced status of approximate simulation node to a plurality of different angles rod ends.This brings great difficulty to test operation, even is difficult to effective realization.Along with the perfect and solder technology of structure processing technology, the progress on the equipment, the form of panel point (quantity of node area rod member, angle etc.) is more and more, and corresponding, its load-displacement boundary condition also becomes increasingly complex.How to realize the accurate simulation of panel point complex boundary is also loaded easily, test having proposed new requirement to node.Therefore, clear and definite, easy and simple to handle, the economic and reliable of a kind of power transmission of active demand in the practice, the accurate panel point test unit of analog node actual forced status adapt to the demand of scientific research and engineering practice.
Summary of the invention
The technical matters that the present invention will solve is a kind of detachable panel point test unit that proposes, and this device can effectively solve shortcomings such as the complex operation, complex structure, accuracy and the reliability that exist in the above-mentioned prior art be not high enough, less economical.
For addressing the above problem, the present invention proposes following technical scheme:
A kind of detachable novel panel point test unit comprises test unit main body 1 and panel point 2 to be tested; Described test unit main body 1 comprises device mobile jib 9 and device pole 10; Described panel point to be tested 2 comprises node chord member 3 and node web member 5;
Wherein, described test unit main body 1 and panel point 2 to be tested are connected with flange 6 through flange 4: node chord member 3 with install mobile jib 9 and be connected through bolt by flange 4, node web member 5 with install pole 10 and be connected through bolt by flange 6; During connection,, make the dead in line of corresponding rod member in rod member and the device of node through flange, bolt location; The concrete specification of flange and bolt should be confirmed according to the maximum tensile strength of rod member, to guarantee to connect effective transmission that can realize load all the time;
Chord member load transducer 7 is arranged in end at node chord member 3, arranges web member load transducer 8 in the end of node web member 5, with the internal force of each rod member of real-time testing node.
On this basis, through test unit main body 1 being applied simple unidirectional load, as pressing load, can connect rod member through each and treat the panel point 2 of test and apply multiple boundary condition, simulate its stress in practical structures; Simultaneously can the joining of node chord member 3 and node web member 5 or near, arrange strainometer and displacement meter, with real-time response data such as the load-distortion of acquisition node, load-strain curves.
The truss form of test unit main body 1 can adopt other common form such as Hua Lunshi (Warren) truss, Alexandre Desplat (Pratt) truss or funk (Fink) truss;
The truss type of test unit main body 1 can adopt steel truss or steel-concrete combined structure truss;
The xsect of said node chord member 3 and node web member 5 is rectangle, circle, ellipse, I shape, L type or grooved;
Said node chord member 3 is common iron, high-strength steel or stainless steel with the steel material that node web member 5 adopts, and the concrete material of employing is normal concrete or high-strength concrete;
Said panel point to be tested 2 can be K shape, T shape, N shape, KT shape, Y shape or X-shaped; According to the demand of multi-form node area, arrange through the rod member of adjustment truss device.
Beneficial effect of the present invention is:
(1) compare with individual node test unit commonly used at present, this detachable panel point test unit has been avoided the joint actuation of a plurality of lifting jack multi-angles, loading synchronously; Through this device, only need apply unidirectional load, can be through the Load Transfer between device rod member and the panel point rod member to be tested, the complicated applied force of realization node; Thereby easy and simple to handle, greatly reduce the test difficulty;
(2) this detachable panel point test unit; The boundary condition that can make node and its consistent in real structure; Can simulate panel point to be tested actual forced status in truss more accurately, improve the accuracy and the reliability of Experiments of Machanics;
(3) this panel point test unit power transmission is clear and definite, can analyze the load of node rod member through mechanical concept and related software; Simultaneously, can obtain full and accurate node test figure, be beneficial to analysis test findings through being used of load transducer, strainometer, displacement meter;
(4) in this panel point test unit, be connected with panel point to be tested through flange, bolt, behind destruction of a node, can node be dismantled, the connection new node also makes an experiment, and reaches reusable effect, good economy performance;
(5) this device is applicable to the node of multiple shapes such as polytype truss-frame structures such as Hua Lunshi (Warren) truss, Alexandre Desplat (Pratt) truss or funk (Fink) truss and K shape, T shape, N shape, KT shape, multiple cross section, multiple material.
Description of drawings
Fig. 1 is the K shape panel point test unit figure of embodiments of the invention 1;
Fig. 2 is the T shape panel point test unit figure of embodiments of the invention 2;
Fig. 3 is the N shape panel point test unit figure of embodiments of the invention 3;
Fig. 4 is the KT shape panel point test unit figure of embodiments of the invention 4;
The Hua Lunshi that Fig. 5 is suitable for for the present invention (Warren) truss synoptic diagram, the node that indicates among the figure is a K shape node;
The Alexandre Desplat that Fig. 6 is suitable for for the present invention (Pratt) truss synoptic diagram, the node that indicates among the figure is a N shape node;
The funk that Fig. 7 is suitable for for the present invention (Fink) truss synoptic diagram, the node that indicates among the figure has two kinds, and the node of its middle and upper part is the T-section point, and the node of bottom is a K shape node;
The T shape panel point synoptic diagram that Fig. 8 can be used for testing for device provided by the present invention;
The K shape panel point synoptic diagram that Fig. 9 can be used for testing for device provided by the present invention;
The N shape panel point synoptic diagram that Figure 10 can be used for testing for device provided by the present invention;
The KT shape panel point synoptic diagram that Figure 11 can be used for testing for device provided by the present invention;
Embodiment
The invention provides a kind of detachable novel panel point test unit, do further explanation below in conjunction with embodiment and accompanying drawing specific embodiments of the invention.
Embodiment 1:
Fig. 1 is embodiments of the invention, the test unit synoptic diagram of tested K shape panel point.
The structure of test unit main body 1 reserves the space of K shape node according to Hua Lunshi (Warren) truss fabrication of K shape node application in exemplary position.Simultaneously; The bar cross section strength and stiffness of test unit main body 1 should be more than 1.5 times of panel point 2 (described panel point 2 to be tested comprises node chord member 3 and node web member 5) to be tested, with the final effect that obtains panel point to be tested 2 destructions of warranty test.K shape panel point 2 to be tested is made up of node chord member 3 and two node web members 5, and for the node area that guarantees K shape panel point 2 to be tested does not receive the influence of rod end load, the length of node chord member 3 is got 7 ~ 8 times of node chord member 3 external diameters; The length of node web member 5 is got 5 ~ 6 times of node web member 5 external diameters.
Test unit main body 1 and panel point 2 to be tested are connected with 4 flanges 6 through 3 flanges 4: wherein node chord member 3 with install mobile jib 9 and be connected through bolt by flange 4, node web member 5 bars with install pole 10 and be connected through bolt by flange 6; During connection, need, make the dead in line of corresponding rod member in rod member and the device of node, to guarantee effective transmission of truss member axle power through flange, bolt location.In the end of node chord member 3, arrange chord member load transducer 7, in the end of node web member 5, arrange web member load transducer 8, test its rod member internal force respectively in process of the test.The joining of node chord member 3 and node web member 5 or near, arrange strainometer and displacement meter, with real-time response data such as load-distortion of obtaining node, load-strain curves.
After the device installation, utilize lifting jack or MTS actuator, device top mobile jib 11 is applied the pressure load, through the Load Transfer between the rod member, the actual working state of the panel point 2 that simulation K shape node is to be tested.After the off-test, panel point 2 dismountings that K shape node is to be tested, the panel point to be tested that more renews makes an experiment once more.
Embodiment 2:
Fig. 2 is embodiments of the invention, the test unit synoptic diagram of test T shape panel point.
The truss fabrication that the structure of test unit main body 1 is used according to T-section point; The bar cross section strength and stiffness of test unit main body 1 are more than 1.5 times of panel point 2 (described panel point 2 to be tested comprises node chord member 3 and node web member 5) to be tested, with the final effect that obtains panel point to be tested 2 destructions of warranty test.T shape panel point 2 to be tested is made up of node chord member 3 and node web member 5, and both are vertical each other, and for the node area that guarantees T shape panel point 2 to be tested does not receive the influence of rod end load, the length of node chord member 3 is got 7 ~ 8 times of node chord member 3 external diameters; The length of node web member 5 is got 5 ~ 6 times of node web member 5 external diameters.
Test unit main body 1 and panel point 2 to be tested are connected with 2 flanges 6 through 3 flanges 4: wherein node chord member 3 with install mobile jib 9 and be connected through bolt by flange 4, node web member 5 with install pole 10 and be connected through bolt by flange 6; During connection, need, make the dead in line of corresponding rod member in rod member and the device of node, to guarantee effective transmission of truss member axle power through flange, bolt location.In the end of node chord member 3, arrange chord member load transducer 7, in the end of node web member 5, arrange web member load transducer 8, test its rod member internal force respectively in process of the test.The joining of node chord member 3 and node web member 5 or near, arrange strainometer and displacement meter, with real-time response data such as load-distortion of obtaining node, load-strain curves.
After the device installation, utilize lifting jack or MTS actuator, device top mobile jib 11 is applied the pressure load, through the Load Transfer between the rod member, the actual working state of the panel point 2 that simulation T-section point is to be tested.After the off-test, T-section is put panel point to be tested 2 dismountings, the panel point to be tested 2 that more renews makes an experiment once more.
Embodiment 3:
Fig. 3 is embodiments of the invention, the test unit synoptic diagram of test N shape panel point.
The truss fabrication that the structure of test unit main body 1 is used according to N shape node; The bar cross section strength and stiffness of device 1 are more than 1.5 times of panel point 2 (described panel point 2 to be tested comprises node chord member 3 and node web member 5) to be tested, with the final effect that obtains panel point to be tested 2 destructions of warranty test.N shape panel point 2 to be tested is made up of node chord member 3 and two node web members 5, and for the node area that guarantees N shape panel point 2 to be tested does not receive the influence of rod end load, the length of node chord member 3 is got 7 ~ 8 times of its external diameter; The length of node web member 5 is got 5 ~ 6 times of its external diameter.
Test unit main body 1 and panel point 2 to be tested are connected with 4 flanges 6 through 3 flanges 4: wherein node chord member 3 with install mobile jib 9 and be connected through bolt by flange 4, node web member 5 with install pole 10 and be connected through bolt by flange 6; During connection, need, make the dead in line of corresponding rod member in rod member and the device of node, to guarantee effective transmission of truss member axle power through flange, bolt location.In the end of node chord member 3, arrange chord member load transducer 7, in the end of node web member 5, arrange web member load transducer 8, test its rod member internal force respectively in process of the test.The joining of node chord member 3 and node web member 5 or near, arrange strainometer and displacement meter, with real-time response data such as load-distortion of obtaining node, load-strain curves.
After node, the measuring equipment installation, utilize lifting jack or MTS actuator, device top mobile jib 11 is applied the pressure load, through the Load Transfer between the rod member, the actual working state of the panel point 2 that simulation N shape node is to be tested.After the off-test, panel point 2 dismountings that N shape node is to be tested, the panel point to be tested that more renews makes an experiment once more.
Embodiment 4:
Fig. 4 is embodiments of the invention, the test unit synoptic diagram of tested K T shape panel point.
The truss fabrication that the structure of test unit main body 1 is used according to KT shape node; The bar cross section strength and stiffness of device 1 are more than 1.5 times of panel point 2 (described panel point 2 to be tested comprises node chord member 3 and node web member 5) to be tested, with the final effect that obtains panel point to be tested 2 destructions of warranty test.KT shape panel point 2 to be tested is made up of node chord member 3 and three node web members 5, and for the node area that guarantees KT shape panel point 2 to be tested does not receive the influence of rod end load, the length of node chord member 3 is got 7 ~ 8 times of node chord member 3 external diameters; The length of node web member 5 is got 5 ~ 6 times of node web member 5 external diameters.
Test unit main body 1 and panel point 2 to be tested are connected with 6 flanges 6 through 3 flanges 4: wherein node chord member 3 with install mobile jib 9 and be connected through bolt by flange 4, node web member 5 with install pole 10 and be connected through bolt by flange 6; During connection, need, make the dead in line of corresponding rod member in rod member and the device of node, to guarantee effective transmission of truss member axle power through flange, bolt location.In the end of node chord member 3, arrange chord member load transducer 7, in the end of node web member 5, arrange web member load transducer 8, test its rod member internal force respectively in process of the test.The joining of node chord member 3 and node web member 5 or near, arrange strainometer and displacement meter, with real-time response data such as load-distortion of obtaining node, load-strain curves.
After node, the measuring equipment installation, utilize lifting jack or MTS actuator, device top mobile jib 11 is applied the pressure load, through the Load Transfer between the rod member, the actual working state of the panel point 2 that simulation KT shape node is to be tested.After the off-test, panel point 2 dismountings that KT shape node is to be tested, the panel point to be tested that more renews makes an experiment once more.
Claims (10)
1. a detachable novel panel point test unit is characterized in that, described detachable novel panel point test unit comprises test unit main body (1) and panel point (2) to be tested;
Wherein, Described test unit main body (1) and panel point (2) to be tested; Be connected with flange (6) through flange (4): node chord member (3) is connected through bolt by flange (4) with device mobile jib (9), and node web member (5) is connected through bolt by flange (6) with device pole (10); During connection,, make the dead in line of corresponding rod member in rod member and the device of node through flange, bolt location;
Chord member load transducer (7) is arranged in end at node chord member (3), arranges web member load transducer (8) in the end of node web member (5), is used for the internal force of each rod member of real-time testing node.
2. detachable novel panel point test unit according to claim 1; It is characterized in that; The joining of node chord member (3) and node web member (5) or near; Arrange strainometer and displacement meter, be used to obtain the load-distortion of node, the real-time response data of load-strain curve.
3. detachable novel panel point test unit according to claim 1 is characterized in that, the truss form of described test unit main body (1) adopts Warren truss, Pratt truss or Fink truss.
4. detachable novel panel point test unit according to claim 1 is characterized in that said panel point to be tested (2) is K shape, T shape, N shape, KT shape, Y shape or X-shaped.
5. detachable novel panel point test unit according to claim 1 is characterized in that, the truss type of described test unit main body (1) adopts steel truss or steel-concrete combined structure truss.
6. detachable novel panel point test unit according to claim 1 is characterized in that, the xsect of said node chord member (3) and node web member (5) is a kind of in rectangle, circle, ellipse, I shape, L type and the grooved.
7. detachable novel panel point test unit according to claim 1; It is characterized in that; The steel material that said node chord member (3) and node web member (5) adopt is common iron, high-strength steel or stainless steel, and the concrete material of employing is normal concrete or high-strength concrete.
8. detachable novel panel point test unit according to claim 1 is characterized in that, the bar cross section strength and stiffness of described test unit main body (1) are more than 1.5 times of panel point (2) to be tested.
9. detachable novel panel point test unit according to claim 1 is characterized in that the length of described node chord member (3) is got 7 ~ 8 times of node chord member (3) external diameter; The length of node web member (5) is got 5 ~ 6 times of node web member (5) external diameter.
10. detachable novel panel point test unit according to claim 1 is characterized in that, after the off-test, with panel point to be tested (2) dismounting, the panel point to be tested that more renews makes an experiment once more.
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| CN2012101961079A CN102706682A (en) | 2012-06-14 | 2012-06-14 | Detachable novel truss node testing device |
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| CN2012101961079A CN102706682A (en) | 2012-06-14 | 2012-06-14 | Detachable novel truss node testing device |
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Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108051162A (en) * | 2017-12-15 | 2018-05-18 | 郑州大学 | Concrete-steel truss combination beam is by torsional test device and combination beam fixed frame |
| CN109932168A (en) * | 2019-04-04 | 2019-06-25 | 中建一局集团第六建筑有限公司 | Large-span steel structure beam column joint test method |
| CN110595901A (en) * | 2019-09-29 | 2019-12-20 | 扬州大学 | Novel truss node self-balancing test device and test method thereof |
| CN113958004A (en) * | 2021-09-07 | 2022-01-21 | 江苏省建筑工程集团有限公司 | Large-span cantilever truss structure and construction method thereof |
Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2007292628A (en) * | 2006-04-26 | 2007-11-08 | Hitachi Engineering & Services Co Ltd | Flange fastening surveillance device |
| CN202002842U (en) * | 2011-01-20 | 2011-10-05 | 武汉远通路桥物资有限公司 | Pin-joint truss type static load test device |
| CN202710335U (en) * | 2012-06-14 | 2013-01-30 | 清华大学 | Detachable novel truss node testing device |
-
2012
- 2012-06-14 CN CN2012101961079A patent/CN102706682A/en active Pending
Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2007292628A (en) * | 2006-04-26 | 2007-11-08 | Hitachi Engineering & Services Co Ltd | Flange fastening surveillance device |
| CN202002842U (en) * | 2011-01-20 | 2011-10-05 | 武汉远通路桥物资有限公司 | Pin-joint truss type static load test device |
| CN202710335U (en) * | 2012-06-14 | 2013-01-30 | 清华大学 | Detachable novel truss node testing device |
Non-Patent Citations (2)
| Title |
|---|
| 宋谦益: "圆钢管混凝土-钢管K形节点的力学性能研究", 《中国优秀硕士学位论文全文数据库·工程科技II辑》 * |
| 王渊阳: ""间隙K型节点方管桁架静力工作性能的试验研究"", 《中国优秀硕士学位论文全文数据库·工程科技II辑》 * |
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108051162A (en) * | 2017-12-15 | 2018-05-18 | 郑州大学 | Concrete-steel truss combination beam is by torsional test device and combination beam fixed frame |
| CN109932168A (en) * | 2019-04-04 | 2019-06-25 | 中建一局集团第六建筑有限公司 | Large-span steel structure beam column joint test method |
| CN110595901A (en) * | 2019-09-29 | 2019-12-20 | 扬州大学 | Novel truss node self-balancing test device and test method thereof |
| CN110595901B (en) * | 2019-09-29 | 2022-04-12 | 扬州大学 | Novel truss node self-balancing test device and test method thereof |
| CN113958004A (en) * | 2021-09-07 | 2022-01-21 | 江苏省建筑工程集团有限公司 | Large-span cantilever truss structure and construction method thereof |
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Application publication date: 20121003 |