CN202710335U - Detachable novel truss node testing device - Google Patents
Detachable novel truss node testing device Download PDFInfo
- Publication number
- CN202710335U CN202710335U CN 201220284842 CN201220284842U CN202710335U CN 202710335 U CN202710335 U CN 202710335U CN 201220284842 CN201220284842 CN 201220284842 CN 201220284842 U CN201220284842 U CN 201220284842U CN 202710335 U CN202710335 U CN 202710335U
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- truss
- testing device
- panel point
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Abstract
The utility model 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. 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 utility model belongs to the Structural Engineering field in the civil engineering work, particularly a kind of detachable Novel truss joint testing device.
Background technology
Truss-frame structure has that quality is light, rigidity is large, overall performance is good, specious, making and the 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, such as bridge, museum, stadium, dome structures, airport building, station, Latticed Towers 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 to carry out targetedly mechanical test to panel point, and joint behavior is studied and assessed.In the test of traditional individual node, need to apply corresponding load, displacement boundary conditions to each rod member of node, and often need to realize the synchronous loading to a plurality of different angles rod ends, with the actual forced status of approximate simulation node.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, Joints has been proposed Secretary.Therefore, clear and definite, easy and simple to handle, economic reliable, the accurate panel point test unit of analog node actual forced status of a kind of power transmission of active demand in the practice adapts to the demand of scientific research and engineering practice.
The utility model content
The technical problems to be solved in the utility model is a kind of detachable panel point test unit that proposes, and this device can effectively solve the 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 utility model proposes following technical scheme:
A kind of detachable Novel truss joint testing device 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 connection with flange by flange 4: node chord member 3 and device mobile jib 9 are bolted by flange 4, and node web member 5 and device pole 10 are bolted by flange 6; During connection, by flange, Bolt to position, so that the dead in line of corresponding rod member in the rod member of node and the device; The concrete specification of flange and bolt should be determined according to the maximum tensile strength of rod member, to guarantee to connect the effective communication that can realize all the time load;
Load on the chord sensor 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, by test unit main body 1 being applied simple unidirectional load, as pressing load, can apply multiple boundary condition to panel point to be tested 2 by each connecting rod, 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 that obtains node-distortion, 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 described node chord member 3 and node web member 5 is rectangle, circle, ellipse, I shape, L-type or grooved;
The steel material that described 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;
Described 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 by the rod member of adjusting girder device.
The beneficial effects of the utility model are:
(1) compare with individual node test unit commonly used at present, this detachable panel point test unit has been avoided the associating start of a plurality of lifting jack multi-angles, synchronously loading; By this device, only need to apply unidirectional load, can be by 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 more accurately panel point to be tested actual forced status in truss, improve 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 by mechanical concept and related software; Simultaneously, can obtain full and accurate Joints data by being used in conjunction with of load transducer, strainometer, displacement meter, be beneficial to the analysis to test findings;
(4) in this panel point test unit, be connected with panel point to be tested by flange, bolt, behind destruction of a node, node can be dismantled, connect new node and also test, reach reusable effect, good economy performance;
(5) this device is applicable to polytype truss-frame structures such as Hua Lunshi (Warren) truss, Alexandre Desplat (Pratt) truss or funk (Fink) truss, and the node of the various shape such as K shape, T shape, N shape, KT shape, multiple section, multiple material.
Description of drawings
Fig. 1 is the K shape panel point test unit figure of embodiment 1 of the present utility model;
Fig. 2 is the T shape panel point test unit figure of embodiment 2 of the present utility model;
Fig. 3 is the N shape panel point test unit figure of embodiment 3 of the present utility model;
Fig. 4 is the KT shape panel point test unit figure of embodiment 4 of the present utility model;
Fig. 5 is applicable Hua Lunshi (Warren) the truss schematic diagram of the utility model, and the node that indicates among the figure is K shape node;
Fig. 6 is applicable Alexandre Desplat (Pratt) the truss schematic diagram of the utility model, and the node that indicates among the figure is N shape node;
Fig. 7 is applicable funk (Fink) the truss schematic diagram of the utility model, and 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 K shape node;
Fig. 8 is the T shape panel point schematic diagram that device provided by the utility model can be used for testing;
Fig. 9 is the K shape panel point schematic diagram that device provided by the utility model can be used for testing;
Figure 10 is the N shape panel point schematic diagram that device provided by the utility model can be used for testing;
Figure 11 is the KT shape panel point schematic diagram that device provided by the utility model can be used for testing;
Embodiment
The utility model provides a kind of detachable Novel truss joint testing device, below in conjunction with embodiment and accompanying drawing embodiment of the present utility model is described further.
Embodiment 1:
Fig. 1 is embodiment of the present utility model, the test unit schematic 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 the described panel point 2 to be tested of panel point 2(to be tested and comprise node chord member 3 and node web member 5) more than 1.5 times, obtain the effect that panel point to be tested 2 destroys so that warranty test is final.K shape panel point 2 to be tested is comprised of node chord member 3 and two node web members 5, is not subjected to the impact of rod end load for the node area that guarantees K shape panel point 2 to be tested, and 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, by 3 flanges 4 with are connected a flange 6 and connect: wherein node chord member 3 and device mobile jib 9 are bolted by flange 4, and node web member 5 bars and device pole 10 are bolted by flange 6; During connection, need by flange, Bolt to position, so that the dead in line of corresponding rod member in the rod member of node and the device, to guarantee the effective communication of truss member axle power.In the end of node chord member 3, arrange load on the chord sensor 7, in the end of node web member 5, arrange web member load transducer 8, test respectively it at the rod member internal force of 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 the load that obtains node-distortion, load-strain curves.
After the device installation, utilize lifting jack or MTS actuator, device top mobile jib 11 is applied the pressure load, by 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 is tested again.
Embodiment 2:
Fig. 2 is embodiment of the present utility model, the test unit schematic 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 that the described panel point 2 to be tested of panel point 2(to be tested comprises node chord member 3 and node web member 5) more than 1.5 times, obtain the effect that panel point to be tested 2 destroys so that warranty test is final.T shape panel point 2 to be tested is comprised of node chord member 3 and node web member 5, and both are mutually vertical, is not subjected to the impact of rod end load for the node area that guarantees T shape panel point 2 to be tested, and 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, by 3 flanges 4 with are connected a flange 6 and connect: wherein node chord member 3 and device mobile jib 9 are bolted by flange 4, and node web member 5 and device pole 10 are bolted by flange 6; During connection, need by flange, Bolt to position, so that the dead in line of corresponding rod member in the rod member of node and the device, to guarantee the effective communication of truss member axle power.In the end of node chord member 3, arrange load on the chord sensor 7, in the end of node web member 5, arrange web member load transducer 8, test respectively it at the rod member internal force of 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 the load that obtains node-distortion, load-strain curves.
After the device installation, utilize lifting jack or MTS actuator, device top mobile jib 11 is applied the pressure load, by 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 is tested again.
Embodiment 3:
Fig. 3 is embodiment of the present utility model, the test unit schematic 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, device 1 bar cross section strength and stiffness are that the described panel point 2 to be tested of panel point 2(to be tested comprises node chord member 3 and node web member 5) more than 1.5 times, obtain the effect that panel point to be tested 2 destroys so that warranty test is final.N shape panel point 2 to be tested is comprised of node chord member 3 and two node web members 5, is not subjected to the impact of rod end load for the node area that guarantees N shape panel point 2 to be tested, and 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, by 3 flanges 4 with are connected a flange 6 and connect: wherein node chord member 3 and device mobile jib 9 are bolted by flange 4, and node web member 5 and device pole 10 are bolted by flange 6; During connection, need by flange, Bolt to position, so that the dead in line of corresponding rod member in the rod member of node and the device, to guarantee the effective communication of truss member axle power.In the end of node chord member 3, arrange load on the chord sensor 7, in the end of node web member 5, arrange web member load transducer 8, test respectively it at the rod member internal force of 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 the load that obtains node-distortion, 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, by 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 is tested again.
Embodiment 4:
Fig. 4 is embodiment of the present utility model, the test unit schematic 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, device 1 bar cross section strength and stiffness are that the described panel point 2 to be tested of panel point 2(to be tested comprises node chord member 3 and node web member 5) more than 1.5 times, obtain the effect that panel point to be tested 2 destroys so that warranty test is final.KT shape panel point 2 to be tested is comprised of node chord member 3 and three node web members 5, is not subjected to the impact of rod end load for the node area that guarantees KT shape panel point 2 to be tested, and 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, by 3 flanges 4 with are connected a flange 6 and connect: wherein node chord member 3 and device mobile jib 9 are bolted by flange 4, and node web member 5 and device pole 10 are bolted by flange 6; During connection, need by flange, Bolt to position, so that the dead in line of corresponding rod member in the rod member of node and the device, to guarantee the effective communication of truss member axle power.In the end of node chord member 3, arrange load on the chord sensor 7, in the end of node web member 5, arrange web member load transducer 8, test respectively it at the rod member internal force of 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 the load that obtains node-distortion, 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, by 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 is tested again.
Claims (10)
1. a detachable Novel truss joint testing device is characterized in that, described detachable Novel truss joint testing device 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 6 by flange (4) with flange) connect: node chord member (3) and device mobile jib (9) are bolted by flange (4), and node web member (5) and device pole (10) are bolted by flange (6); During connection, by flange, Bolt to position, so that the dead in line of corresponding rod member in the rod member of node and the device;
Load on the chord sensor (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 truss joint testing device 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, for the real-time response data of the load that obtains node-distortion, load-strain curve.
3. detachable Novel truss joint testing device 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 truss joint testing device according to claim 1 is characterized in that, described panel point to be tested (2) is K shape, T shape, N shape, KT shape, Y shape or X-shaped.
5. detachable Novel truss joint testing device 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 truss joint testing device according to claim 1 is characterized in that, the xsect of described 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 truss joint testing device according to claim 1, it is characterized in that, the steel material that described 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 truss joint testing device 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 truss joint testing device 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 truss joint testing device 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 is tested again.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201220284842 CN202710335U (en) | 2012-06-14 | 2012-06-14 | Detachable novel truss node testing device |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201220284842 CN202710335U (en) | 2012-06-14 | 2012-06-14 | Detachable novel truss node testing device |
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| CN202710335U true CN202710335U (en) | 2013-01-30 |
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| CN 201220284842 Expired - Lifetime CN202710335U (en) | 2012-06-14 | 2012-06-14 | Detachable novel truss node testing device |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102706682A (en) * | 2012-06-14 | 2012-10-03 | 清华大学 | Detachable novel truss node testing device |
| CN106813885A (en) * | 2016-12-28 | 2017-06-09 | 武汉理工大学 | A kind of moving mass experimental rig and test method for simulating many arbitrary boundary conditions |
-
2012
- 2012-06-14 CN CN 201220284842 patent/CN202710335U/en not_active Expired - Lifetime
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102706682A (en) * | 2012-06-14 | 2012-10-03 | 清华大学 | Detachable novel truss node testing device |
| CN106813885A (en) * | 2016-12-28 | 2017-06-09 | 武汉理工大学 | A kind of moving mass experimental rig and test method for simulating many arbitrary boundary conditions |
| CN106813885B (en) * | 2016-12-28 | 2019-04-26 | 武汉理工大学 | A kind of the moving mass experimental rig and test method of a variety of boundary conditions of analog |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CX01 | Expiry of patent term | ||
| CX01 | Expiry of patent term |
Granted publication date: 20130130 |