CN113640098B - Semi-rigid node test device with adjustable rigidity - Google Patents
Semi-rigid node test device with adjustable rigidity Download PDFInfo
- Publication number
- CN113640098B CN113640098B CN202110881632.3A CN202110881632A CN113640098B CN 113640098 B CN113640098 B CN 113640098B CN 202110881632 A CN202110881632 A CN 202110881632A CN 113640098 B CN113640098 B CN 113640098B
- Authority
- CN
- China
- Prior art keywords
- plate
- component
- test
- constraint
- loading
- 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.)
- Active
Links
Classifications
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N3/00—Investigating strength properties of solid materials by application of mechanical stress
- G01N3/02—Details
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N3/00—Investigating strength properties of solid materials by application of mechanical stress
- G01N3/08—Investigating strength properties of solid materials by application of mechanical stress by applying steady tensile or compressive forces
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N2203/00—Investigating strength properties of solid materials by application of mechanical stress
- G01N2203/0001—Type of application of the stress
- G01N2203/0003—Steady
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N2203/00—Investigating strength properties of solid materials by application of mechanical stress
- G01N2203/0014—Type of force applied
- G01N2203/0016—Tensile or compressive
- G01N2203/0019—Compressive
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N2203/00—Investigating strength properties of solid materials by application of mechanical stress
- G01N2203/003—Generation of the force
- G01N2203/0032—Generation of the force using mechanical means
Abstract
The invention relates to the technical field of transmission line tower tests, and aims to solve the problem that the existing test device can not simulate the condition that nodes at two ends of a test member are restrained by a hinge of a knife edge to simulate the hinge device at two ends of the test member; each test assembly comprises a loading part and a connecting part, wherein the loading part is hinged with the connecting part, and the loading part can transmit load to the test component through the connecting part; a constraint component is arranged between the loading component and the connecting component, and the constraint rigidity of the constraint component can be adjusted; the beneficial effects are that: due to the constraint action of the constraint component, the rotation of the connecting component is limited, so that the deformation of the test component is restrained in turn, the actual constraint condition of the node can be matched by adjusting the constraint rigidity of the constraint component, and the effective simulation of the semi-rigid support is realized.
Description
Technical Field
The invention relates to the technical field of transmission line tower tests, in particular to a semi-rigid node test device with adjustable rigidity.
Background
The transmission tower structure test is an important means for checking and verifying the overall mechanical property and structural rationality of the tower and guiding the structural optimization design of the tower. The existing test device simulates the hinging devices at two ends of a test member through a knife edge hinge, applies load to a hinged support above the hinging device, and further tests the performance of the test member, but because the angle of the knife edge hinge cannot be constrained, free deflection can occur after the test member is pressed and deformed, namely, the nodes at two ends of the test member have no constraint force, which is not in accordance with the actual stress condition of an iron tower, so that the device cannot simulate the condition that the nodes at two ends of the test member have constraint.
Disclosure of Invention
The invention aims to provide a semi-rigid node test device with adjustable rigidity, which aims to solve the problems that the existing test device simulates the hinging device at two ends of a test member through a knife edge hinge, but the free deflection can occur without constraint after the test member is pressed and deformed and is not consistent with the actual stress condition of an iron tower because the knife edge hinge angle cannot be constrained, so that the device cannot simulate the condition that the nodes at two ends of the test member are constrained.
Embodiments of the present invention are implemented as follows:
a semi-rigid node test device with adjustable rigidity comprises two test assemblies which are oppositely arranged, wherein a test member is arranged between the two test assemblies;
each of the test assemblies comprises a loading member and a connecting member, the loading member being hinged to the connecting member, the loading member being capable of transmitting a load to the test member through the connecting member;
and a constraint component is arranged between the loading component and the connecting component, and the constraint rigidity of the constraint component can be adjusted.
Through exerting relative effort to two loading parts for middle test component is pressed and is out of shape, because loading part with connecting piece articulates, consequently can drive the connecting piece that links to each other with it and take place to rotate after the test component warp, but because the restriction effect of restriction part, lead to the connecting piece to rotate and receive the restriction, thereby the deformation of constraint test component in turn, moreover restriction rigidity of restriction part can adjust, consequently can match according to the actual constraint condition of node, has realized the effective simulation of semi-rigid support, accords with iron tower actual stress condition more.
In one embodiment:
the restraining component is an elastic structural component.
The elastic structural member has elasticity and restoring force, can limit the rotation degree of the connecting component to a certain extent, can also restore to an initial state, and can be used for multiple tests on different structural members.
In one embodiment:
the loading part is provided with a knife edge, the connecting part is provided with a knife slot, the knife slot is matched with the knife edge, and the knife edge can freely rotate in the knife slot.
The loading part is hinged with the connecting part through rotatable connection of the knife edge and the knife slot, the knife edge can rotate freely in the knife slot, the angle of the knife edge can change freely, and the connecting part connected with the loading part is convenient to rotate after the adaptation test component is deformed.
In one embodiment:
the loading part comprises a first plate arranged horizontally and a second plate arranged vertically, the second plate is fixedly connected to the first plate, and the knife edge is arranged at the end part of the second plate.
In one embodiment:
the connecting part comprises a plate III which is horizontally arranged and a plate IV which is vertically arranged, the plate IV is fixedly connected to the plate III, the knife slot is formed in the surface of the plate III, and the knife edge can rotate in the knife slot to change the angle between the plate II and the plate III.
The knife edge at the two ends of the plate is matched with the knife groove on the three surfaces of the plate, so that the knife edge can rotate freely in the knife groove, and specifically, the rotation means that the knife edge is always positioned in the knife groove, but the second plate can deflect left and right relative to the third plate, the angle between the second plate and the third plate is changed, and the two plates are hinged.
In one embodiment:
the hinging mode of the loading component and the connecting component is not limited to the mode that the knife edge is matched with the knife slot, and other structures capable of realizing angle change of the loading component and the connecting component can be adopted.
In one embodiment:
the second plate and the fourth plate are positioned in the same vertical plane.
The two are on the same vertical surface, so that the two plates and the three plates can rotate conveniently when the four plates are shifted along with the test member.
In one embodiment:
the test member is fixedly attached to the fourth plate.
In one embodiment:
and the fourth plate is connected with the test member through bolts.
In one embodiment:
the section of the knife groove is V-shaped.
The knife edge can rotate in the knife slot conveniently.
In one embodiment:
the length of the knife slot is determined according to the contact length of the second plate and the third plate, and the length of the knife slot is slightly larger than the contact length.
So as to completely accommodate the knife edge.
In one embodiment:
the second plate is fixedly connected to the middle position of the first plate, and the first plate and the second plate form a T-shaped structure;
the third plate and the fourth plate form a T-shaped structure.
The whole structure is symmetrical, the structural stability is good, and the force transmission is clear.
In one embodiment:
the restraining part comprises a plurality of restraining units which are uniformly arranged on two sides of the second plate.
The plurality of constraint units act together and are uniformly distributed, so that the constraint rigidity of each part is uniform.
In one embodiment:
the restraining unit is a spring.
The springs are arranged between the first plate and the third plate, are elastic, can stretch and recover within limits, are fixed at different positions on the first plate and the third plate, or adopt springs with different rigidities, or select springs with different numbers, and can adjust the rigidity of the constraint component for being applicable to different conditions.
In one embodiment:
the spring is arranged in the following mode: the expansion direction of the spring is perpendicular to the plate surfaces of the first plate and the third plate.
In one embodiment:
two sides of the second plate are respectively provided with a group of springs, and the number of each group of springs is 3-5.
In one embodiment:
the constraint unit is detachably connected or fixedly connected with the first plate and the third plate.
In one embodiment:
and two ends of the constraint unit are respectively welded with the first plate and the third plate.
In one embodiment:
and two ends of the constraint unit are respectively connected with the first plate and the third plate by adopting a buckling rod and a screw rod.
In one embodiment:
the screw rod passes through the first plate, the buckling rod is provided with a bolt hole, the bolt hole is matched with the screw rod, the buckling rod is connected to one end of the screw rod, and the constraint component is clamped on the bottom surface of the first plate by the buckling rod, so that the constraint component is connected to the first plate;
the third plate is connected with the constraint component in the same principle.
In one embodiment:
one end of the loading component is provided with a power component for providing pressure or thrust.
In one embodiment:
the power component is a jack.
In one embodiment:
a gasket is arranged between the loading component and the power component.
Avoiding damage to the loading element.
In summary, due to the adoption of the technical scheme, the beneficial effects of the invention are as follows:
through exerting relative effort to two loading parts for middle test component is pressed and is out of shape, because loading part with connecting piece articulates, consequently can drive the connecting piece that links to each other with it and take place to rotate after the test component warp, but because the restriction effect of restriction part, lead to the connecting piece to rotate and receive the restriction, thereby the deformation of constraint test component in turn, moreover restriction rigidity of restriction part can adjust, consequently can match according to the actual constraint condition of node, has realized the effective simulation of semi-rigid support, accords with iron tower actual stress condition more.
Drawings
FIG. 1 is a front view of a stiffness adjustable semi-rigid joint test apparatus according to the present invention.
FIG. 2 is a side view of a stiffness adjustable semi-rigid joint test apparatus according to the present invention.
Icon: 1-loading a part; 11-plate one; 12-plate two; 2-connecting parts; 13-plate three; 14-plate four; 3-restraining means; 41-knife edge; 42-knife groove; 5-test member; 6-a power component; 7-a gasket; 81-screw; 82-buckling rod; 9-bolt.
Detailed Description
For the purpose of making the objects, technical solutions and advantages of the embodiments of the present invention more apparent, the technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings, and it is apparent that the described embodiments are some embodiments of the present invention, but not all embodiments. All other embodiments, which can be made by those skilled in the art based on the embodiments of the invention without making any inventive effort, are intended to be within the scope of the invention.
Example 1
Referring to fig. 1-2, this embodiment proposes a stiffness-adjustable semi-rigid node test apparatus comprising two test assemblies disposed opposite each other, between which a test member 5 is mounted, the two test assemblies being disposed one above the other.
The test assembly located above comprises a loading part 1 and a connecting part 2, wherein the loading part 1 is hinged with the connecting part 2, and the loading part 1 can transmit load to a test component 5 through the connecting part 2.
The loading part 1 comprises a first plate 11 which is horizontally arranged and a second plate 12 which is vertically arranged, the second plate 12 is fixedly connected to the middle position below the first plate 11, and the first plate 11 and the second plate 12 form a T-shaped structure.
The connecting part 2 comprises a plate III 13 which is horizontally arranged and a plate IV 14 which is vertically arranged, the plate IV 14 is fixedly connected to the middle position below the plate III 13, and the plate III 13 and the plate IV 14 form a T-shaped structure.
Specifically, the second plate 12 and the fourth plate 14 are located in the same vertical plane, and the test member 5 is fixedly connected to the side surface of the fourth plate 14 through a bolt 9.
The end of the second plate 12 is provided with a knife edge 41, the top surface of the third plate 13 is provided with a knife slot 42, the knife slot 42 is matched with the knife edge 41, the knife edge 41 can freely rotate in the knife slot 42, and the angle between the second plate 12 and the third plate 13 is changed.
In this embodiment, the cross section of the knife slot 42 is V-shaped, and the V-shaped opening has an angle of 120 ° -150 °, which is convenient for the deflection of the second plate 12, the knife edge 41 freely deflects in the knife slot 42, and some lubricating substances, such as butter, can be coated in the knife slot 42, so as to reduce the friction between the two materials, and facilitate the rotation of the knife edge 41.
In this embodiment, the end of the second plate 12 is provided with two inclined planes, the two inclined planes form a cone shape, and the convex conical surface just can be clamped into the V-shaped knife slot 42, but the included angle of the cone shape is smaller than that of the V-shaped knife slot 42, otherwise, the second plate 12 is not convenient to rotate.
In addition, the length of the knife slot 42 is determined according to the contact length between the second plate 12 and the third plate 13, and the length of the knife slot 42 is slightly greater than the contact length, so as to completely accommodate the knife edge 41.
A constraint component 3 is arranged between the loading component 1 and the connecting component 2, and the constraint rigidity of the constraint component 3 can be adjusted. Specifically, the constraint component 3 is disposed between the first plate 11 and the third plate 13, and the constraint component 3 is an elastic structural member, and the elastic structural member has elastic force and restoring force.
Specifically, the restraining component 3 comprises two groups of springs, the number of the springs in each group of springs is 3-5, and the two groups of springs are arranged on two sides of the second plate 12. The expansion and contraction direction of each spring is perpendicular to the plate surfaces of the first plate 11 and the third plate 13, and each spring is detachably connected with the first plate 11 and the third plate 13. Specifically, one end of the spring is connected to the first plate 11, the other end of the spring is connected to the third plate 13, a hole matched with the screw 81 is formed in the surface of the first plate 11, the screw 81 penetrates through the first plate 11, a buckling rod 82 is installed at one end of the screw 81, a bolt hole is formed in the buckling rod 82 and used for being connected with the screw 81, and the buckling rod 82 clamps a part of the spring to the bottom surface of the first plate 11, so that a connection relationship between the spring and the first plate 11 is established.
The connection between the spring and the third plate 13 is as above.
The above specifically describes the specific structure of the test assembly located above, the structure of the test assembly located below is the same as that of the test assembly located below, but the direction is exactly opposite to that of the test assembly located below, specifically, the T-shaped structure formed by the first plate 11 and the second plate 12, and the T-shaped structure formed by the third plate 13 and the fourth plate 14 are equivalent to 180 ° rotation, that is, the structure of the semi-rigid node test device in this embodiment is symmetrical, the fourth plate 14 of the two is closest, the test member 5 is fixed between the fourth plates 14, in the test assembly located below, the first plate 11 is located below the third plate 13, the knife edge 41 of the second plate 12 is still disposed at the end portion thereof, the knife slot 42 is disposed on the bottom surface of the third plate 13, and the knife edge 41 and the knife slot 42 still cooperate with each other.
The end faces of the two first plates 11 are respectively provided with a power component 6 for providing pressure or thrust, and a gasket 7 is arranged between the first plates 11 and the power components 6 to avoid damaging the first plates 11, and in the embodiment, the power components 6 are jacks, and other power-providing devices can be selected according to actual conditions.
When the test device is used, the test component 5 is fixed on the two plates IV 14 through the bolts 9, the power component 6 is started, the power component 6 positioned above applies pressure, the power component 6 positioned below applies thrust, the test component 5 is extruded from two directions, the test component 5 is pressed and deformed to drive the plates IV 14 connected with the test component 5 to rotate, and the plates III 13 and IV 14 are connected with each other, so that the plates III 13 and IV 14 rotate along with the rotation, the knife edge 41 rotates in the knife groove 42, the included angle of the plate faces between the plates III 13 and IV 12 changes, but the angle is limited by the spring, the rotation of the plates III 13 and IV 14 is limited, and the deformation of the test component 5 is limited in turn.
Regarding the constraint stiffness of the adjusting constraint component 3, the springs can be fixed at different positions on the first plate 11 and the third plate 13, the distance between the springs and the second plate 12 is changed, or the springs with different stiffness are adopted, or the springs with different numbers are selected, so that the stiffness of the constraint component 3 can be adjusted, the matching can be carried out according to the actual constraint condition of the node, the effective simulation of the semi-rigid support is realized, and the actual stress condition of the iron tower is more met.
Example 2
This embodiment differs from embodiment 1 in that: the restraint unit is fixedly connected with the first plate 11 and the third plate 13, specifically, one end of the spring is welded and fixed on the first plate 11, and the other end of the spring is welded and fixed on the third plate 13.
The above description is only of the preferred embodiments of the present invention and is not intended to limit the present invention, but various modifications and variations can be made to the present invention by those skilled in the art. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the present invention should be included in the protection scope of the present invention.
Claims (8)
1. A semi-rigid node test device with adjustable rigidity is characterized in that:
comprises two test assemblies which are arranged oppositely, wherein a test component (5) is arranged between the two test assemblies;
each test assembly comprises a loading part (1) and a connecting part (2), wherein the loading part (1) is hinged with the connecting part (2), and the loading part (1) can transmit load to the test component (5) through the connecting part (2);
a constraint component (3) is arranged between the loading component (1) and the connecting component (2), and the constraint rigidity of the constraint component (3) can be adjusted;
the constraint component (3) is an elastic structural member;
the loading component (1) is provided with a knife edge (41), the connecting component (2) is provided with a knife slot (42), the knife slot (42) is matched with the knife edge (41), and the knife edge (41) can freely rotate in the knife slot (42).
2. The stiffness-adjustable semi-rigid joint test device of claim 1, wherein:
the loading component (1) comprises a first plate (11) which is horizontally arranged and a second plate (12) which is vertically arranged, the second plate (12) is fixedly connected to the first plate (11), and the knife edge (41) is arranged at the end part of the second plate (12).
3. The stiffness-adjustable semi-rigid joint testing device of claim 2, wherein:
the connecting component (2) comprises a plate III (13) which is horizontally arranged and a plate IV (14) which is vertically arranged, the plate IV (14) is fixedly connected to the plate III (13), the knife slot (42) is formed in the surface of the plate III (13), and the knife edge (41) can rotate in the knife slot (42) to change the angle between the plate II (12) and the plate III (13).
4. A stiffness adjustable semi-rigid joint testing device according to claim 3, wherein:
the second plate (12) is fixedly connected to the middle position of the first plate (11), and the first plate (11) and the second plate (12) form a T-shaped structure;
the plate IV (14) is fixedly connected to the middle position of the plate III (13), and the plate III (13) and the plate IV (14) form a T-shaped structure.
5. A stiffness adjustable semi-rigid joint testing device according to claim 3, wherein:
the restraining member (3) includes a plurality of restraining units that are uniformly disposed on both sides of the second plate (12).
6. The stiffness-adjustable semi-rigid joint testing device of claim 5, wherein:
the constraint unit is detachably connected or fixedly connected with the first plate (11) and the third plate (13).
7. The stiffness adjustable semi-rigid node test device of any of claims 1-6, wherein:
one end of the loading component (1) is provided with a power component (6) for providing pressure or thrust.
8. The stiffness-adjustable semi-rigid joint test device of claim 7, wherein:
a gasket (7) is arranged between the loading component (1) and the power component (6).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202110881632.3A CN113640098B (en) | 2021-08-02 | 2021-08-02 | Semi-rigid node test device with adjustable rigidity |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202110881632.3A CN113640098B (en) | 2021-08-02 | 2021-08-02 | Semi-rigid node test device with adjustable rigidity |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN113640098A CN113640098A (en) | 2021-11-12 |
| CN113640098B true CN113640098B (en) | 2023-10-03 |
Family
ID=78419348
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202110881632.3A Active CN113640098B (en) | 2021-08-02 | 2021-08-02 | Semi-rigid node test device with adjustable rigidity |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN113640098B (en) |
Citations (18)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| SU1545142A1 (en) * | 1984-06-08 | 1990-02-23 | Московский Автомобильно-Дорожный Институт | Apparatus for determining stressed-strained state of specimen in eccentric compression |
| KR20030001616A (en) * | 2001-06-25 | 2003-01-08 | 현대자동차주식회사 | Outside panel testing device of vehicle |
| JP3124290U (en) * | 2006-06-02 | 2006-08-10 | 株式会社島津製作所 | Load jig |
| CN201673091U (en) * | 2010-05-19 | 2010-12-15 | 华侨大学 | Auxiliary loading device for compressed column test |
| CN103712850A (en) * | 2014-01-01 | 2014-04-09 | 浙江建设职业技术学院 | Scissor type loading positioning device for column and a loading positioning method |
| JP2014085250A (en) * | 2012-10-24 | 2014-05-12 | Nippon Steel & Sumitomo Metal | Collision performance evaluation method of compression bent part |
| CN103837413A (en) * | 2014-03-07 | 2014-06-04 | 中南大学 | Concrete tensile creep testing device and concrete shrinkage stress creep testing method |
| CN104344789A (en) * | 2013-07-23 | 2015-02-11 | 国家电网公司 | System and method for monitoring member deflection in bearing capacity test |
| CN104344993A (en) * | 2013-07-23 | 2015-02-11 | 国家电网公司 | Method for testing and measuring member bearing capacity and material performance parameters |
| CN104865138A (en) * | 2015-05-20 | 2015-08-26 | 浙江吉利汽车研究院有限公司 | Device for measuring mechanical property of test piece |
| CN105115706A (en) * | 2015-07-17 | 2015-12-02 | 河海大学 | Axial compression test spherical hinge support and using method thereof |
| CN207066755U (en) * | 2016-08-31 | 2018-03-02 | 中南大学 | The experimental rig of tunnel bottom structure accumulated damage under a kind of cyclic load |
| CN109186980A (en) * | 2018-09-17 | 2019-01-11 | 南京林业大学 | A kind of one-way eccentric loading device of continuously adjustable examination |
| JP2020085710A (en) * | 2018-11-28 | 2020-06-04 | 日本製鉄株式会社 | Compression bending tester and compression bending test method |
| CN111982483A (en) * | 2020-08-19 | 2020-11-24 | 中国航空工业集团公司沈阳飞机设计研究所 | Axial compression loading reversing device with initial curvature eccentric test piece |
| CN212379183U (en) * | 2020-08-13 | 2021-01-19 | 广东工业大学 | Adjustable loading device for concrete column axial compression and bias test |
| KR102247624B1 (en) * | 2020-11-23 | 2021-04-30 | 인천대학교 산학협력단 | Pile test device and pile test method capable of simulating ground deformation |
| CN112982475A (en) * | 2021-03-04 | 2021-06-18 | 衡水衡源电力建设有限责任公司 | Auxiliary mounting tool for prefabricated foundation of power transmission line |
-
2021
- 2021-08-02 CN CN202110881632.3A patent/CN113640098B/en active Active
Patent Citations (18)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| SU1545142A1 (en) * | 1984-06-08 | 1990-02-23 | Московский Автомобильно-Дорожный Институт | Apparatus for determining stressed-strained state of specimen in eccentric compression |
| KR20030001616A (en) * | 2001-06-25 | 2003-01-08 | 현대자동차주식회사 | Outside panel testing device of vehicle |
| JP3124290U (en) * | 2006-06-02 | 2006-08-10 | 株式会社島津製作所 | Load jig |
| CN201673091U (en) * | 2010-05-19 | 2010-12-15 | 华侨大学 | Auxiliary loading device for compressed column test |
| JP2014085250A (en) * | 2012-10-24 | 2014-05-12 | Nippon Steel & Sumitomo Metal | Collision performance evaluation method of compression bent part |
| CN104344789A (en) * | 2013-07-23 | 2015-02-11 | 国家电网公司 | System and method for monitoring member deflection in bearing capacity test |
| CN104344993A (en) * | 2013-07-23 | 2015-02-11 | 国家电网公司 | Method for testing and measuring member bearing capacity and material performance parameters |
| CN103712850A (en) * | 2014-01-01 | 2014-04-09 | 浙江建设职业技术学院 | Scissor type loading positioning device for column and a loading positioning method |
| CN103837413A (en) * | 2014-03-07 | 2014-06-04 | 中南大学 | Concrete tensile creep testing device and concrete shrinkage stress creep testing method |
| CN104865138A (en) * | 2015-05-20 | 2015-08-26 | 浙江吉利汽车研究院有限公司 | Device for measuring mechanical property of test piece |
| CN105115706A (en) * | 2015-07-17 | 2015-12-02 | 河海大学 | Axial compression test spherical hinge support and using method thereof |
| CN207066755U (en) * | 2016-08-31 | 2018-03-02 | 中南大学 | The experimental rig of tunnel bottom structure accumulated damage under a kind of cyclic load |
| CN109186980A (en) * | 2018-09-17 | 2019-01-11 | 南京林业大学 | A kind of one-way eccentric loading device of continuously adjustable examination |
| JP2020085710A (en) * | 2018-11-28 | 2020-06-04 | 日本製鉄株式会社 | Compression bending tester and compression bending test method |
| CN212379183U (en) * | 2020-08-13 | 2021-01-19 | 广东工业大学 | Adjustable loading device for concrete column axial compression and bias test |
| CN111982483A (en) * | 2020-08-19 | 2020-11-24 | 中国航空工业集团公司沈阳飞机设计研究所 | Axial compression loading reversing device with initial curvature eccentric test piece |
| KR102247624B1 (en) * | 2020-11-23 | 2021-04-30 | 인천대학교 산학협력단 | Pile test device and pile test method capable of simulating ground deformation |
| CN112982475A (en) * | 2021-03-04 | 2021-06-18 | 衡水衡源电力建设有限责任公司 | Auxiliary mounting tool for prefabricated foundation of power transmission line |
Also Published As
| Publication number | Publication date |
|---|---|
| CN113640098A (en) | 2021-11-12 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| US2271935A (en) | Vibration damper | |
| US20150048234A1 (en) | Vibration-Insulating Device and System | |
| KR101879158B1 (en) | Seismic connector device for coupling cable tray | |
| JP2019530841A (en) | Tower vibration control device | |
| KR101995847B1 (en) | Seismic connector device for coupling cable tray | |
| CN113640098B (en) | Semi-rigid node test device with adjustable rigidity | |
| CN106320561A (en) | Quadrilateral pivoting friction damper | |
| CA3081471C (en) | A device for structural testing | |
| CN112095833A (en) | Variable-rigidity friction damper | |
| KR870001184B1 (en) | Energy absorbing apparatus for piping system and the like | |
| CN209831693U (en) | Rope drives flexible mechanical joint of spring | |
| CN115371989B (en) | Variable supporting rigidity simulation structure of shaft coupling rotor | |
| CN204718900U (en) | The pure bending performance test apparatus of beam | |
| KR20140117052A (en) | Earthquake isolation system against vertical negative reaction | |
| CN112683651B (en) | Pre-tightening force loading unit and device of heat exchange tube | |
| CN107643155B (en) | Hydraulic spherical connector with retaining mechanism | |
| CN210827904U (en) | Viscous damper and mounting structure thereof | |
| KR102158342B1 (en) | Earthquake protection system | |
| TWI706095B (en) | Geometrically nonlinear isolation system | |
| KR102077591B1 (en) | Anti-buckling device reducing frictional resistance for thin fatigue test pieces | |
| CN111929381A (en) | Portable gas chromatography device for dissolving gas in full-automatic insulating oil | |
| KR101604740B1 (en) | Hybrid seismic control apparatus using strain control plate and friction plate and the seismic reinforcement structure construction method therewith | |
| RU2015152565A (en) | SEISMICALLY FIXED PIPELINE SUPPORT, ASSEMBLY OF PIPELINE COIL AND CONNECTOR WITH PIPE SUPPORT FOR SEISMICALLY PERMANENT PIPELINE SUPPORT AND LONG DRAWBAR SUSPENSION | |
| CN213779701U (en) | Pre-tightening force loading unit and device of heat exchange tube | |
| KR102403317B1 (en) | Bending Fatigue Test Device For Cable |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PB01 | Publication | ||
| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| GR01 | Patent grant | ||
| GR01 | Patent grant |