A directional sliding hinge support for structural pseudo-static test and its assembling method

Abstract

The application relates to a directional sliding hinge support for structural pseudo-static test and an assembling method thereof, and the support comprises an upper connecting column, an ear plate-pin shaft assembly and a base. A pair of long circular hole-shaped upper half grooves are formed in the lower part of the upper connecting column, and a first hole is formed in the side surface of the upper connecting column. The ear plate-pin shaft assembly comprises a connecting plate, an ear plate, a pin shaft and an auxiliary pin shaft. A pin shaft hole is formed in the ear plate, and the tail part of the ear plate is connected with the connecting plate. The base comprises a lower connecting column and a first bottom plate. A pair of long circular hole-shaped lower half grooves are formed in the upper part of the lower connecting column, and a second hole is formed in the side surface of the base. The ear plate is arranged in the space formed by the second hole and the first hole, and the pin shaft is arranged in the space formed by the long circular hole-shaped lower half grooves and the long circular hole-shaped upper half grooves. Compared with the prior art, the application has the advantages of simple structure, clear force transmission path, low processing cost and adjustable test piece height while realizing the functions of releasing bending moment and horizontal displacement and restricting vertical displacement.

Description

TECHNICAL FIELD

[0001] The present application relates to the field of engineering structure dynamic test research, and particularly relates to a directional sliding hinge support for structure pseudo-static test and an assembling method thereof. BACKGROUND

[0002] In the test research on the seismic performance of building structures, the pseudo-static test can not only reflect the state evolution of a test piece from the initial loading to the failure state, but also has the advantages of simple requirement for loading equipment and low test cost compared with the shaking table test and the pseudo-dynamic test.

[0003] When the pseudo-static test on the seismic performance of the frame column, which is the key component of the most widely used frame structure, is performed, the lower end of the test piece column needs to be constrained, and a certain axial compression and gradually increasing reciprocating horizontal force need to be applied to the upper end of the test piece. In order to simulate the constraint of the beam on the column, a horizontal beam segment needs to be connected to the upper end of the column in the test, and a directional sliding hinge support close to the “inflexion point” needs to be constrained at the distal end of the beam.

[0004] When the pseudo-static test on the seismic performance of the beam-column joint of the frame structure is performed, a cross-shaped substructure is generally made, a fixed hinge support is used to constrain the lower end of the lower column, a directional sliding hinge support is used to constrain the end portions of the left and right horizontal beams, and a vertical compression and a gradually increasing horizontal reciprocating load are applied to the upper end of the upper column.

[0005] In addition to the above typical test scenarios, the equivalent constraint of the “directional sliding hinge support” at the end of the test component also often appears in the pseudo-static hysteretic test of components such as wall-beam substructures and haunch joint substructures. Overall, the “directional sliding hinge support” constraint is in great demand in the pseudo-static test of structures.

[0006] Specifically, the “directional sliding hinge support” aims to achieve the following three purposes: 1. releasing the bending moment constraint; 2. constraining the vertical displacement; and 3. releasing the horizontal displacement. The existing test method generally uses a directional sliding guide rail or a sliding vehicle in combination with a spherical hinge to achieve the directional sliding hinge support constraint at the end of the component. This method requires many specially processed parts, and the cost is relatively high. In addition, due to the variable height of the test piece, the sliding guide rail and the spherical hinge assembly need to be installed on a support assembly that is adapted to the height of the test piece, which further increases the difficulty of test design, assembly and loading.

[0007] Therefore, it is necessary to develop a new type of “directional sliding hinge support” structure to solve the problems of many specially processed parts, difficult installation and assembly, and high processing cost of the traditional structure. SUMMARY

[0008] The application aims to overcome the defects of the prior art and provide a directional sliding hinge support for structural pseudo-static test and an assembling method thereof.

[0009] The application aims to overcome the defects of the prior art and provide a directional sliding hinge support for structural pseudo-static test and an assembling method thereof.

[0010] The application provides a directional sliding hinge support for structural pseudo-static test, comprising an upper connecting column, an ear plate-pin shaft assembly and a base.

[0011] The upper connecting column is connected with the base, and the ear plate-pin shaft assembly is arranged between the upper connecting column and the base.

[0012] The upper connecting column is a hollow rectangular steel column, a pair of long circular hole-shaped upper half grooves are arranged in the lower part of the upper connecting column, and a first hole is arranged in the side surface of the upper connecting column, the size of the first hole being slightly larger than half of the length of the ear plate.

[0013] The ear plate-pin shaft assembly comprises a connecting plate, an ear plate, a pin shaft and an auxiliary pin shaft, a bolt hole is arranged in the connecting plate, and the connecting plate is used for connecting a beam-column joint or other test specimens; a pin shaft hole is arranged in the center position of the head of the ear plate, the size of the pin shaft hole being slightly larger than the pin shaft, so as to ensure complete release of the bending moment and the horizontal displacement, and the tail of the ear plate is connected with the connecting plate; the auxiliary pin shaft is used for leveling during installation of the support, and improves the accuracy of test results.

[0014] The base comprises a lower connecting column and a first bottom plate, a pair of long circular hole-shaped lower half grooves are arranged in the upper part of the lower connecting column, a second hole is arranged in the side surface of the base, the size of the second hole being the same as that of the first hole, the size of the long circular hole-shaped lower half grooves being the same as that of the long circular hole-shaped upper half grooves, the ear plate being arranged in the space formed by the second hole and the first hole, and the pin shaft being arranged in the space formed by the long circular hole-shaped lower half grooves and the long circular hole-shaped upper half grooves.

[0015] Further, a first cover plate and a second cover plate are arranged on the outer edge of the lower part of the upper connecting column, and a third cover plate is arranged on the inner edge of the lower part of the upper connecting column, for enhancing the overall rigidity; bolt holes are arranged in the first cover plate and the second cover plate.

[0016] Further, the first cover plate is a rectangular cover plate, the second cover plate is a U-shaped cover plate, and the third cover plate is a rectangular cover plate.

[0017] Further, a second bottom plate and a third bottom plate are arranged on the outer edge of the lower connecting column, and a fourth cover plate is arranged on the inner edge of the upper part of the lower connecting column, for enhancing the overall rigidity.

[0018] Further, the second bottom plate is a rectangular cover plate, the third bottom plate is a U-shaped cover plate, and the fourth cover plate is a rectangular cover plate.

[0019] Further, the second hole and the first hole are rectangular holes; the first bottom plate is a rectangular steel plate.

[0020] Further, the pin shaft and the auxiliary pin shaft are solid cylindrical steel pipes; the pin shaft and the auxiliary pin shaft have the same diameter, and the length of the auxiliary pin shaft is half of the width of the upper connecting column.

[0021] Further, the base further comprises stiffening plates, the stiffening plates are arranged on the first bottom plate, and the stiffening plates are welded with the lower connecting column and the first bottom plate; the stiffening plates are used to improve the overall stability of the base.

[0022] Further, the directional sliding hinge support further comprises a fastening-adjusting bolt group, the fastening-adjusting bolt group comprises a plurality of fastening-adjusting bolts, the fastening-adjusting bolts are arranged in the bolt holes, and the fastening-adjusting bolts comprise a screw rod and a gasket, an adjusting nut and a fastening nut arranged outside the screw rod.

[0023] The present application also provides an assembly method of the directional sliding hinge support for the structural pseudo-static test, comprising the following steps:

[0024] S1, the base is welded and assembled in advance in a factory, and is fixed through the reserved holes after being transported to a test site;

[0025] S2, the contact surface of the lug-axle assembly and the long-circular-hole-shaped lower half groove and the long-circular-hole-shaped upper half groove is coated with lubricating oil to form an oil film to reduce friction and ensure good sliding capacity of the support;

[0026] S3, the pin shaft of the lug-axle assembly is inserted through the lug reserved pin shaft hole, the pin shaft is placed in the middle position of the long-circular-hole-shaped lower half groove, and two auxiliary pin shafts with the same diameter as the pin shaft are placed in the space formed by the long-circular-hole-shaped lower half groove and the long-circular-hole-shaped upper half groove;

[0027] S4, the upper connecting column is installed, the screw rod of the fastening-adjusting bolt is sequentially inserted through the first cover plate, the second bottom plate, the gasket, the adjusting nut and the fastening nut (or sequentially inserted through the second cover plate, the third bottom plate, the gasket, the adjusting nut and the fastening nut), each adjusting nut and fastening nut is symmetrically tightened in sequence, and the auxiliary pin shaft is pulled out;

[0028] S5, the directional sliding hinge support is installed, and the pseudo-static loading test can be performed.

[0029] Compared with the prior art, the present application has the following advantages:

[0030] (1) When the frame column, a key component of the framework structure of the present application, is subjected to a pseudo-static test of seismic performance, a horizontal beam section is connected to the upper end of the column, and a directional sliding hinge support close to the "bending point" is constrained at the distal end of the beam, said new directional sliding hinge support using only simple steel structural parts, through the coordinated work of a long circular slot hole and an ear plate-pin shaft assembly, achieves the purpose of "releasing bending moment and horizontal displacement, and constraining vertical displacement", and realizes the accurate simulation of the "bending point" of the structure,

[0031] (2) The directional sliding hinge support for structural pseudo-static test disclosed by the present application adopts mechanical connection, the force transmission path is clear, the processing cost is low, and it can be adapted to test pieces of different heights, and is fast and convenient to install. It can be applied to pseudo-static hysteretic tests of components such as frame structures, wall-beam substructures, and haunch joint substructures. BRIEF DESCRIPTION OF DRAWINGS

[0032] Figure 1 is a schematic diagram of the directional sliding hinge support for structural pseudo-static test in the embodiment of the present application when it is assembled;

[0033] Figure 2 is a schematic diagram of the directional sliding hinge support for structural pseudo-static test in the embodiment of the present application when it is to be assembled;

[0034] Figure 3 is a schematic diagram of the upper connecting column in the embodiment of the present application;

[0035] Figure 4 is a cross-sectional view of the upper connecting column in the embodiment of the present application;

[0036] Figure 5 is a schematic diagram of the ear plate-pin shaft assembly in the embodiment of the present application;

[0037] Figure 6 is a schematic diagram of the base in the embodiment of the present application;

[0038] Figure 7 is a cross-sectional view of the base in the embodiment of the present application;

[0039] Figure 8 is a schematic diagram of the fastening adjusting bolt in the embodiment of the present application;

[0040] Figure 9 is a cross-sectional view of the fastening adjusting bolt in the embodiment of the present application.

[0041] Reference signs: 1, upper connecting column; 2, lug-pin shaft assembly; 3, base; 12, long-hole-shaped upper half groove; 13, first hole; 14, first cover plate; 15, second cover plate; 16, third cover plate; 21, connecting plate; 22, lug plate; 23, pin shaft; 24, auxiliary pin shaft; 31, lower connecting column; 32, first bottom plate; 33, stiffening plate; 311, long-hole-shaped lower half groove; 312, second hole; 313, second bottom plate; 314, third bottom plate; 315, fourth cover plate; 41, fastening adjusting bolt; 411, screw rod; 412, gasket; 413, adjusting nut; 414, fastening nut. DETAILED DESCRIPTION

[0042] The present application will be described in detail below with reference to the drawings and specific examples. In the technical solution, components, material names, connection structures, control methods, algorithms, and other features not explicitly described are considered to be common technical features disclosed in the prior art.

[0043] Example 1

[0044] The present embodiment provides a directional sliding hinge support for structural pseudo-static test, as shown in Figure 1 、 Figure 2 , comprising: an upper connecting column 1, a lug-pin shaft assembly 2, and a base 3.

[0045] The upper connecting column 1 is connected to the base 3, and the lug-pin shaft assembly 2 is arranged between the upper connecting column 1 and the base 3.

[0046] As shown in Figure 3 、 Figure 4 , the upper connecting column 1 is a hollow rectangular steel column, and a pair of long-hole-shaped upper half grooves 12 are formed in the lower part of the upper connecting column 1. First holes 13 are formed in the side surface of the upper connecting column 1, and the size of the first holes 13 is slightly larger than half the length of the lug plate 22.

[0047] As shown in Figure 5 , the lug-pin shaft assembly 2 comprises a connecting plate 21, a lug plate 22, a pin shaft 23, and an auxiliary pin shaft 24. The connecting plate 21 is provided with bolt holes, and is used to connect beam-column joints or other test specimens. A pin shaft hole is formed in the center of the head of the lug plate 22, and the size of the pin shaft hole is slightly larger than the pin shaft 23, so as to ensure complete release of the bending moment and horizontal displacement. The tail of the lug plate 22 is connected to the connecting plate 21. The auxiliary pin shaft 24 is used to level during installation of the support, thereby improving the accuracy of the test results.

[0048] As shown in Figure 6 、 Figure 7As shown, the base 3 comprises a lower connecting column 31, a first bottom plate 32; a pair of long circular hole-shaped lower half grooves 311 are opened in the upper part of the lower connecting column 31, a second hole 312 is opened in the side surface of the base 3, the size of the second hole 312 is the same as that of the first hole 13, the size of the long circular hole-shaped lower half groove 311 is the same as that of the long circular hole-shaped upper half groove 12, the lug plate 22 is arranged in the space formed by the second hole 312 and the first hole 13, and the pin shaft 23 is arranged in the space formed by the long circular hole-shaped lower half groove 311 and the long circular hole-shaped upper half groove 12.

[0049] In the specific embodiment, the outer edge of the lower part of the upper connecting column 1 is provided with a first cover plate 14 and a second cover plate 15, and the inner edge of the lower part of the upper connecting column 1 is provided with a third cover plate 16 for enhancing the overall rigidity; the first cover plate 14 and the second cover plate 15 are provided with bolt holes.

[0050] In the specific embodiment, the first cover plate 14 is a rectangular cover plate, the second cover plate 15 is a U-shaped cover plate, and the third cover plate 16 is a rectangular cover plate.

[0051] In the specific embodiment, the outer edge of the lower connecting column 31 is provided with a second bottom plate 313 and a third bottom plate 314, and the inner edge of the upper part of the lower connecting column 31 is provided with a fourth cover plate 315 for enhancing the overall rigidity.

[0052] In the specific embodiment, the second bottom plate 313 is a rectangular cover plate, the third bottom plate 314 is a U-shaped cover plate, and the fourth cover plate 315 is a rectangular cover plate.

[0053] In the specific embodiment, the second hole 312 and the first hole 13 are both rectangular holes; the first bottom plate 32 is a rectangular steel plate. According to the actual connection condition, corresponding bolt holes are opened in the first bottom plate 32.

[0054] In the specific embodiment, the pin shaft 23 and the auxiliary pin shaft 24 are both solid cylindrical steel pipes; the diameter of the pin shaft 23 is the same as that of the auxiliary pin shaft 24, and the length of the auxiliary pin shaft 24 is half the width of the upper connecting column 1.

[0055] In the specific embodiment, the base 3 further comprises a stiffener 33, the stiffener 33 is arranged on the first bottom plate 32, the stiffener 33 is welded with the lower connecting column 31 and the first bottom plate 32, and the stiffener 33 is used to improve the overall stability of the base 3.

[0056] As shown in Figure 8 , Figure 9 In the specific embodiment, the directional sliding hinge support further comprises a fastening-adjusting bolt group, the fastening-adjusting bolt group comprises a plurality of fastening-adjusting bolts 41, the fastening-adjusting bolts 41 are arranged in the bolt holes, and the fastening-adjusting bolts 41 comprise a screw rod 411 and a washer 412, an adjusting nut 413 and a fastening nut 414 arranged outside the screw rod 411.

[0057] The embodiment also provides an assembling method of the directional sliding hinge support for the structural pseudo-static test, comprising the following steps:

[0058] S1, the base 3 is welded and assembled in advance in a factory, and is fixed through the reserved hole after being transported to a test site;

[0059] S2, the contact surface of the lug plate-pin shaft assembly 2 and the long-circular-hole-shaped lower half groove 311 and the long-circular-hole-shaped upper half groove 12 is coated with lubricating oil to form an oil film to reduce friction and guarantee good sliding capacity of the support;

[0060] S3, the pin shaft 23 of the lug plate-pin shaft assembly 2 is inserted through the reserved pin shaft hole of the lug plate 22, the pin shaft 23 is placed in the middle position of the long-circular-hole-shaped lower half groove 311, and two auxiliary pin shafts 24 with the same diameter as the pin shaft 23 are placed in the space formed by the long-circular-hole-shaped lower half groove 311 and the long-circular-hole-shaped upper half groove 12;

[0061] S4, the upper connecting column 1 is installed, the screw rod 411 of the fastening adjusting bolt 41 is sequentially inserted through the first cover plate 14, the second bottom plate 313, the gasket 412, the adjusting nut 413 and the fastening nut 414 (or sequentially inserted through the second cover plate 15, the third bottom plate 314, the gasket 412, the adjusting nut 413 and the fastening nut 414), each adjusting nut 413 and fastening nut 414 is symmetrically and tightly screwed, and the auxiliary pin shaft 24 is pulled out;

[0062] S5, the directional sliding hinge support is installed, and the pseudo-static loading test can be performed.

[0063] Components not described in detail in the embodiment are existing components that can be purchased in a public channel.

[0064] The above description of the embodiments is for facilitating the ordinary skilled person in the technical field to understand and use the application. The person skilled in the art can obviously easily make various modifications to the embodiments, and apply the general principles described herein to other embodiments without having to go through creative labor. Therefore, the application is not limited to the above embodiments, and the improvements and modifications made by the person skilled in the art according to the disclosure of the application without departing from the scope of the application should be within the protection scope of the application.

Claims

1. A directional sliding hinge support for use in a quasi-static test of a structure, characterized by, The utility model relates to a kind of steel beam-column joint test device, including: Upper connecting column (1), ear plate-pin shaft assembly (2), pedestal (3); The upper connecting column (1) is connected with the pedestal (3), and the ear plate-pin shaft assembly (2) is arranged between the upper connecting column (1) and the pedestal (3); The upper connecting column (1) is a hollow rectangular steel column, a pair of long circular hole upper half grooves (12) are arranged in the lower part of the upper connecting column (1), and a first hole (13) is arranged in the side surface of the upper connecting column (1); The ear plate-pin shaft assembly (2) includes a connecting plate (21), an ear plate (22), a pin shaft (23) and an auxiliary pin shaft (24). A bolt hole is arranged in the connecting plate (21), and the connecting plate (21) is used to connect the beam-column joint. A pin shaft hole is arranged in the center of the head of the ear plate (22), and the tail of the ear plate (22) is connected with the connecting plate (21). The auxiliary pin shaft (24) is used to find the level when installing the support, so as to improve the accuracy of test results. The pedestal (3) includes a lower connecting column (31) and a first bottom plate (32). A pair of long circular hole lower half grooves (311) are arranged in the upper part of the lower connecting column (31), and a second hole (312) is arranged in the side surface of the pedestal (3). The ear plate (22) is arranged in the space formed by the second hole (312) and the first hole (13), and the pin shaft (23) is arranged in the space formed by the long circular hole lower half groove (311) and the long circular hole upper half groove (12).

2. A directional sliding hinge support for quasi-static testing of structures according to claim 1, characterized in that, First and second cover plates (14) and (15) are arranged on the outer edge of the lower part of the upper connecting column (1), and a third cover plate (16) is arranged on the inner edge of the lower part of the upper connecting column (1), so as to enhance the overall rigidity. Bolt holes are arranged in the first and second cover plates (14) and (15).

3. A directional sliding hinge for use in quasi-static testing of structures according to claim 2, characterized in that, The first cover plate (14) is a rectangular cover plate, the second cover plate (15) is a U-shaped cover plate, and the third cover plate (16) is a rectangular cover plate.

4. A directional sliding hinge support for quasi-static testing of structures according to claim 3, characterized in that, Second and third bottom plates (313) and (314) are arranged on the outer edge of the lower connecting column (31), and a fourth cover plate (315) is arranged on the inner edge of the upper part of the lower connecting column (31), so as to enhance the overall rigidity.

5. A directional sliding hinge for use in quasi-static testing of structures according to claim 4, characterized in that, The second bottom plate (313) is a rectangular cover plate, the third bottom plate (314) is a U-shaped cover plate, and the fourth cover plate (315) is a rectangular cover plate.

6. A directional sliding hinge support for quasi-static testing of structures according to claim 1, characterized in that, The second hole (312) and the first hole (13) are rectangular holes, and the first bottom plate (32) is a rectangular steel plate.

7. A directional sliding hinge support for quasi-static testing of structures according to claim 1, characterized in that, The pin shaft (23) and the auxiliary pin shaft (24) are both solid cylindrical steel pipes. The pin shaft (23) and the auxiliary pin shaft (24) have the same diameter, and the length of the auxiliary pin shaft (24) is half of the width of the upper connecting column (1).

8. A directional sliding hinge support for quasi-static testing of structures according to claim 1, characterized in that, The pedestal (3) further includes stiffening plates (33), which are arranged on the first bottom plate (32). The stiffening plates (33) are welded to the lower connecting column (31) and the first bottom plate (32), and are used to improve the overall stability of the pedestal (3).

9. A directional sliding hinge support for quasi-static testing of structures according to claim 4, characterized in that, The directional sliding hinge support further comprises a fastening-adjusting bolt group, which comprises a plurality of fastening-adjusting bolts (41) arranged in bolt holes, and the fastening-adjusting bolts (41) comprise a screw rod (411) and a gasket (412) arranged outside the screw rod (411), an adjusting nut (413) and a fastening nut (414).

10. A method of assembling a directional sliding hinge support for quasi-static testing of structures as claimed in claim 9, characterised in that, The method comprises the following steps: S1, the base (3) is welded and assembled in advance in the factory, and is fixed through the reserved hole after being transported to the test site; S2, the contact surface of the lug-pin shaft assembly (2) and the long-circular-hole-shaped lower half groove (311) and the long-circular-hole-shaped upper half groove (12) is coated with lubricating oil to form an oil film to reduce friction and ensure good sliding capacity of the support; S3, the pin shaft (23) of the lug-pin shaft assembly (2) is inserted through the reserved pin shaft hole of the lug (22), the pin shaft (23) is placed in the middle position of the long-circular-hole-shaped lower half groove (311), and two auxiliary pin shafts (24) with the same diameter as the pin shaft (23) are placed in the space formed by the long-circular-hole-shaped lower half groove (311) and the long-circular-hole-shaped upper half groove (12); S4, the upper connecting column (1) is installed, the screw rod (411) of the fastening-adjusting bolt (41) is sequentially inserted through the first cover plate (14), the second bottom plate (313), the gasket (412), the adjusting nut (413) and the fastening nut (414), each adjusting nut (413) and fastening nut (414) is symmetrically tightened in sequence, and the auxiliary pin shaft (24) is pulled out; S5, the directional sliding hinge support is installed and can be subjected to pseudo-static loading test.

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