CN219369353U - Beam structure bending shear test loading support - Google Patents

Abstract

The utility model provides a beam structure bending shear test loading support which comprises two bases and two parallel and horizontally arranged rollers for supporting two ends of a beam structure, wherein the upper end face of each base is detachably connected with two limit strips, the length direction of each limit strip is parallel to the axis of the roller, a spacing area for accommodating the roller is formed between the two limit strips on the same base, the limit strips are attached to the peripheral wall surface of the roller to form a horizontal limit for the roller, a hinged support structure is formed when the two limit strips are attached to the roller, and a rolling support structure is formed when the two limit strips are detached. The hinge support structure and the rolling support structure are switched through the disassembly and assembly of the limiting strips, and when the limiting strips are attached to the rollers to form horizontal limiting, the rollers cannot roll to generate horizontal displacement and can only rotate, so that the hinge support structure is formed.

Description

Beam structure bending shear test loading support

Technical Field

The utility model relates to the technical field of bending shear test loading, in particular to a beam structure bending shear test loading support.

Background

In engineering, bridges, pipe gallery structures, cable pit structures and the like can be simplified into beam structures, and bending or shearing damage is often caused under the action of complex stress. Therefore, the bending shear resistance has great influence on the reliability of the beam structure, so that bending shear loading test is required to be carried out on the beam member, the beam member is required to be placed on a loading support during bending shear loading, destructive test is carried out on the beam member, the structural performance, the stress characteristics and the destruction form of the beam member are researched, and the reliability of the structure is ensured.

In the beam structure bending test, in order to prevent the structure from moving horizontally, a simple support is often used as a loading support, namely, one end is a hinged support, and the other end is a rolling support. However, most girder type structure loading test supports at present cannot realize ideal simple support, accuracy of test results is difficult to guarantee, and in girder type structure shear test, additional supports are required to be designed and processed, so that resource waste and unnecessary cost are caused. Therefore, how to design a loading support for the beam structure bending test on the premise of ensuring that the loading support is an ideal simple support and ensuring that the loading support is also suitable for the beam structure shear test is a technical problem to be solved by the person skilled in the art.

Chinese patent CN104359764a discloses a secondary stress loading test device convenient for structure load-holding reinforcement, and its scheme is: the test device comprises a base fixedly connected with the rigid ground, wherein bearing frames are arranged on two sides of the base, a support is arranged on the lower portion of each bearing frame, the support is fixedly connected with the rigid ground, a cross beam parallel to the rigid ground is arranged on each bearing frame, a jack is hung on the cross beam in an inverted mode, the jack is perpendicular to the rigid ground, a force sensor is arranged on the jack, a test beam is arranged between the jack and the base, and the test beam is hinged to the jack and the base. The test beam can be applied to initial load through the loading device, and can be used for bending and shearing reinforcement tests of reinforced concrete beam components. However, the position and state of the support are fixed during the use, so that the test can only be performed, the beam structure is generally heavy and large in size, the direction is difficult to turn in a laboratory environment, and the beam structure needs to be turned once the beam structure needs to be turned to the hinge support structure and the rolling support to perform the test, so that the whole process is time-consuming and labor-consuming, and potential safety hazards exist.

Disclosure of Invention

The utility model aims to provide a beam structure bending shear test loading support which can be switched between a hinged support structure and a rolling support structure, and the two ends of the beam structure are prevented from being turned by corresponding to the position of the beam structure in a structure switching mode.

In order to achieve the technical purpose, the utility model adopts the following technical scheme:

the utility model provides a beam structure bending shear test loading support, includes two bases and two parallel and flat roller that is used for supporting beam structure both ends that puts each other, and the up end dismantlement of every base is connected with two spacing, the length direction of spacing is on a parallel with the axle center of roller, same two on the base form the interval that is used for holding the roller between the spacing, spacing is laminated with the perisporium of roller in order to constitute the level to spacing to the roller, forms hinge support structure when two spacing make it laminate with the roller when installing, forms rolling support structure when demolising two spacing. The rollers can also be removed and then used as a beam structure connection node shear test stand in the present application.

In the scheme, the hinge support structure and the rolling support structure are switched through the disassembly and assembly of the limiting strips, and when the limiting strips and the rollers are attached to form horizontal limiting, the rollers cannot roll to generate horizontal displacement and can only rotate, so that the hinge support structure is formed. When the limiting strip is not used for limiting the horizontal direction, the roller can roll in the horizontal direction, so that a rolling support structure is formed. Therefore, when the testing position of the beam structure needs to be changed, the original support structure can be directly changed, and the whole rotation of the huge beam structure is not needed. In use, the beam structure such as the cable duct is respectively lapped and supported on the peripheral wall of the roller at two ends, and then the pressurizing unit applies pressure to the cable duct through the distribution beam to complete the bending shear loading test.

Preferably, the roller includes a cylindrical column and a flat support plate welded to an upper end peripheral wall of the column.

Preferably, the base comprises a vertical plate, an upper transverse plate and a lower transverse plate which are respectively positioned at the upper end and the lower end of the vertical plate, wherein the vertical plate, the upper transverse plate and the lower transverse plate are arranged in an I shape, and a reinforcing rib plate is connected between the upper transverse plate and the lower transverse plate.

Preferably, a plurality of vertically through strip-shaped holes are formed in the upper transverse plate, the strip-shaped holes are uniformly distributed at intervals along the axis direction of the roller, the strip length direction of the strip-shaped holes is perpendicular to the axis of the roller, and the limiting strips are connected with the strip-shaped holes through vertically distributed adjusting bolts.

Preferably, the roller is provided with a plurality of radial holes, the radial holes are uniformly arranged at intervals along the axis direction of the roller, the limiting strip is detachably provided with a transverse locating pin, and the locating pin is inserted into the radial holes to form rotation-stopping fit for the roller.

Preferably, the limit strip is an angle steel structure, the angle steel structure comprises a transverse edge connected with the base and a vertical edge contacted with the roller, through holes for the adjusting bolts and the locating pins to pass through are respectively formed in the transverse edge and the vertical edge, and the transverse edge is arranged on one side, far away from the roller, of the vertical edge.

Drawings

FIG. 1 is a schematic view of the present utility model in use;

FIG. 2 is a schematic perspective view of the present utility model;

FIG. 3 is a schematic view of a structure of a base;

FIG. 4 is a schematic diagram of a structure of a spacer;

FIG. 5 is a schematic view of the structure of the roller;

reference numerals illustrate: 1. a pressurizing unit; 2. a distribution beam; 3. a cable trench; 10. a base; 11. an upper cross plate; 12. a riser; 13. a lower cross plate; 14. is connected with a reinforcing rib plate; 15. a bar-shaped hole; 20. a roller; 21. a radial hole; 22. a support plate; 30. a limit bar; 31. a vertical edge; 32. a transverse edge; 33. a through hole; 40. an adjusting bolt; 50. and (5) positioning pins.

Detailed Description

In order that the above objects, features and advantages of the utility model will be readily understood, a more particular description of the utility model will be rendered by reference to specific embodiments thereof which are illustrated in the appended drawings.

In the description of the present utility model, it should be noted that the positional or positional relationship indicated by the terms such as "bottom", "outside", "front and rear", "up and down", etc. are based on the positional or positional relationship shown in the state of use, are merely for convenience of describing the present utility model and simplifying the description, and are not indicative or implying that the apparatus or element in question must have a specific orientation, be configured and operated in a specific orientation, and thus should not be construed as limiting the present utility model.

In the description of the present utility model, it should be noted that, unless explicitly specified and defined otherwise, the term "connected" should be construed broadly, and may be, for example, fixedly connected, detachably connected, or integrally connected; can be directly connected or indirectly connected through an intermediate medium, and can be communication between two elements. The specific meaning of the above terms in the present utility model will be understood in specific cases by those of ordinary skill in the art.

The utility model provides a beam structure bending shear test loading support, includes two bases 10 and two parallel and flat roller 20 that are used for supporting beam structure both ends that put each other, and the up end dismantlement of every base 10 is connected with two spacing 30, the length direction of spacing 30 is on a parallel with the axle center of roller 20, same two on the base 10 form the interval that is used for holding roller 20 between the spacing 30, spacing 30 is laminated with the perisporium face of roller 20 in order to constitute the level to spacing to roller 20, forms the hinge support structure when two spacing 30 make it laminate with roller 20, forms the rolling support structure when demolising two spacing 30.

In the above scheme, the hinge support structure and the rolling support structure are switched through the disassembly and assembly of the limit bar 30, and when the limit bar 30 and the roller 20 are attached to form horizontal limit, the roller 20 cannot generate horizontal displacement and can only rotate, so that the hinge support structure is formed. When the limiting bar 30 is not used for limiting the horizontal direction, the roller 20 can roll in the horizontal direction, so that a rolling support structure is formed. Therefore, when the testing position of the beam structure needs to be changed, the original support structure can be directly changed, and the whole rotation of the huge beam structure is not needed. In use, the beam structure, such as the cable duct 3, is supported at both ends thereof by overlapping the peripheral walls of the rollers 20, respectively, and then the pressurizing unit 1 applies pressure to the cable duct 3 through the distribution beam 2 to complete the bending shear loading test. Wherein the rollers 20 may be fixed with the beam structure to keep the rotation of the rollers 20 synchronized with the deformation of the beam structure. In addition, the scheme can also be provided with two rolling supports or two hinged supports to deal with the test of special working conditions. The roller 20 may also be removed and then used as a beam structure connection node shear test stand in the present application.

Preferably, the roller 20 includes a cylindrical column and a flat support plate 22, and the support plate 22 is welded to an upper end peripheral wall of the column. Thus, the line contact between the column body and the beam structure is changed into the surface contact between the supporting plate 22 and the beam structure, the stability of the support is improved, and meanwhile, the deformation of the beam structure can be directly converted into the rotation or rolling of the column body.

Preferably, the base 10 includes a riser 12, and an upper transverse plate 11 and a lower transverse plate 13 respectively located at the upper end and the lower end of the riser 12, where the riser 12, the upper transverse plate 11 and the lower transverse plate 13 are arranged in an "h" shape, and a reinforcing rib plate 14 is connected between the upper transverse plate 11 and the lower transverse plate 13. In an "I" configuration, i.e., the base 10 is generally in the shape of an I-beam, which retains the overall strength of the base 10 while leaving more room for easy installation of the stop bars 30.

Preferably, the upper transverse plate 11 is provided with a plurality of vertically penetrating bar holes 15, the bar holes 15 are uniformly spaced along the axis direction of the roller 20, the bar length direction of the bar holes 15 is perpendicular to the axis of the roller 20, and the limit bars 30 are in bolted connection with the bar holes 15 through vertically arranged adjusting bolts 40. Therefore, the spacing of the limit bars 30 can be adjusted on the base 10 to adapt to rollers 20 with different sizes, and meanwhile, the switching from the hinged support to the rolling support can be realized only by unscrewing the adjusting bolt 40, so that the switching process is simpler and quicker.

Preferably, the roller 20 is provided with a plurality of radial holes 21, the radial holes 21 are uniformly spaced along the axial direction of the roller 20, the stop bar 30 is detachably provided with a transverse positioning pin 50, and the positioning pin 50 is inserted into the radial holes 21 to form a rotation-stopping fit with the roller 20. Therefore, the roller 20 can be stopped and limited by inserting the positioning pin 50, so that the whole support structure can be completely fixed, the support seat can be switched among a hinged support, a rolling support and fixed manufacturing, and the optional number of the support structures required by the test is further improved. The locating pin 50 may be a bolt structure.

Preferably, the limit bar 30 is an angle steel structure, the angle steel structure comprises a horizontal edge 32 connected with the base 10 and a vertical edge 31 contacted with the roller 20, through holes 33 for the adjusting bolts 40 and the positioning pins 50 to pass through are respectively formed in the horizontal edge 32 and the vertical edge 31, and the horizontal edge 32 is arranged on one side, far away from the roller 20, of the vertical edge 31. The through holes 33 of the transverse edges 32 and the through holes 33 of the vertical edges 31 are arranged in a staggered manner in the length direction of the limit bars 30, so that the mutual interference of the adjusting bolts 40 and the positioning pins 50 is avoided.

Although the present disclosure is described above, the scope of protection of the present disclosure is not limited thereto. Various changes and modifications may be made by one skilled in the art without departing from the spirit and scope of the disclosure, and these changes and modifications will fall within the scope of the utility model.

Claims (6)

1. The utility model provides a beam structure bending shear test loading support which characterized in that: including two bases (10) and two parallel and flat roller (20) that are used for supporting beam formula structure both ends that put each other, the up end dismantlement of every base (10) is connected with two spacing (30), the length direction of spacing (30) is on a parallel with the axle center of roller (20), same form between spacing (30) on base (10) and be used for holding roller (20) interval, spacing (30) are laminated with the perisporium face of roller (20) in order to constitute the level to spacing to roller (20), form hinge support structure when two spacing (30) make it laminate with roller (20), form rolling support structure when demolising two spacing (30).

2. The beam structure bending shear test loading support according to claim 1, wherein: the roller (20) comprises a cylindrical column body and a horizontally arranged supporting plate (22), and the supporting plate (22) is welded on the peripheral wall of the upper end of the column body.

3. The beam structure bending shear test loading support according to claim 1, wherein: the base (10) comprises a vertical plate (12), an upper transverse plate (11) and a lower transverse plate (13) which are respectively positioned at the upper end and the lower end of the vertical plate (12), wherein the vertical plate (12), the upper transverse plate (11) and the lower transverse plate (13) are arranged in an I shape, and a reinforcing rib plate (14) is connected between the upper transverse plate (11) and the lower transverse plate (13).

4. A beam structure bending shear test loading mount according to claim 3, wherein: the upper transverse plate (11) is provided with a plurality of vertically through strip-shaped holes (15), the strip-shaped holes (15) are uniformly distributed at intervals along the axis direction of the roller (20), the strip length direction of the strip-shaped holes (15) is perpendicular to the axis of the roller (20), and the limiting strips (30) are connected with the strip-shaped holes (15) through vertically-distributed adjusting bolts (40) in a bolt mode.

5. A beam structure bending shear test loading stand according to claim 1 or 2 or 3 or 4, wherein: a plurality of radial holes (21) are formed in the roller (20), the radial holes (21) are uniformly arranged at intervals along the axis direction of the roller (20), transverse locating pins (50) are detachably arranged on the limiting strips (30), and the locating pins (50) are inserted into the radial holes (21) to form rotation stopping fit of the roller (20).

6. A beam structure bending shear test loading stand according to claim 1 or 2 or 3 or 4, wherein: the limiting strip (30) is of an angle steel structure, the angle steel structure comprises a transverse edge (32) connected with the base (10) and a vertical edge (31) contacted with the roller (20), through holes (33) for allowing the adjusting bolts (40) and the locating pins (50) to penetrate through are respectively formed in the transverse edge (32) and the vertical edge (31), and the transverse edge (32) is arranged on one side, far away from the roller (20), of the vertical edge (31).