CN220322926U - Single-beam load test loading counterforce device - Google Patents

Abstract

The utility model discloses a loading counterforce device for a single beam load test, which has the technical scheme that: the test device comprises a pedestal, wherein a test beam is arranged on the top surface of the pedestal, a distribution beam is arranged on the top surface of the test beam, the bottom surface of the distribution beam is in contact with the top surface of the test beam, a jack is fixedly arranged on the top surface of the distribution beam, a connecting plate is fixedly arranged at the telescopic end of the jack, a pressure sensor is fixedly arranged on the top surface of the connecting plate, a fixing plate is fixedly arranged on the top surface of the pressure sensor, and a counter-force beam is fixedly arranged on the top surface of the fixing plate; limiting component, limiting component sets up the top surface of pedestal, be used for right the test roof beam is spacing, through setting up the counter-force roof beam, counter-force roof beam and fixed plate fixed mounting, the staff passes through the bolt fastening with pedestal, mounting panel on ground earlier, then places the test roof beam at the top surface of pedestal, carries out load test to the test roof beam through jack, pressure sensor, counter-force roof beam.

Description

Single-beam load test loading counterforce device

Technical Field

The utility model relates to the technical field of civil engineering tests, in particular to a loading counter-force device for a single-beam load test.

Background

The design calculation of the traditional building bridge and other structures is based on rigid foundation assumption, soil body, foundation and structure are used as independent units discrete from each other to carry out static balance analysis calculation, but for the design of a large complex structure, the traditional rigid foundation assumption is unreasonable, the research result in recent years proves that the soil body, foundation and structure are mutually connected and mutually influenced, the coupling analysis is carried out as a whole, the soil-foundation-structure interaction relates to a plurality of fields of geotechnical engineering, structural engineering, earthquake engineering and the like, and comprises a plurality of leading edge research subjects of nonlinearity, large deformation, contact surface, local discontinuity and the like, and the research method for the soil-foundation-structure interaction mainly comprises a theoretical analysis method and a test method at present, wherein the field test method is the most effective way for researching the soil-foundation-structure interaction, and the load test is an important means for detecting the bearing capacity of a beam body.

According to publication No.: the Chinese patent of CN216208058U relates to a basket type single-beam load test loading counterforce device, which comprises a test beam and a counterweight beam, wherein the test beam and the counterweight beam are vertically arranged below the counterforce beam; the test beam is arranged in the middle, and the counterweight beams are arranged at two ends; a support body is arranged between the counterweight beam and the counter-force beam; a plurality of suspenders are inserted into the counter-force beam; the suspender is fixed on the counter-force beam through steel backing plates and nuts which are arranged at the upper end and the lower end of the counter-force beam; i-steel is arranged on the front surface and the rear surface of the counter-force beam, and the I-steel is fixed on the counter-force beam through a steel backing plate; and a distribution beam, a cross beam, a jack and a sensor are sequentially arranged between the test beam and the counter-force beam.

The above solution still has the following drawbacks: this single beam load test load reaction device is when using, earlier through placing the test roof beam on the pedestal, then carry out load test to the test roof beam through reaction roof beam, distribution roof beam, crossbeam, jack and pressure sensor, however, only place the test roof beam on the pedestal and test, it is spacing to the test roof beam for the test roof beam is at the in-process of test, can produce the displacement, and then leads to the test result to produce the deviation easily, influences the accuracy of test, for this we propose a single beam load test load reaction device.

Disclosure of Invention

Aiming at the defects of the prior art, the utility model provides a loading counter-force device for a single-beam load test, which solves the problems that the test beam is only placed on a pedestal for test, and is not limited, so that the test beam can possibly displace in the test process, and further the test result is easily caused to deviate, and the accuracy of the test is affected.

The technical aim of the utility model is realized by the following technical scheme:

a single beam load test loading reaction device comprising: the test device comprises a pedestal, a test beam is placed on the top surface of the pedestal, a distribution beam is arranged on the top surface of the test beam, the bottom surface of the distribution beam is in contact with the top surface of the test beam, a jack is fixedly arranged on the top surface of the distribution beam, a connecting plate is fixedly arranged at the telescopic end of the jack, a pressure sensor is fixedly arranged on the top surface of the connecting plate, a fixing plate is fixedly arranged on the top surface of the pressure sensor, a counter-force beam is fixedly arranged on the top surface of the fixing plate, two first threaded holes are formed in the top surface of the counter-force beam, screws are respectively connected with the inner parts of the first threaded holes in a threaded manner, nuts are respectively connected with the threaded ends of the screws in a threaded manner, mounting plates are respectively fixedly arranged at the bottom ends of the screws, and limiting assemblies are arranged on the top surface of the pedestal and used for limiting the test beam.

Through adopting above-mentioned technical scheme, through setting up the counter-force beam, counter-force beam and fixed plate fixed mounting, the staff passes through the bolt fastening at ground with pedestal, mounting panel earlier, then places the test beam at the top surface of pedestal, carries out load test to the test beam through jack, pressure sensor, counter-force beam.

Preferably, the limiting assembly includes: the movable groove is formed in the top surface of the pedestal, the movable holes are formed in the outer wall surface of the pedestal, the driving motor is fixed on the outer wall surface of the pedestal, the output shaft of the driving motor is movably sleeved on the inner circular wall surface of the movable holes, the output shaft of the driving motor is fixedly provided with a screw rod, the movable groove is internally provided with a limiting plate, one side of the limiting plate is provided with a second threaded hole, and the second threaded hole is internally connected with the screw rod in a threaded mode.

Through adopting above-mentioned technical scheme, through setting up the limiting plate, the second screw hole has been seted up to one side of limiting plate, and then after the top surface of pedestal is placed to the experimental roof beam with the staff, through starting a plurality of driving motor for a plurality of limiting plate is close to each other, makes a plurality of limiting plate carry out spacing fixedly to one side of experimental roof beam respectively, thereby can be when carrying out the load test to experimental roof beam, do benefit to and prevent experimental roof beam skew, increase stability.

Preferably, the limiting assembly further comprises: the positioning blocks are respectively and fixedly arranged on the outer wall surface of the distribution beam, positioning plates are respectively and movably sleeved in the positioning blocks, and one sides of the positioning plates are respectively contacted with the outer wall surface of the test beam.

Through adopting above-mentioned technical scheme, through setting up the locating plate, locating plate movable sleeve establishes in the inside of locating piece, and then after the staff places the test beam in the below of distributing beam, does benefit to spacing to the test beam through the locating plate, and auxiliary test beam fixes a position, does benefit to the central point that locates the test beam at the central point of distributing beam, improves experimental stability and the accuracy of test Liang Hezai.

Preferably, a plurality of third screw holes are respectively formed in one side of the positioning block, a plurality of bolt bodies are respectively connected with the inner parts of the third screw holes in a threaded mode, a plurality of thread grooves are respectively formed in one side of the positioning plate, and the inner parts of the thread grooves are respectively connected with the threaded ends of the plurality of bolt bodies in a threaded mode.

Through adopting above-mentioned technical scheme, through setting up the bolt body, bolt body and thread groove threaded connection, and then after the staff put into the locating piece with the locating plate, do benefit to spacing fixedly to the locating piece through rotating the bolt body, and then when the staff carries out load test to the test beam, can spacing to the test beam, prevent the top skew of test beam, increase steadiness.

Preferably, a plurality of limiting grooves are respectively formed in two sides of the inner wall of the movable groove, limiting blocks are respectively fixedly mounted on two sides of the outer wall of the limiting plate, and the two limiting blocks are respectively arranged in the two limiting grooves in a sliding mode.

Through adopting above-mentioned technical scheme, through setting up the stopper, the stopper slides and sets up in the spacing inslot, and then starts driving motor when the staff for the lead screw rotates, when making the limiting plate remove, does benefit to spacing limiting plate through the stopper, prevents that the limiting plate from rotating along with the lead screw, does benefit to the stability that improves the limiting plate.

Preferably, one side of each of the plurality of limiting plates is fixedly provided with an anti-skid pad.

Through adopting above-mentioned technical scheme, through setting up the slipmat, slipmat and limiting plate fixed mounting, and then start driving motor when the staff for after the limiting plate removes towards experimental roof beam, make the slipmat contact with the outer wall of experimental roof beam, and then do benefit to the increase friction dynamics through the slipmat, increase stability.

In summary, the utility model has the following advantages:

through setting up spacing subassembly, spacing subassembly can carry out spacingly to the test beam, spacing subassembly passes through the pedestal, driving motor, the lead screw, the limiting plate is convenient for the staff carry out spacingly to the test beam, do benefit to and prevent that the test beam from producing the displacement at the in-process of test, and then improve the reliability of test result, and ensure the accuracy of measured data, through setting up the counter-force beam, counter-force beam and fixed plate fixed mounting, the staff passes through the bolt fastening at ground with pedestal earlier, then place the test beam at the top surface of pedestal, through the jack, pressure sensor, the counter-force beam carries out load test to the test beam, through setting up the limiting plate, the second screw hole has been seted up to one side of limiting plate, and then place the test beam after the top surface of pedestal when the staff, through starting a plurality of driving motor, make a plurality of limiting plate be close to each other, make a plurality of limiting plate carry out spacing fixedly to one side of test beam respectively, thereby can be favorable to preventing the test beam skew when carrying out load test, increase stability.

Through setting up the locating plate, the locating plate movable sleeve establishes in the inside of locating piece, and then place the test beam in the below of distribution roof beam when the staff, do benefit to spacing to the test beam through the locating plate, auxiliary test roof beam is located, do benefit to the central point with the test beam and be located the central point of distribution roof beam, improve experimental stability and accuracy of test Liang Hezai, through setting up the bolt body, bolt body and thread groove threaded connection, and then after the staff put into the inside of locating piece with the locating plate, do benefit to spacing fixed to the locating piece through rotating the bolt body, and then when the staff carries out load test to the test beam, can carry out spacingly to the test beam, prevent the top skew of test beam, increase steadiness, through setting up the stopper, and then start driving motor when the staff, make the lead screw rotate, make the limiting plate remove, be favorable to spacing to the limiting plate, prevent that the limiting plate from rotating along with the lead screw, through setting up the slipmat, and limiting plate fixed mounting, and then when the staff starts driving motor, make the limiting plate remove towards the test beam, make with the slipmat, and further increase the anti-slip strength is favorable to the stability.

Drawings

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

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

FIG. 3 is a schematic view of a limiting plate structure of the present utility model;

fig. 4 is a schematic view of a positioning plate structure according to the present utility model.

Reference numerals: 1. a pedestal; 2. a test beam; 3. a distribution beam; 4. a jack; 5. a connecting plate; 6. a pressure sensor; 7. a fixing plate; 8. a reaction beam; 9. a first threaded hole; 10. a screw; 11. a nut; 12. a mounting plate; 13. a movable groove; 14. a movable hole; 15. a driving motor; 16. a screw rod; 17. a limiting plate; 18. a second threaded hole; 19. a positioning block; 20. a positioning plate; 21. a third threaded hole; 22. a bolt body; 23. a thread groove; 24. a limit groove; 25. a limiting block; 26. an anti-slip mat.

Detailed Description

The following description of the embodiments of the present utility model will be made clearly and completely with reference to the accompanying drawings, in which it is apparent that the embodiments described are only some embodiments of the present utility model, but not all embodiments. All other embodiments, which can be made by those skilled in the art based on the embodiments of the utility model without making any inventive effort, are intended to be within the scope of the utility model.

Referring to fig. 1-4, a single-beam load test loading counterforce device comprises a pedestal 1, a test beam 2 is placed on the top surface of the pedestal 1, the test beam 2 is of a conventional structure, the top surface of the test beam 2 is provided with a distribution beam 3, the bottom surface of the distribution beam 3 is contacted with the top surface of the test beam 2, a jack 4 is fixedly arranged on the top surface of the distribution beam 3, the jack 4 is of the conventional structure, a connecting plate 5 is fixedly arranged at the telescopic end of the jack 4, a pressure sensor 6 is fixedly arranged on the top surface of the connecting plate 5, the pressure sensor 6 is of the conventional structure, a fixing plate 7 is fixedly arranged on the top surface of the pressure sensor 6, a counterforce beam 8 is fixedly arranged on the top surface of the fixing plate 7, two first threaded holes 9 are formed on the top surface of the counterforce beam 8, screw rods 10 are respectively and threadedly connected in the two first threaded holes 9, the screw rods 10 are of the existing structure, the threaded ends of the two screw rods 10 are respectively connected with nuts 11 in a threaded manner, the nuts 11 are of the existing structure, the bottom ends of the two screw rods 10 are respectively fixedly provided with mounting plates 12, the top surface of the pedestal 1 is provided with a limiting component for limiting the test beam 2, the counter-force beam 8 and the fixing plate 7 are fixedly arranged through the counter-force beam 8, a worker firstly fixes the pedestal 1 and the mounting plates 12 on the ground through bolts, then places the test beam 2 on the top surface of the pedestal 1, carries out load test on the test beam 2 through the jack 4, the pressure sensor 6 and the counter-force beam 8, the limiting component also comprises a plurality of positioning blocks 19, the positioning blocks 19 are U-shaped, the plurality of positioning blocks 19 are respectively fixedly arranged on the outer wall surface of the distribution beam 3, the inside of the plurality of positioning blocks 19 is respectively movably sleeved with a positioning plate 20, one side of a plurality of locating plate 20 contacts with the outer wall surface of test beam 2 respectively, through setting up locating plate 20, locating plate 20 movable sleeve establishes in the inside of locating piece 19, and then after the staff places test beam 2 in the below of distributing beam 3, does benefit to spacing test beam 2 through locating plate 20, and auxiliary test beam 2 fixes a position, does benefit to the central point with test beam 2's central point that distributes beam 3, improves test beam 2 load test's stability and accuracy.

Referring to fig. 1-4, third screw holes 21 have been seted up respectively to one side of a plurality of locating piece 19, the inside of a plurality of third screw holes 21 is threaded connection respectively has bolt body 22, bolt body 22 is for having the structure and does not do nothing here, thread groove 23 has been seted up respectively to one side of a plurality of locating plate 20, the inside of a plurality of thread groove 23 respectively with the screw end threaded connection of a plurality of bolt body 22, through setting up bolt body 22, bolt body 22 and thread groove 23 threaded connection, and then after the staff put into locating piece 19's inside with locating plate 20, through rotating bolt body 22 to do benefit to spacing fixed to locating piece 19, and then when the staff carries out load test to experimental roof beam 2, can carry out the spacing to experimental roof beam 2, prevent the top skew of experimental roof beam 2, increase steadiness, limit groove 24 has been seted up respectively to the inner wall both sides of a plurality of movable groove 13, limit plate 17's outer wall both sides fixed mounting have stopper 25 respectively, two limit stopper 25 slide the setting in two limit grooves 24 respectively, through setting up stopper 25, stopper 25 slide setting up in limit groove 24, and then when the staff starts motor 15 and put into locating plate 19, and then, it is unfavorable for 16 to make the lead screw 17 to make this drive at this limit plate 17, 16, along with the lead screw 17 has not carried out the limit plate 16, and is favorable to carry out the limit structure to move 17, and is stable when the lead screw 17 has been done.

Referring to fig. 1-4, the anti-skid pad 26 is fixedly installed on one side of a plurality of limiting plates 17 respectively, the anti-skid pad 26 is not repeated here for the existing structure, through setting up the anti-skid pad 26, anti-skid pad 26 and limiting plates 17 fixed mounting, and then when staff starts driving motor 15, make limiting plates 17 remove towards experimental roof beam 2 after, make anti-skid pad 26 contact with the outer wall of experimental roof beam 2, and then do benefit to the increase friction dynamics through anti-skid pad 26, increase stability, spacing subassembly includes a plurality of movable tank 13, a plurality of movable tank 13 offer the top surface at pedestal 1 respectively, a plurality of movable hole 14 has been offered to pedestal 1's outer wall, pedestal 1's outer wall is fixed with a plurality of driving motor 15, the output shaft of a plurality of driving motor 15 movable sleeve respectively is established at the interior wall of a plurality of movable hole 14, a plurality of driving motor 15's output shaft respectively fixed mounting has lead screw 16, the inside of a plurality of movable tank 13 is provided with limiting plates 17 respectively, a plurality of limiting plates 17 one side of 17 has been seted up second screw hole 18 respectively, and a plurality of second screw hole 18 are connected with a plurality of lead screw 16 thread respectively, and the lead screw 16 thread respectively, through setting up 17 one side of limiting plates 17, a plurality of limiting plates 17 are passed through the limiting plates 17, a plurality of limiting plates 17 are located at the side of the limiting beams 2, and are located at the top surface of the limiting plates 2, and are located at the side of the limiting plates 2, and are adjacent to each other, and the experimental roof beam 2 is carried out at the top surface is kept close to each other, and the experimental roof beam 2, and the experimental roof beam is carried out, and the test 2 is carried out and the test is carried out and is stable.

Working principle: referring to fig. 1-4, when in use, a worker firstly fixes a pedestal 1 and a mounting plate 12 on the ground through bolts, then places a test beam 2 on the top surface of the pedestal 1, performs a load test on the test beam 2 through a jack 4, a pressure sensor 6 and a counter-force beam 8, after the worker places the test beam 2 below a distribution beam 3, the worker is favorable for limiting the test beam 2 through a positioning plate 20, assists in positioning the test beam 2, is favorable for positioning the center point of the test beam 2 at the center point of the distribution beam 3, improves the stability and accuracy of the load test of the test beam 2, and after the worker places the positioning plate 20 inside a positioning block 19, the worker is favorable for limiting and fixing the positioning block 19 through rotating a bolt body 22, and further can limit the test beam 2 when the worker performs the load test on the test beam 2, prevent the top of the test beam 2 from shifting, increase stability, after the worker places the test beam 2 on the top surface of the pedestal 1, through starting a plurality of driving motors 15, make a plurality of limiting plates 17 get close to each other, make a plurality of limiting plates 17 limit and fix one side of the test beam 2 respectively, thereby can be favorable to preventing the test beam 2 from shifting when carrying out load test on the test beam 2, increase stability, when the worker starts the driving motors 15, make the limiting plates 17 move towards the test beam 2, make the anti-slip pad 26 contact with the outer wall of the test beam 2, and then favorable to increasing friction force through the anti-slip pad 26, increase stability, when the worker starts the driving motors 15, make the screw 16 rotate, make the limiting plates 17 move, favorable to limiting the limiting plates 17 through the limiting blocks 25, prevent the limiting plates 17 from rotating along with the screw 16, the stability of the limiting plate 17 is improved.

Although embodiments of the present utility model have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made therein without departing from the principles and spirit of the utility model, the scope of which is defined in the appended claims and their equivalents.

Claims (6)

1. The utility model provides a single-beam load test loading counterforce device which characterized in that includes:

the test device comprises a pedestal (1), a test beam (2) is placed on the top surface of the pedestal (1), a distribution beam (3) is arranged on the top surface of the test beam (2), the bottom surface of the distribution beam (3) is in contact with the top surface of the test beam (2), a jack (4) is fixedly arranged on the top surface of the distribution beam (3), a connecting plate (5) is fixedly arranged at the telescopic end of the jack (4), a pressure sensor (6) is fixedly arranged on the top surface of the connecting plate (5), a fixing plate (7) is fixedly arranged on the top surface of the pressure sensor (6), a counter-force beam (8) is fixedly arranged on the top surface of the fixing plate (7), two first threaded holes (9) are formed in the top surface of the counter-force beam (8), screw rods (10) are respectively connected in a threaded mode, nuts (11) are respectively connected to the threaded ends of the two screw rods (10), and mounting plates (12) are respectively and fixedly arranged at the bottom ends of the two screw rods (10);

the limiting assembly is arranged on the top surface of the pedestal (1) and used for limiting the test beam (2).

2. The single beam load test loading counter force device of claim 1, wherein the limit assembly comprises:

the movable groove (13) of a plurality of, a plurality of the movable groove (13) are offered respectively the top surface of pedestal (1), a plurality of movable hole (14) have been offered to the outer wall of pedestal (1), the outer wall of pedestal (1) is fixed with a plurality of driving motor (15), a plurality of the output shaft of driving motor (15) is movable sleeve respectively establishes the interior circular wall at a plurality of movable hole (14), a plurality of the output shaft of driving motor (15) is fixed mounting respectively has lead screw (16), a plurality of the inside of movable groove (13) is provided with limiting plate (17) respectively, a plurality of second screw hole (18) have been offered respectively to one side of limiting plate (17), a plurality of the inside of second screw hole (18) respectively with a plurality of lead screw (16) threaded connection.

3. The single beam load test loading counter force device of claim 1, wherein the limit assembly further comprises:

the device comprises a plurality of positioning blocks (19), wherein the plurality of positioning blocks (19) are respectively and fixedly arranged on the outer wall surface of a distribution beam (3), positioning plates (20) are respectively and movably sleeved in the plurality of positioning blocks (19), and one sides of the plurality of positioning plates (20) are respectively contacted with the outer wall surface of a test beam (2).

4. The single-beam load test loading counterforce device according to claim 3, wherein a third threaded hole (21) is respectively formed in one side of each of the plurality of positioning blocks (19), bolt bodies (22) are respectively connected with the inner parts of the plurality of third threaded holes (21) in a threaded manner, thread grooves (23) are respectively formed in one side of each of the plurality of positioning plates (20), and the inner parts of the plurality of thread grooves (23) are respectively connected with threaded ends of the plurality of bolt bodies (22) in a threaded manner.

5. The single-beam load test loading counterforce device according to claim 2, wherein limiting grooves (24) are respectively formed in two sides of the inner wall of the plurality of movable grooves (13), limiting blocks (25) are respectively fixedly mounted on two sides of the outer wall of the limiting plate (17), and the two limiting blocks (25) are respectively arranged in the two limiting grooves (24) in a sliding mode.

6. The single-beam load test loading counterforce device according to claim 2, wherein one side of each of the limiting plates (17) is fixedly provided with an anti-slip pad (26).