CN223139249U

CN223139249U - Round steel pipe gangue concrete short column local bearing capacity test equipment

Info

Publication number: CN223139249U
Application number: CN202422281418.6U
Authority: CN
Inventors: 姚埔; 刘敏; 马瑞; 和轩呈
Original assignee: Liaoning Technical University
Current assignee: Liaoning Technical University
Priority date: 2024-09-19
Filing date: 2024-09-19
Publication date: 2025-07-22
Anticipated expiration: 2034-09-19

Abstract

The utility model discloses a local bearing capacity testing device for a circular steel tube gangue concrete short column, and relates to the technical field of bearing capacity testing of steel tube concrete. The utility model includes a base and a U-shaped frame, wherein the U-shaped frame is arranged on the upper side of the base, and a group of grooves are arranged at one end of the upper side of the base, and a group of pressure heads are respectively placed in the corresponding grooves, and each of the pressure heads is composed of a pressure plate and a mounting column, and the pressure plate diameters of a group of pressure heads decrease in sequence. The utility model can perform bearing capacity testing on test samples of gangue concrete short columns of different diameters through pressure heads of different diameters, and after selecting the pressure head, perform bearing capacity testing on different positions of the same test sample, which is helpful to understand whether there are differences in the bearing capacity of the structure in different areas. The device can select a pressure head of a suitable diameter according to the test requirements, thereby improving the versatility and adaptability of the equipment, and pressure heads of various diameters are all detachable, which increases the flexibility of the test.

Description

Round steel pipe gangue concrete short column local bearing capacity test equipment

Technical Field

The utility model relates to the technical field of bearing capacity test of steel tube concrete, in particular to a device for testing local bearing capacity of a round steel tube gangue concrete short column.

Background

The steel pipe concrete is characterized in that the concrete is poured into a steel pipe and tamped to increase the strength and rigidity of the steel pipe, and in the building industry, the gangue concrete is used as a novel building material, has the advantages of light weight, high strength, good heat preservation and insulation performance and the like, and is widely applied to various building structures. However, the local bearing capacity of gangue concrete structures is an important measure for its safety performance. In order to ensure the safety and reliability of the gangue concrete structure in practical application, the local bearing capacity test is required to be carried out on the gangue concrete short column.

At present, when testing the ultimate bearing capacity of conventional concrete filled steel tube, the concrete filled steel tube is often required to be placed on a punching machine for testing, and certain limitations exist in the testing equipment, such as single diameter of a testing pressure head, and bearing capacity tests cannot be carried out on different positions of the same testing sample, so that the testing result cannot fully reflect the bearing capacity of the structure in different areas. In addition, the universality and the adaptability of the existing equipment are poor, and different test requirements are difficult to meet.

Disclosure of utility model

In order to solve the problems, namely the problems proposed by the background technology, the utility model provides a testing device for the local bearing capacity of a round steel pipe gangue concrete short column, which comprises a base and a U-shaped frame, wherein the U-shaped frame is arranged on the upper side of the base, one end of the upper side of the base is provided with a group of grooves, a group of pressure heads are respectively arranged in the corresponding grooves, each pressure head consists of a pressure plate and a mounting column, the diameters of the pressure plates of the group of pressure heads are sequentially decreased, the diameters of the pressure plates of the group of pressure heads are matched with the diameters of the pressure plates of the group of pressure heads, the middle part of each mounting column is provided with an annular groove, the U-shaped frame is provided with a downward-pressing testing structure, and the lower side of the downward-pressing testing structure is provided with a pressure head dismounting structure;

the downward pressure test structure comprises a hydraulic cylinder, a pair of guide rods, a mounting plate, a sensor, a pair of sliding rods, a display screen, a pair of stop blocks and a straight groove plate;

The hydraulic cylinder is arranged on the upper side of the transverse plate of the U-shaped frame, the output end of the hydraulic cylinder penetrates through the U-shaped frame and is fixedly connected with the mounting plate, two ends of the upper side of the mounting plate are respectively and fixedly connected with the guide rods, a pair of guide rods penetrate through the transverse plate of the U-shaped frame, the display screen is arranged on one side of the mounting plate, a pair of slide bars penetrate through the mounting plate and are fixedly connected with corresponding stop blocks, a pair of slide bars are fixedly connected with the straight groove plates, the sensor is arranged on the upper side of the straight groove plates, and the sensor is arranged below the mounting plate.

The utility model is further arranged that the pressure head dismounting structure comprises a screw rod, a knob, a pair of sliding blocks, a pair of L-shaped rods and a sleeve;

The middle part of the lower side of the straight groove plate is fixedly connected with the sleeve, two sides of the sleeve are provided with corresponding guide holes, two ends in the straight groove plate are respectively connected with one end of the screw rod in a bearing way, the screw rod is provided with two sections of threads with opposite rotation directions, one end of the screw rod penetrates through the straight groove plate and is fixedly connected with the knob, the pair of sliding blocks are arranged in the straight groove plate in a sliding mode, two ends of the lead screw are in threaded connection with the corresponding sliding blocks respectively, the lower sides of the pair of sliding blocks are fixedly connected with the corresponding L-shaped rods respectively, and opposite ends of the cross rods of the pair of L-shaped rods are aligned with the corresponding guide holes respectively.

The utility model is further arranged that the opposite ends of the cross bars of the pair of L-shaped bars are arc-shaped surfaces which are matched with the annular grooves of each mounting column.

The utility model is further arranged that the opposite sides of the arc-shaped surfaces of the pair of L-shaped rods are coated with hard rubber layers.

The utility model is further provided that the sensor is an S-shaped pulling and pressing type sensor, and the model is LFS-02.

The device has the beneficial technical effects that the bearing capacity test can be carried out on the coal gangue concrete short column test samples with different diameters through the pressure heads with different diameters, and the bearing capacity test can be carried out on different positions of the same test sample after the pressure heads are selected, so that whether the bearing capacity of the structure in different areas is different or not can be known, the pressure heads with proper diameters can be selected according to the test requirements, the universality and the adaptability of the device are improved, the pressure heads with various diameters are all detachable, and the testing flexibility is improved.

Drawings

Fig. 1 shows a schematic perspective view of the present utility model.

Fig. 2 shows a schematic perspective view of the second embodiment of the present utility model.

Fig. 3 shows a three-dimensional schematic of the present utility model.

Fig. 4 shows a partial schematic structure of the present utility model.

The device comprises a reference numeral 1, a hydraulic cylinder, 2, a guide rod, 3, a mounting plate, 4, a U-shaped frame, 5, a pressure head, 6, a sleeve, 7, an L-shaped rod, 8, a straight groove plate, 9, a sensor, 10, a slide bar, 11, a display screen, 12, short columns to be tested, 13, a slide block, 14, a mounting column, 15 and a lead screw.

Detailed Description

Preferred embodiments of the present utility model are described below with reference to fig. 1-4. It should be understood by those skilled in the art that these embodiments are merely for explaining the technical principles of the present utility model, and are not intended to limit the scope of the present utility model.

The utility model provides a device for testing the local bearing capacity of a round steel pipe gangue concrete short column, wherein before the device is used, the output end of a hydraulic cylinder 1 is in a contracted state, a pair of L-shaped rods 7 are positioned at the position with the farthest relative distance, the lower sides of a pair of check blocks are attached to the upper side of a mounting plate 3, a gap is reserved between a sensor 9 and the mounting plate 3, as shown in figure 1, when the device is used, a group of round steel pipe gangue concrete short columns (hereinafter called as short columns 12 to be tested) is selected, a pressure head 5 with a proper diameter is selected according to the test requirement of the short columns 12 to be tested (the larger the diameter is due to the fact that the contact area between the pressure head 5 and the short columns 12 to be tested is different, the smaller the pressure (namely the pressure intensity) on the unit area is the larger the diameter is); on the contrary, the smaller the diameter is, the smaller the contact area is, the larger the pressure (namely the pressure) on the unit area is, the pressure distribution is influenced by the change of the contact area, the larger pressing plate 5 can lead the pressure distribution to be more uniform, the smaller pressing plate 5 can lead the pressure distribution to be more concentrated, therefore, the pressing head 5 with proper diameter can be selected according to the local range of the bearing capacity test), the upper end of the mounting column 14 of one pressing head 5 is inserted into the sleeve 6, the knob is rotated, the knob drives the screw rod 15 to rotate, the screw rod 15 drives the pair of sliding blocks 13 to slide along the direction of approaching each other in the straight groove plate 8, the pair of sliding blocks 13 drive the corresponding L-shaped rods 7 to slide along the direction of approaching each other, the opposite ends of the cross bars of the pair of L-shaped rods 7 are respectively clamped into the annular grooves of the mounting column 14 through the corresponding guide holes, when the opposite ends of the cross bars of the pair of L-shaped rods 7 are tightly adhered to the annular grooves of the mounting column 14, the knob is stopped, at the moment, one pressing head 5 is fixed in the sleeve 6, as shown in fig. 2, the short column 12 to be measured is placed on the base, the position to be measured of the short column 12 to be measured is moved below the pressure head 5, the hydraulic cylinder 1 is started, the output end of the hydraulic cylinder 1 stretches out to drive the mounting plate 3 to slide downwards, the mounting plate 3 drives the pair of guide rods 2 to slide downwards, the mounting plate 3 drives the pressure head 5 to slide downwards through the pair of sliding rods 10, the straight groove plate 8 and the like, when the lower side of the pressure head 5 is attached to the upper side of the short column 12 to be measured, the output end of the hydraulic cylinder 1 continues to stretch out, the pressure head 5 drives the sensor 9 and the pair of sliding rods 10 to slide upwards through the straight groove plate 8, when the upper side of the sensor 9 is attached to the mounting plate 3, the display screen 11 starts to display pressure data of the sensor 9, the output end of the hydraulic cylinder 1 continues to stretch out to gradually apply load until the point to be measured of the sample 12 to be measured is damaged, recording the bearing capacity data that display screen 11 shows this moment, start pneumatic cylinder 1 again and rise pressure head 5, put into next sample plate 12 that awaits measuring, carry out the bearing capacity test to another local position of next sample 12 that awaits measuring, the operation process is the same, it is unnecessary to describe again, the purpose of carrying out the bearing capacity test to different positions of same kind of test sample has been reached, record the bearing capacity of different positions, help knowing whether the bearing capacity of structure in different regions has the purpose of difference, this device is convenient for carry out the bearing capacity test to gangue concrete short column test sample of different diameters, can select the pressure head 5 of suitable diameter according to the test demand, the commonality and the adaptability of equipment have been improved, the pressure head 5 of multiple diameter is detachable, the flexibility of test has been increased.

While the utility model has been described with reference to a preferred embodiment, various modifications may be made and equivalents may be substituted for elements thereof without departing from the scope of the utility model, and in particular, the technical features set forth in the various embodiments may be combined in any manner so long as there is no structural conflict. The present utility model is not limited to the specific embodiments disclosed herein, but encompasses all technical solutions falling within the scope of the claims.

In the description of the present utility model, terms such as "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inner", "outer", and the like, which indicate a direction or a positional relationship, are based on the direction or the positional relationship shown in the drawings, are merely for convenience of description, and do not indicate or imply that the apparatus or elements must have a specific orientation, be constructed and operated in a specific orientation, and thus are not to be construed as limiting the present utility model. Furthermore, the terms "first," "second," and "third" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance.

In addition, it should be noted that, in the description of the present utility model, unless explicitly specified and limited otherwise, the terms "mounted," "connected," and "connected" are to be construed broadly, and may be, for example, fixedly connected, detachably connected, integrally connected, mechanically connected, electrically connected, directly connected, indirectly connected through an intermediate medium, or in communication between two elements. The specific meaning of the above terms in the present utility model can be understood by those skilled in the art according to the specific circumstances.

The terms "comprises," "comprising," or any other variation thereof, are intended to cover a non-exclusive inclusion, such that a process, article, or apparatus/means that comprises a list of elements does not include only those elements but may include other elements not expressly listed or inherent to such process, article, or apparatus/means.

Thus far, the technical solution of the present utility model has been described in connection with the preferred embodiments shown in the drawings, but it is easily understood by those skilled in the art that the scope of protection of the present utility model is not limited to these specific embodiments. Equivalent modifications and substitutions for related technical features may be made by those skilled in the art without departing from the principles of the present utility model, and such modifications and substitutions will fall within the scope of the present utility model.

Claims

1. The device for testing the local bearing capacity of the round steel pipe gangue concrete short column comprises a base and a U-shaped frame (4) and is characterized in that the U-shaped frame (4) is arranged on the upper side of the base, one end of the upper side of the base is provided with a group of grooves, a group of pressure heads (5) are respectively arranged in the corresponding grooves, each pressure head (5) is composed of a pressure plate and a mounting column (14), the diameters of the pressure plates of the group of pressure heads (5) are sequentially decreased, the diameters of the pressure plates of the group of pressure heads are matched with the diameters of the pressure plates of the group of pressure heads, an annular groove is formed in the middle of each mounting column (14), a pressing test structure is arranged on the U-shaped frame (4), and a pressing head dismounting structure is arranged on the lower side of the pressing test structure;

The downward pressure test structure comprises a hydraulic cylinder (1), a pair of guide rods (2), a mounting plate (3), a sensor (9), a pair of sliding rods (10), a display screen (11), a pair of stop blocks and a straight groove plate (8);

The hydraulic cylinder (1) set up in the diaphragm upside of U type frame (4), the output of pneumatic cylinder (1) passes U type frame (4) and fixed connection mounting panel (3), mounting panel (3) upside both ends are fixed connection respectively guide arm (2), a pair of guide arm (2) upper end passes the diaphragm of U type frame (4), display screen (11) set up in mounting panel (3) one side, a pair of slide bar (10) upper end passes mounting panel (3) and fixed connection correspond the dog, a pair of slide bar (10) lower extreme fixed connection straight channel plate (8), sensor (9) set up in straight channel plate (8) upside, sensor (9) are located mounting panel (3) below.

2. The device for testing the local bearing capacity of the gangue concrete short column with the round steel tube, which is disclosed in claim 1, is characterized in that the pressure head dismounting structure comprises a screw rod (15), a knob, a pair of sliding blocks (13), a pair of L-shaped rods (7) and a sleeve (6);

The utility model discloses a straight flute plate (8) downside middle part fixed connection sleeve (6), sleeve (6) both sides are equipped with corresponding guide hole, both ends are bearing connection respectively in straight flute plate (8) lead screw (15) one end, lead screw (15) are equipped with two sections screw threads that revolve opposite directions, lead screw (15) one end is passed straight flute plate (8) and fixed connection the knob, a pair of slider (13) sliding arrangement in straight flute plate (8), lead screw (15) both ends respectively threaded connection corresponds slider (13), a pair of slider (13) downside respectively fixed connection corresponds L shape pole (7), a pair of L shape pole (7) the horizontal pole relative one end is aligned with corresponding guide hole respectively.

3. A test apparatus for the local bearing capacity of a gangue concrete short column with round steel tubes as claimed in claim 2, wherein the opposite ends of the cross bars of the pair of L-shaped bars (7) are arc-shaped surfaces which are matched with the annular grooves of each mounting post (14).

4. The device for testing the local bearing capacity of the gangue concrete short column with the round steel tube, which is disclosed in claim 3, is characterized in that hard rubber layers are coated on one side, opposite to the arc-shaped surface, of the pair of L-shaped rods (7).