Auxiliary device for testing uniaxial compression mechanical property of seawater sea sand concrete

Abstract

The utility model discloses an auxiliary device for testing uniaxial compression mechanical properties of seawater and sea sand concrete, and relates to the field of testing devices for mechanical properties of concrete. Comprising a first frame assembly and a second frame assembly, the first frame assembly comprises two upper fixing frames and a fixing frame, the second frame assembly comprises two lower fixing frames and a support plate, the fixing frame can be adjusted along the width and is used for fixing a displacement meter, and the other end of the displacement meter abuts against the support plate. When the auxiliary device needs to be installed on a concrete rectangular sample, the upper fixing frame and the lower fixing frame are fixedly connected to the concrete rectangular sample in a sleeved mode, then the displacement meter is fixed to the fixing frame, installation of the auxiliary device can be achieved, installation is very convenient, and when the device is damaged, only the upper fixing frame or the lower fixing frame needs to be replaced. The detachable upper fixing frame and the detachable lower fixing frame are high in adaptability to concrete rectangular samples of different sizes, and in addition, the clamping opening can be adjusted along the width, so that the device can adapt to displacement meters of different specifications.

Description

Technical Field

[0001] This utility model relates to the field of concrete mechanical property testing, and in particular to an auxiliary device for testing the uniaxial compressive mechanical properties of seawater sand concrete. Background Technology

[0002] Concrete is a building material composed of water, cement, and coarse aggregate. It is the world's largest manufactured material in terms of mass, with an annual consumption of approximately 30 billion tons. This results in a huge consumption of river sand and freshwater resources. Given the vast reserves of seawater sand on Earth, people are attempting to use seawater sand instead of freshwater river sand in building construction to protect the environment. In construction, concrete must withstand enormous axial forces. Therefore, the mechanical properties of concrete using seawater sand under axial compression are crucial for various aspects of concrete component load-bearing capacity calculation, force analysis, and structural design.

[0003] In existing technologies, general-purpose material testing machines are typically used to measure the stress-strain relationship of concrete. For rectangular concrete specimens, an auxiliary device is installed at the center of one side to fix a displacement gauge. However, this auxiliary device is fixed to the rectangular concrete specimen as a single unit, making disassembly and installation very inconvenient. If the device is damaged, the entire unit needs to be replaced. Furthermore, it has poor compatibility with rectangular concrete specimens of different sizes, and the fixture for fixing the displacement gauge is not adjustable, only compatible with one type of displacement gauge. Utility Model Content

[0004] This invention addresses the problems of difficult disassembly and installation of testing auxiliary devices for concrete mechanical property testing, the need for complete replacement when the device is damaged, and poor adaptability to rectangular concrete samples of different sizes. It provides a testing auxiliary device for the uniaxial compressive mechanical properties of seawater sand concrete.

[0005] To achieve the above objectives, this utility model provides the following technical solution:

[0006] An auxiliary device for testing the uniaxial compressive mechanical properties of seawater sand concrete includes a first frame assembly and a second frame assembly. The first frame assembly includes two detachable and fixed upper fixed frames and a fixing bracket fixed to the first frame assembly. The second frame assembly includes two detachable and fixed lower fixed frames and a support plate fixed to the second frame assembly. The fixing bracket is provided with a clamping opening that can be adjusted in width direction. The clamping opening is used to clamp and fix a displacement gauge. The support plate is used to abut against the end of the displacement gauge away from the fixing bracket.

[0007] As described above, the auxiliary device for testing the uniaxial compressive mechanical properties of seawater sand concrete includes a fixing plate and a fixing gripper fixed to one end of the fixing plate. The clamping opening is located on the fixing gripper, and the other end of the fixing plate is fixed to the upper fixing frame.

[0008] As described above, the auxiliary device for testing the uniaxial compressive mechanical properties of seawater sand concrete includes a groove on the fixed plate that extends along its width. The fixed gripper includes a first gripper frame and a second gripper frame, and the fixed gripper is provided with a gripper bolt. The gripper bolt is used to pass through the groove to fix the first gripper frame and the second gripper frame to the fixed plate. The clamping opening is formed between the first gripper frame and the second gripper frame. The first gripper frame and the second gripper frame can be adjusted along the groove to adjust the size of the clamping opening in the width direction.

[0009] As described above, the auxiliary device for testing the uniaxial compressive mechanical properties of seawater sand concrete includes an upper fixing frame comprising an L-shaped main body, with upper fixing plates extending from both ends of the L-shaped main body, and upper fixing members provided on the upper fixing plates for fixing the two upper fixing plates.

[0010] As described above, the auxiliary device for testing the uniaxial compressive mechanical properties of seawater sand concrete includes a lower fixing frame comprising an L-shaped main body, with lower fixing plates extending from both ends of the L-shaped main body, and lower fixing members provided on the lower fixing plates for fixing the two lower fixing plates.

[0011] As described above, the auxiliary device for testing the uniaxial compressive mechanical properties of seawater sand concrete includes a support plate and a support plate. One end of the support plate is fixed to the support plate, and the other end is fixed to the lower fixed frame. The support plate is used to abut against the displacement gauge.

[0012] The auxiliary device for testing the uniaxial compressive mechanical properties of seawater sand concrete as described above includes multiple tension bolts, which are used to fix the first frame assembly and the second frame assembly to the rectangular concrete specimen.

[0013] In the aforementioned auxiliary device for testing the uniaxial compressive mechanical properties of seawater sand concrete, the support plate and the backing plate are perpendicular to each other.

[0014] As described above, the auxiliary device for testing the uniaxial compressive mechanical properties of seawater sand concrete has four fixing frames and four support plates.

[0015] Compared with the prior art, the beneficial effects of this technical solution are as follows: After adopting the structure of this utility model, since the first frame and the second frame are designed separately, when it is necessary to install the auxiliary device on the rectangular concrete sample, it is only necessary to fix the two upper fixing frames to each other and the two lower fixing frames to each other and fit them together on the rectangular concrete sample, and then fix the displacement meter on the fixing frame. This can realize the installation of the auxiliary device for testing the uniaxial compressive mechanical properties of seawater sand concrete. The installation is very convenient. When the device is damaged, it is only necessary to replace a single upper fixing frame or lower fixing frame. Moreover, the detachable upper fixing frame and lower fixing frame have high adaptability to rectangular concrete samples of different sizes. In addition, the clamping opening can be adjusted along the width to adapt to displacement meters of different specifications.

[0016] Additional aspects and advantages of this invention will be set forth in part in the description which follows, and in part will be obvious from the description, or may be learned by practice of the invention. Attached Figure Description

[0017] To more clearly illustrate the technical solutions in the embodiments of this utility model or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this utility model. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0018] Figure 1 This is a three-dimensional structural schematic diagram of the present invention;

[0019] Figure 2 This is a schematic diagram of the fixing frame structure of this utility model;

[0020] Figure 3 This is a three-dimensional structural diagram of the present invention with a displacement gauge. Detailed Implementation

[0021] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0022] like Figures 1 to 3The auxiliary device for testing the uniaxial compressive mechanical properties of seawater sand concrete shown includes a first frame assembly 1 and a second frame assembly 2. The first frame assembly 1 includes two detachable and fixed upper fixing frames 12 and a fixing bracket 11 fixed on the first frame assembly 1. The second frame assembly 2 includes two detachable and fixed lower fixing frames 22 and a support plate 21 fixed on the second frame assembly 2. The fixing bracket 11 is provided with a clamping opening 13 that can be adjusted in width direction. The clamping opening 13 is used to clamp and fix a displacement gauge 100. The support plate 21 is used to abut against the end of the displacement gauge 100 away from the fixing bracket 11. With the structure of this utility model, since the first frame and the second frame are designed separately, when it is necessary to install the auxiliary device on the concrete rectangular sample 200, it is only necessary to fix the two upper fixing frames to each other and the two lower fixing frames to each other and fit them together on the concrete rectangular sample 200, and then fix the displacement meter on the fixing frame. This makes the installation of the auxiliary device for testing the uniaxial compressive mechanical properties of seawater sand concrete very convenient. When the device is damaged, it is only necessary to replace a single upper fixing frame or a lower fixing frame. Moreover, the detachable upper fixing frame and lower fixing frame have high adaptability to concrete rectangular samples 200 of different sizes. In addition, the clamping opening can be adjusted along the width to adapt to displacement meters of different specifications.

[0023] As a specific implementation and not a limitation, in order to adapt to different displacement gauges, the fixing frame 11 includes a fixing plate 112 and a fixing gripper 111 fixed to one end of the fixing plate 112, the clamping port 13 is provided on the fixing gripper 111, and the other end of the fixing plate 112 is fixed to the upper fixing frame 12. The fixing plate 112 is provided with a sliding groove 1121, which extends along the width direction. The fixing gripper 111 includes a first gripper frame 1111 and a second gripper frame 1112. The fixing gripper 111 is provided with a gripper bolt 1113, which is used to pass through the sliding groove 1121 to fix the first gripper frame 1111 and the second gripper frame 1112 to the fixing plate 112. The clamping opening 13 is formed between the first gripper frame 1111 and the second gripper frame 1112. The first gripper frame 1111 and the second gripper frame 1112 can be adjusted along the sliding groove 1121 to adjust the size of the clamping opening 13 in the width direction. When the width of the clamping opening 13 needs to be adjusted, simply loosen the gripper bolt 1113 and adjust the first gripper frame 1111 and the second gripper frame 1112 along the slide groove until they are adjusted to the appropriate position. Then tighten the gripper bolt 1113 to fix the first gripper frame 1111 and the second gripper frame 1112, thereby adjusting the clamping opening 13 for clamping displacement gauges of different models and specifications.

[0024] Furthermore, in order to better fix the first frame assembly 1 to the rectangular concrete specimen 200, the upper fixing frame 12 includes an L-shaped upper fixing frame body 121. Upper fixing plates 122 extend from both ends of the L-shaped upper fixing frame body 121. Upper fixing plates 122 are provided with upper fixing members 3 for fixing the two upper fixing plates 122. The upper fixing member 3 is a high-strength bolt. When fixing the first frame assembly 1 to the rectangular concrete specimen 200, the two upper fixing frames 12 are placed against the rectangular concrete specimen 200. The L-shaped upper fixing frame body 121 of the upper fixing frame 12 can fit well against the rectangular concrete specimen 200. Then, the upper fixing plates 122 extending from the two L-shaped upper fixing frames 121 are bolted together using the upper fixing member 3.

[0025] Furthermore, to better fix the second frame assembly 2 to the rectangular concrete specimen 200, the lower fixing frame 22 includes an L-shaped lower fixing frame body 221. Lower fixing plates 222 extend from both ends of the L-shaped lower fixing frame body 221. Lower fixing plates 222 are provided with lower fixing members 5 for fixing the two lower fixing plates 222. The lower fixing member 5 is a high-strength bolt. When fixing the second frame assembly 2 to the rectangular concrete specimen 200, the two lower fixing frames 22 are placed against the rectangular concrete specimen 200. The L-shaped lower fixing frame body 221 in the lower fixing frame 22 can fit well against the rectangular concrete specimen 200. The lower fixing plates 222 extending from the two L-shaped lower fixing frames 221 are then bolted together using the lower fixing members 5.

[0026] Furthermore, the support plate 21 includes a support plate 211 and a support plate 212. One end of the support plate 211 is fixed to the support plate 212, and the other end is fixed to the lower fixing frame 22. The support plate 212 is used to abut against the displacement gauge 100. The support plate 211 and the support plate 212 are perpendicular to each other.

[0027] As a specific implementation and not a limitation, to ensure more stable installation of the first frame assembly 1 and the second frame assembly 2 on the concrete rectangular specimen 200, a plurality of tension bolts 4 are included. These tension bolts 4 are used to fix the first frame assembly 1 and the second frame assembly 2 to the concrete rectangular specimen 200. When the first frame assembly 1 is fitted onto the concrete rectangular specimen 200, the tension bolts 4 on the first frame assembly 1 are fixed by threaded engagement, and the other end of each tension bolt 4 abuts against the concrete rectangular specimen 200. Adjusting the tension bolts 4 fixes the first frame assembly 1 to the concrete rectangular specimen 200.

[0028] Furthermore, four fixing frames 11 and four support plates 21 are provided. All four fixing frames 11 and support plates 21 can be used to fix displacement gauges. To ensure more accurate data during testing, at least two displacement gauges are fixed to the fixing frames 11, and the displacement gauges are positioned opposite each other. The oppositely positioned displacement gauges can uniformly detect the stress on the rectangular concrete sample 200 in different directions under downward pressure.

[0029] The specific working principle of this utility model is as follows:

[0030] like Figure 3 As shown, two upper fixing frames 12 are attached to the rectangular concrete specimen 200 and fixed by fixing members 3. Two lower fixing frames 22 are attached to the rectangular concrete specimen 200 and fixed by fixing members 3. Then, they are further fixed to the rectangular concrete specimen 200 by tensioning bolts 4. The displacement gauge is fixed on the fixing frame 11, and the other end of the displacement gauge abuts against the support plate 21. When an axial force is applied to the rectangular concrete specimen 200, the rectangular concrete specimen 200 deforms under the action of the force, so that the displacement gauge detects the amount of deformation of the rectangular concrete specimen 200.

[0031] It will be apparent to those skilled in the art that this invention is not limited to the details of the exemplary embodiments described above, and that it can be implemented in other specific forms without departing from the spirit or essential characteristics of this invention. Therefore, the embodiments should be considered illustrative and non-limiting in all respects, and the scope of this invention is defined by the appended claims rather than the foregoing description. Thus, it is intended that all variations falling within the meaning and scope of equivalents of the claims be included within this invention. No reference numerals in the claims should be construed as limiting the scope of the claims.

Claims

1. An auxiliary device for testing the uniaxial compressive mechanical properties of seawater sand concrete, characterized in that, The system includes a first frame assembly (1) and a second frame assembly (2). The first frame assembly (1) includes two detachable and fixed upper fixing frames (12) and a fixing bracket (11) fixed on the first frame assembly (1). The second frame assembly (2) includes two detachable and fixed lower fixing frames (22) and a support plate (21) fixed on the second frame assembly (2). The fixing bracket (11) is provided with a clamping port (13) that can be adjusted in width direction. The clamping port (13) is used to clamp and fix the displacement gauge (100). The support plate (21) is used to abut against the end of the displacement gauge (100) away from the fixing bracket (11).

2. The auxiliary device for testing the uniaxial compressive mechanical properties of seawater sand concrete according to claim 1, characterized in that, The fixing frame (11) includes a fixing plate (112) and a fixing gripper (111) fixed to one end of the fixing plate (112). The clamping port (13) is provided on the fixing gripper (111), and the other end of the fixing plate (112) is fixed to the upper fixing frame (12).

3. The auxiliary device for testing the uniaxial compressive mechanical properties of seawater sand concrete according to claim 2, characterized in that, The fixed plate (112) is provided with a sliding groove (1121) which extends along the width direction. The fixed gripper (111) includes a first gripper frame (1111) and a second gripper frame (1112). The fixed gripper (111) is provided with a gripper bolt (1113). The gripper bolt (1113) is used to pass through the sliding groove (1121) to fix the first gripper frame (1111) and the second gripper frame (1112) to the fixed plate (112). The clamping opening (13) is formed between the first gripper frame (1111) and the second gripper frame (1112). The first gripper frame (1111) and the second gripper frame (1112) can be adjusted along the sliding groove (1121) to adjust the size of the clamping opening (13) in the width direction.

4. The auxiliary device for testing the uniaxial compressive mechanical properties of seawater sand concrete according to claim 1, characterized in that, The upper fixing frame (12) includes an upper fixing frame L-shaped body (121), and upper fixing plates (122) are provided at both ends of the upper fixing frame L-shaped body (121). The upper fixing plates (122) are provided with upper fixing members (3) for fixing the two upper fixing plates (122).

5. The auxiliary device for testing the uniaxial compressive mechanical properties of seawater sand concrete according to claim 1, characterized in that, The lower fixing frame (22) includes an L-shaped body (221) of the lower fixing frame, and lower fixing plates (222) are provided at both ends of the L-shaped body (221). The lower fixing plates (222) are provided with lower fixing members (5) for fixing the two lower fixing plates (222).

6. The auxiliary device for testing the uniaxial compressive mechanical properties of seawater sand concrete according to claim 1, characterized in that, The support plate (21) includes a support plate (211) and a support plate (212). One end of the support plate (211) is fixed to the support plate (212), and the other end is fixed to the lower fixed frame (22). The support plate (212) is used to abut against the displacement gauge (100).

7. The auxiliary device for testing the uniaxial compressive mechanical properties of seawater sand concrete according to claim 1, characterized in that, It includes multiple tension bolts (4) for fixing the first frame assembly (1) and the second frame assembly (2) to the concrete rectangular specimen (200).

8. The auxiliary device for testing the uniaxial compressive mechanical properties of seawater sand concrete according to claim 6, characterized in that, The support plate (211) is perpendicular to the support plate (212).

9. The auxiliary device for testing the uniaxial compressive mechanical properties of seawater sand concrete according to claim 1, characterized in that, The fixed frame (11) and the support plate (21) are each provided with 4.

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