Device and method for detecting reverse bending performance of reinforcing steel bar

Abstract

The invention discloses a steel bar reverse bending performance detection device and method, and relates to the technical field of steel bar detection. According to the detection method, an experiment table operation box is included, a controller is fixedly mounted on the top surface of the experiment table operation box, jacking equipment is mounted on the top surface of the experiment table operation box, a mounting plate is fixedly connected to the top surface of the experiment table operation box, and a limiting plate is slidably connected to the top surface of the mounting plate; according to the detection method, the detection accuracy can be improved, the detection steps are refined and standardized through the improved detection method, and the detection accuracy is improved from sample preparation to bending operation to result observation. Each link is strictly controlled, and the stress state of the reinforcing steel bar in actual engineering can be more accurately simulated, so that the reverse bending performance of the reinforcing steel bar is more accurately detected, and the detection error is reduced.

Description

Technical Field

[0001] The present invention relates to the technical field of steel bar detection, and in particular to a detection method for a steel bar reverse bending performance detection device. Background Art

[0002] In the field of construction engineering, steel bars are the main building materials, and their mechanical properties are crucial to the safety of the structure. With the increasing complexity of building structures and the continuous improvement of quality requirements, the traditional steel bar bending performance testing method has certain limitations in evaluating the quality of steel bars;

[0003] Traditional steel bar bending detection mainly focuses on forward bending, and does not adequately consider the reverse bending that steel bars may experience in actual complex stress environments. Under special working conditions such as earthquakes and structural deformations, steel bars may experience reverse bending. If the reverse bending performance of the steel bars is poor, it will cause cracks to appear prematurely in the structure or even damage. Some existing reverse bending detection methods may have problems such as irregular operation, inaccurate angle control, and significant damage to the specimen, which affect the reliability of the test results and cannot meet the needs of modern construction projects for accurate detection of steel bar quality. Summary of the invention

[0004] The purpose of the present invention is to solve at least one of the technical problems existing in the prior art and to provide a detection method for a steel bar reverse bending performance detection device, which can solve the problems of irregular operation and inaccurate angle control.

[0005] To achieve the above-mentioned purpose, the present invention provides the following technical solutions: a device for detecting the reverse bending performance of steel bars, comprising a laboratory bench operation box, a controller is fixedly installed on the top surface of the laboratory bench operation box, a tightening device is installed on the top surface of the laboratory bench operation box, a mounting plate is fixedly connected to the top surface of the laboratory bench operation box, a limit plate is slidably connected to the top surface of the mounting plate, the limit plate is fixedly installed to the output end of the tightening device, a limit rod is installed on the top surface of the mounting plate, a rotating disk is rotatably connected to the top surface of the laboratory bench operation box, a plurality of mounting holes are opened on the top surface of the rotating disk, a bending center column is installed in the mounting hole at the center of the rotating disk, a stop pin is installed in the mounting hole of the rotating disk, a protective cover is hinged on the outside of the laboratory bench operation box, and a steel bar sample is placed on the top surface of the rotating disk.

[0006] Preferably, a method for testing the reverse bending performance of steel bars comprises the following specific method steps: S1 preparation before testing;

[0007] S2 Sample preparation: Select steel samples of specified length and diameter, ensure that the samples have no obvious bending or damage defects, number the samples and measure and record their original dimensions;

[0008] S3 environment setting: ensure that the detection environment temperature is within the specified range;

[0009] S4 Install the specimen: Fix one end of the steel specimen firmly on the fixture of the bending device, making sure that the axis of the specimen coincides with the center line of the bending device;

[0010] S5 Forward bending: Start the bending device and perform forward bending operation according to the specified bending angle (such as the angle determined according to the grade and diameter of the steel bar) and bending speed. During the bending process, closely observe whether there is any abnormality in the specimen;

[0011] S6: Adjust the sample: After completing the forward bending, carefully take the sample out of the bending device, adjust the position of the sample without affecting the bending state of the sample, and prepare for reverse bending;

[0012] S7 Reverse bending: Reinstall the specimen into the bending device so that the convex surface of the specimen faces the opposite direction, start the bending device again, and perform reverse bending at the specified reverse bending angle (usually a certain degree smaller than the forward bending angle) and speed. During the process, pay attention to the changes in the bending part of the specimen;

[0013] S8 detection post-processing.

[0014] Preferably, the S1 pre-test preparation includes equipment inspection: checking the reverse bending test equipment, including whether the rotating parts of the bending device are flexible, whether the angle measuring device is accurate, and whether the clamping force of the clamp is appropriate and can firmly fix the steel bar.

[0015] Preferably, the S3 environment is set up, and the ambient temperature is generally 10-35°C. If there are special requirements for the temperature, the ambient temperature control device needs to be adjusted.

[0016] Preferably, the post-test processing of S8 includes observation and measurement: after the bending is completed, carefully observe whether there are cracks or fractures at the bending part of the sample, and a magnifying glass tool can be used to assist the inspection. Measure the relevant dimensions of the sample after bending, such as the bending diameter.

[0017] Preferably, the S8 post-test processing also includes result recording and determination: recording the test results, including the sample number, forward and reverse bending angles, and sample status information after bending. Determine whether the reverse bending performance of the steel bar is qualified according to relevant standards.

[0018] Compared with the prior art, the present invention has the following beneficial effects:

[0019] 1. The detection method of the steel bar reverse bending performance detection device can improve the detection accuracy: the improved detection method refines and standardizes the detection steps, from sample preparation to bending operation to result observation, each link is strictly controlled, and can more accurately simulate the stress state of steel bars in actual projects, thereby more accurately detecting the reverse bending performance of steel bars and reducing detection errors.

[0020] 2. The detection method of the steel bar reverse bending performance detection device can ensure the quality of the project: by accurately detecting the reverse bending performance of the steel bar, it is ensured that the quality of the steel bars used in the construction project meets higher standards, which is conducive to improving the structural stability of the building under complex stress conditions, reducing the structural safety hazards caused by steel bar quality problems, and protecting people’s lives and property.

[0021] 3. The detection method of the steel bar reverse bending performance detection device standardizes the operation process: the detection steps are specified in detail, including equipment inspection, sample installation, bending operation, etc., providing a clear and unified operation guide for detection personnel, which is helpful to ensure the consistency of results between different laboratories or detection institutions and promote the improvement of the detection level of the entire industry. At the same time, this method reduces the impact of sample damage on the results: during the operation, it emphasizes the correct handling of the sample and the protection during the bending process to avoid additional damage to the sample due to unreasonable operation, and ensure that the test results truly reflect the reverse bending performance of the steel bar itself.

[0022] 4. The detection method of the steel bar reverse bending performance detection device optimizes the result evaluation through post-detection processing: it clarifies the content of observation and measurement after detection, as well as the result recording and judgment method, making the detection result more convincing, helping to timely discover steel bar quality problems and avoid unqualified steel bars from entering the construction market. BRIEF DESCRIPTION OF THE DRAWINGS

[0023] The present invention is further described below in conjunction with the accompanying drawings and embodiments:

[0024] Figure 1 It is a schematic diagram of the structure of the device body of the present invention;

[0025] Figure numerals: 1. Experimental bench control box; 2. Controller; 3. Tightening device; 4. Limit plate; 5. Mounting plate; 6. Limit rod; 7. Rotating disk; 8. Bending center column; 9. Stop pin; 10. Protective cover; 11. Steel bar sample. DETAILED DESCRIPTION

[0026] This section will describe in detail the specific embodiments of the present invention. The preferred embodiments of the present invention are shown in the accompanying drawings. The purpose of the accompanying drawings is to supplement the description of the text part of the specification with graphics, so that people can intuitively and vividly understand each technical feature and the overall technical solution of the present invention, but it cannot be understood as a limitation on the scope of protection of the present invention.

[0027] In the description of the present invention, it should be understood that descriptions involving orientations, such as up, down, front, back, left, right, etc., and orientations or positional relationships indicated are based on the orientations or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be understood as a limitation on the present invention.

[0028] In the description of the present invention, "greater than", "less than", "exceed" etc. are understood as not including the number itself, and "above", "below", "within" etc. are understood as including the number itself. If there is a description of "first" or "second", it is only used for the purpose of distinguishing technical features, and cannot be understood as indicating or implying relative importance or implicitly indicating the number of the indicated technical features or implicitly indicating the order of the indicated technical features.

[0029] In the description of the present invention, unless otherwise clearly defined, terms such as setting, installing, connecting, etc. should be understood in a broad sense, and technicians in the relevant technical field can reasonably determine the specific meanings of the above terms in the present invention based on the specific content of the technical solution.

[0030] See also Figure 1 The present invention provides a technical solution: a steel bar reverse bending performance detection device, comprising a laboratory bench operation box 1, a controller 2 is fixedly installed on the top surface of the laboratory bench operation box 1, a tightening device 3 is installed on the top surface of the laboratory bench operation box 1, a mounting plate 5 is fixedly connected to the top surface of the laboratory bench operation box 1, a limit plate 4 is slidably connected to the top surface of the mounting plate 5, the limit plate 4 is fixedly installed with the output end of the tightening device 3, a limit rod 6 is installed on the top surface of the mounting plate 5, a rotating disk 7 is rotatably connected to the top surface of the laboratory bench operation box 1, a plurality of mounting holes are opened on the top surface of the rotating disk 7, a bending center column 8 is installed in the mounting hole at the center of the rotating disk 7, a stop pin 9 is installed in the mounting hole of the rotating disk 7, a protective cover 10 is hinged on the outside of the laboratory bench operation box 1, and a steel bar sample 11 is placed on the top surface of the rotating disk 7. The above structure is the main structure of the existing steel bar reverse bending detection device.

[0031] Furthermore, a method for testing the reverse bending performance of steel bars includes the following specific method steps: S1: preparation before testing;

[0032] Among them, S1 pre-test preparation includes equipment inspection: check the reverse bending test equipment, including whether the rotating parts of the bending device are flexible, whether the angle measuring device is accurate, and whether the clamping force of the clamp is appropriate and can firmly fix the steel bar;

[0033] S2 Sample preparation: Select steel samples of specified length and diameter, ensure that the samples have no obvious defects such as bending and damage, number the samples and measure and record their original dimensions;

[0034] S3 environment setting: ensure that the detection environment temperature is within the specified range;

[0035] Among them, S3 environment setting, the ambient temperature is generally 10-35℃. If there are special requirements for the temperature, the ambient temperature control equipment needs to be adjusted;

[0036] S4 Install the specimen: Fix one end of the steel specimen firmly on the fixture of the bending device, making sure that the axis of the specimen coincides with the center line of the bending device;

[0037] S5 Forward bending: Start the bending device and perform forward bending operation according to the specified bending angle (such as the angle determined according to the grade and diameter of the steel bar) and bending speed. During the bending process, closely observe whether there is any abnormality in the specimen;

[0038] S6: Adjust the sample: After completing the forward bending, carefully take the sample out of the bending device, adjust the position of the sample without affecting the bending state of the sample, and prepare for reverse bending;

[0039] S7 Reverse bending: Reinstall the specimen into the bending device so that the convex surface of the specimen faces the opposite direction, start the bending device again, and perform reverse bending at the specified reverse bending angle (usually a certain degree smaller than the forward bending angle) and speed. During the process, pay attention to the changes in the bending part of the specimen;

[0040] S8 post-detection processing;

[0041] Among them, S8 post-test processing includes observation and measurement: After the bending is completed, carefully observe whether there are cracks, fractures, etc. at the bending part of the sample, and use tools such as magnifying glasses to assist in the inspection. Measure the relevant dimensions of the sample after bending, such as the bending diameter, etc.;

[0042] Among them, S8 post-test processing also includes result recording and judgment: record the test results, including sample number, forward and reverse bending angles, sample status after bending, etc. Determine whether the reverse bending performance of the steel bar is qualified according to relevant standards;

[0043] Furthermore, this detection method can improve detection accuracy: the improved detection method refines and standardizes the detection steps, from sample preparation to bending operation to result observation, each link is strictly controlled, and can more accurately simulate the stress state of steel bars in actual engineering, thereby more accurately detecting the reverse bending performance of steel bars and reducing detection errors.

[0044] Furthermore, this detection method can ensure the quality of the project: by accurately detecting the reverse bending performance of steel bars, it can ensure that the quality of steel bars used in construction projects meets higher standards, which is conducive to improving the structural stability of buildings under complex stress conditions, reducing structural safety hazards caused by steel bar quality problems, and protecting people’s lives and property.

[0045] Furthermore, the operating process is standardized: the testing steps are specified in detail, including equipment inspection, sample installation, bending operations, etc., providing testers with a clear and unified operating guide, which helps to ensure the consistency of results between different laboratories or testing institutions and promotes the improvement of the testing level of the entire industry. At the same time, this method reduces the impact of sample damage on the results: during the operation, emphasis is placed on the correct handling of the sample and protection during the bending process to avoid additional damage to the sample due to unreasonable operation, and to ensure that the test results truly reflect the reverse bending performance of the steel bar itself.

[0046] Furthermore, the result evaluation is optimized through post-test processing: the content of post-test observation and measurement, as well as the method of recording and judging the results are clarified, making the test results more convincing, helping to timely discover steel quality problems and avoid unqualified steel bars from entering the construction market.

[0047] The embodiments of the present invention are described in detail above with reference to the accompanying drawings. However, the present invention is not limited to the above embodiments. Various changes can be made within the knowledge scope of ordinary technicians in the technical field without departing from the purpose of the present invention.

Claims

1. A steel bar reverse bending performance testing device, comprising a test bench operating box (1), characterized in that: The top surface of the test bench operation box (1) is fixedly mounted with a controller (2); the top surface of the test bench operation box (1) is mounted with a tightening device (3); the top surface of the test bench operation box (1) is fixedly connected with a mounting plate (5); the top surface of the mounting plate (5) is slidably connected with a limit plate (4); the limit plate (4) is fixedly mounted with an output end of the tightening device (3); the top surface of the mounting plate (5) is mounted with a limit rod (6); the top surface of the test bench operation box (1) is rotatably connected with a rotating disk (7); the top surface of the rotating disk (7) is provided with a plurality of mounting holes; a bent center column (8) is mounted in the mounting hole at the center of the rotating disk (7); a stop pin (9) is mounted in the mounting hole of the rotating disk (7); a protective cover (10) is hingedly connected to the outside of the test bench operation box (1); and a steel bar sample (11) is placed on the top surface of the rotating disk (7).

2. A method for detecting the reverse bending performance of a steel bar, characterized in that: The method includes the following specific steps: S1 preparation before testing; S2 Sample preparation: Select steel samples of specified length and diameter, ensure that the samples have no obvious bending or damage defects, number the samples and measure and record their original dimensions; S3 environment setting: ensure that the detection environment temperature is within the specified range; S4 Install the specimen: Fix one end of the steel specimen firmly on the fixture of the bending device, making sure that the axis of the specimen coincides with the center line of the bending device; S5 Forward bending: Start the bending device and perform forward bending operation according to the specified bending angle (such as the angle determined according to the grade and diameter of the steel bar) and bending speed. During the bending process, closely observe whether there is any abnormality in the specimen; S6: Adjust the sample: After completing the forward bending, carefully take the sample out of the bending device, adjust the position of the sample without affecting the bending state of the sample, and prepare for reverse bending; S7 Reverse bending: Reinstall the specimen into the bending device so that the convex surface of the specimen faces the opposite direction, start the bending device again, and perform reverse bending at the specified reverse bending angle (usually a certain degree smaller than the forward bending angle) and speed. During the process, pay attention to the changes in the bending part of the specimen; S8 post-detection processing.

3. A method for detecting the reverse bending performance of a steel bar according to claim 2, characterized in that: The S1 pre-test preparation includes equipment inspection: check the reverse bending test equipment, including whether the rotating parts of the bending device are flexible, whether the angle measuring device is accurate, and whether the clamping force of the clamp is appropriate and can firmly fix the steel bars.

4. A method for detecting the reverse bending performance of a steel bar according to claim 2, characterized in that: The S3 environment setting is generally 10-35°C. If there are special requirements for temperature, the environment temperature control device needs to be adjusted.

5. A method for detecting the reverse bending performance of a steel bar according to claim 2, characterized in that: The post-processing of S8 inspection includes observation and measurement: After bending, carefully observe whether there are cracks or fractures at the bending part of the specimen, and use a magnifying glass tool to assist in the inspection. Measure the relevant dimensions of the specimen after bending, such as the bending diameter.

6. A method for detecting the reverse bending performance of a steel bar according to claim 2, characterized in that: The S8 post-test processing also includes result recording and determination: recording the test results, including the sample number, forward and reverse bending angles, and sample status information after bending. Determine whether the reverse bending performance of the steel bar is qualified according to relevant standards.

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