Risk assessment model based on concrete stress and strain
By designing a concrete stress and strain risk assessment model including installation base, mechanical detection device and mating mechanism, the coordination of a multi-step motor and a sliding mechanism is used to achieve accurate positioning and multi-point measurement of the concrete model, solving the problems of detection accuracy and comprehensiveness of data in the prior art, significantly improving the accuracy and comprehensiveness of the test data, and ensuring the safety performance of the concrete structure.
Patent Information
- Application Number
- CN202510169581.X
- Authority / Receiving Office
- CN · China
- Patent Type
- Applications(China)
- Current Assignee / Owner
- Filing Date
- 2025-02-17
- Publication Date
- 2025-04-29
- Estimated Expiration
- Not applicable · inactive patent
AI Technical Summary
In the stress and strain detection of concrete structures, the prior art has problems such as limited testing range, low accuracy, incomplete data, and poor adaptability in complex environments, making it difficult to achieve all-round automated testing.
A risk assessment model based on concrete stress and strain was designed, including installation base, mechanical detection device and mating mechanism. Through the cooperation of the multi-step motor and the sliding mechanism, accurate positioning and multi-point measurement of different positions of the concrete model can be achieved, and a complete stress and strain distribution curve can be obtained.
It significantly improves the accuracy and comprehensiveness of the test data, eliminates human interference factors, and ensures the safety performance of concrete structures in practical applications.
Smart Images
Figure CN119901583A_ABST
Abstract
Description
Technical Field
[0001] The present application relates to the technical field of assessment models, and more specifically, to a risk assessment model based on concrete stress and strain. Background Art
[0002] As an important building material, the mechanical properties and durability of concrete are crucial to the safety of building structures. However, due to the complexity of concrete materials themselves and the variability of the use environment, concrete structures may have stress and strain problems during long-term use, leading to structural safety hazards. Therefore, accurate stress and strain assessment of concrete structures is an important part of ensuring building safety.
[0003] At present, there are two main methods for evaluating concrete stress and strain: static and dynamic. The static evaluation method measures the stress and strain characteristics of concrete through loading tests, while the dynamic evaluation method monitors the stress and strain changes of concrete structures in real time through sensors and data acquisition systems. Although these methods can provide certain reference data, they still have problems such as limited test range, low accuracy, and incomplete data in practical applications.
[0004] In recent years, with the continuous advancement of technology, fully automated testing systems have gradually been applied to the detection of concrete stress and strain. By integrating a variety of sensors and automated devices, multi-directional and multi-angle detection of concrete structures can be achieved, providing more comprehensive and accurate data support. However, the current automated testing system may still be affected by human operation during the detection process, resulting in errors in the test results. In addition, the existing automated testing system has poor adaptability in complex environments and is difficult to meet the detection needs under different working conditions.
[0005] In summary, how to achieve all-round automated detection of stress and strain in concrete structures, eliminate human interference factors, and improve the accuracy and comprehensiveness of test data has become a technical problem that needs to be solved urgently. Summary of the invention
[0006] In order to overcome a series of defects existing in the prior art, the purpose of the present application is to provide a risk assessment model based on concrete stress and strain in response to the above-mentioned problems, including a mounting base 1, a mechanical detection device 2 and a matching mechanism 4, wherein a detection displacement mechanism 3 is fixedly installed at the end of the mechanical detection device 2; the matching mechanism 4 is installed on the mounting base 1, and the matching mechanism 4 includes a gap plate 5 rotatably connected to the mounting base 1, and a slot 6 is provided on the top surface of the gap plate 5, and an insertion frame 7 is inserted and matched in the slot 6, and a concrete model 8 is connected and fixed to the top surface of the insertion frame 7, and the concrete model 8 is cast in proportion as needed.
[0007] Furthermore, the mating mechanism 4 also includes a driving frame 9 connected and fixed to the gap plate 5, the driving frame 9 is internally slidably mated with a driving column 10, the lower end of the driving column 10 is connected and fixed with a mating plate 15, the other end of the mating plate 15 is connected and fixed with a mating gear 11, the outer side of the mating gear 11 is meshingly connected with a driving gear 12, and the axis of the driving gear 12 is connected and fixed with a first stepper motor 13.
[0008] Furthermore, four positioning grooves 14 arranged at equal intervals are connected and fixed to the bottom surface of the driving frame 9 . The positioning grooves 14 and the sliding grooves are arranged in a staggered manner and in correspondence with each other. The positioning grooves 14 and the matching plates 15 are slidably matched.
[0009] Furthermore, a support base 16 is fixedly mounted on the bottom end of the first stepper motor 13 , and the matching gear 11 is rotatably connected to the support base 16 via a connecting column.
[0010] Furthermore, the displacement detection mechanism 3 includes a positioning block 17 connected and fixed to the mechanical detection device 2, the positioning block 17 is slidably connected to a limit frame 18 on the outside, the limit frame 18 is rotatably connected to a transmission belt 19 inside, one end of the transmission belt 19 is connected to a second stepper motor 20, the second stepper motor 20 is connected and fixed to the limit frame 18, and the limit frame 18 is slidably matched with the mounting base 1 and the gap plate 5.
[0011] Furthermore, the displacement detection mechanism 3 further comprises a toggle frame 21 connected and fixed to the limit frame 18 , a toggle column 22 is slidably connected inside the toggle frame 21 , and a toggle rod 23 is connected and fixed to the lower end of the toggle column 22 .
[0012] Furthermore, the displacement detection mechanism 3 further includes a third stepping motor 25 connected to the toggle rod 23 via a reducer 24 , and the third stepping motor 25 is connected and fixed to the mounting base 1 .
[0013] Furthermore, a fixing part 26 is plugged into the bottom of the insertion frame 7, and the fixing part 26 includes a plurality of plug-in plates 27 slidably connected to the gap plate 5. Springs 28 are connected and fixed at both ends of the plug-in plates 27. The other end of the spring 28 is connected and fixed to the inner wall of the gap plate 5. The plug-in plates 27 are plugged into the insertion frame 7.
[0014] Furthermore, a positioning plate 29 is plugged and matched on the outside of the positioning block 17 , and the positioning plate 29 is connected and fixed to the top surface of the gap plate 5 .
[0015] The purpose of this application is also to provide a risk assessment method based on concrete stress and strain, comprising the following steps:
[0016] S1, installing the concrete model 8 with the insert frame 7 into the slot 6 in the middle of the gap plate 5;
[0017] S2, start the third stepper motor 25, drive the toggle rod 23 through the reducer 24 to drive the toggle column 22 to slide in the toggle frame 21, thereby driving the limit frame 18 to move through the toggle frame 21, and then driving the mechanical detection device 2 on the positioning block 17 to abut against one side of the concrete model 8 through the limit frame 18;
[0018] S3, while the limit frame 18 moves, the plug-in board 27 is driven to be inserted into the plug-in frame 7 under the action of the compression spring 28, so as to achieve fixed limit of the concrete model 8 and ensure the stability of the sample position during the detection process;
[0019] S4, at the same time, the second stepper motor 20 drives the transmission belt 19 to operate, thereby driving the positioning block 17 and the mechanical detection device 2 to detect different height positions of the concrete model 8 to collect complete stress-strain curve data;
[0020] S5, after completing the detection of one side of the concrete model 8, start the first stepper motor 13 to drive the driving gear 12 to rotate, and then drive the matching plate 15 to rotate through the matching gear 11, so that the driving column 10 moves in the slide groove of the driving frame 9, realizing a 90° rotation of the driving frame 9, thereby driving the gap plate 5 and the concrete model 8 thereon to rotate 90° synchronously, and finally realizing multi-angle detection of the concrete model 8.
[0021] Compared with the prior art, the beneficial effects of this application are:
[0022] This application realizes precise positioning and multi-point measurement of different positions of the concrete model through the cooperation of multiple stepper motors and sliding mechanisms, thereby obtaining a complete stress-strain distribution curve, significantly improving the accuracy and comprehensiveness of the test data, eliminating human interference factors, and ensuring safety performance in practical applications. BRIEF DESCRIPTION OF THE DRAWINGS
[0023] Figure 1 A schematic diagram of the overall structure of a risk assessment model based on concrete stress and strain disclosed in an embodiment of the present application;
[0024] Figure 2 A cross-sectional schematic diagram of an installation base of a risk assessment model based on concrete stress and strain disclosed in an embodiment of the present application;
[0025] Figure 3 A schematic diagram of a coordination mechanism of a risk assessment model based on concrete stress and strain disclosed in an embodiment of the present application;
[0026] Figure 4 It is a schematic cross-sectional diagram of a limit frame of a risk assessment model based on concrete stress and strain disclosed in an embodiment of the present application.
[0027] Explanation of the numbers in the figure: 1. Mounting base; 2. Mechanical detection device; 3. Detection displacement mechanism; 4. Matching mechanism; 5. Gap plate; 6. Slot; 7. Insert frame; 8. Concrete model; 9. Drive frame; 10. Drive column; 11. Matching gear; 12. Drive gear; 13. First stepper motor; 14. Positioning groove; 15. Matching plate; 16. Support seat; 17. Positioning block; 18. Limit frame; 19. Transmission belt; 20. Second stepper motor; 21. Toggle frame; 22. Toggle column; 23. Toggle rod; 24. Reducer; 25. Third stepper motor; 26. Fixing piece; 27. Plug-in board; 28. Spring; 29. Positioning plate. DETAILED DESCRIPTION
[0028] In order to make the purpose, technical scheme and advantages of the implementation of the present invention clearer, the technical scheme in the embodiment of the present invention will be described in more detail below in conjunction with the drawings in the embodiment of the present invention. In the drawings, the same or similar reference numerals throughout represent the same or similar elements or elements with the same or similar functions. The described embodiments are part of the embodiments of the present invention, not all of the embodiments.
[0029] Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in the field without making any creative work shall fall within the scope of protection of the present invention.
[0030] The embodiments and directional terms described below with reference to the accompanying drawings are exemplary and intended to be used to explain the present invention, but should not be construed as limiting the present invention.
[0031] Reference Figure 1 and Figure 2 The present application embodiment discloses a risk assessment model based on concrete stress and strain, including:
[0032] Install the base 1;
[0033] A mechanical detection device 2, wherein a detection displacement mechanism 3 is fixedly mounted on the end of the mechanical detection device 2;
[0034] The matching mechanism 4 is installed on the mounting base 1, and the matching mechanism 4 includes a gap plate 5 rotatably connected to the mounting base 1. The top surface of the gap plate 5 is provided with a slot 6, and an insertion frame 7 is inserted and matched in the slot 6. A concrete model 8 is fixedly connected to the top surface of the insertion frame 7. The concrete model 8 is cast in proportion as needed.
[0035] The detection displacement mechanism 3 with the dynamic detection device 2 is precisely matched with the matching mechanism 4 to achieve accurate testing of the outer wall of the concrete model 8. After the test on one side of the concrete model 8 is completed, the gap plate 5 can automatically rotate and then test the other side of the concrete model 8 to ensure the comprehensiveness and completeness of the test. This fully automated testing method not only eliminates the influence of human interference factors on the test results, but also ensures the safety performance of the concrete structure in practical applications through all-round testing.
[0036] Reference Figure 3 The matching mechanism 4 also includes a driving frame 9 connected and fixed to the gap plate 5, and a driving column 10 is slidably matched inside the driving frame 9. The lower end of the driving column 10 is connected and fixed to a matching plate 15, and the other end of the matching plate 15 is connected and fixed to a matching gear 11. The outer side of the matching gear 11 is meshed and connected to a driving gear 12, and the axis of the driving gear 12 is connected and fixed to a first stepper motor 13.
[0037] The first stepper motor 13 can drive the driving gear 12 and the matching gear 11 to form a transmission, thereby driving the matching plate 15 to rotate. Due to the eccentric setting of the matching gear 11, the matching plate 15 will drive the driving column 10 to drive the driving frame 9. Since four sliding grooves are evenly spaced on the driving frame 9, the driving column 10 will slide into the driving frame 9 and then slide out, thereby driving the driving frame 9 to rotate 90°, so that the gap plate 5 will also rotate 90°, thereby realizing the displacement detection of the concrete model 8.
[0038] Reference Figure 3 The bottom surface of the driving frame 9 is connected and fixed with four positioning grooves 14 arranged at equal intervals. The positioning grooves 14 and the sliding grooves are arranged in a staggered manner, and the positioning grooves 14 are slidably matched with the matching plate 15.
[0039] The positioning groove 14 can limit the matching plate 15 to ensure that the driving frame 9 rotates accurately by 90°.
[0040] A support base 16 is fixedly mounted on the bottom end of the first stepper motor 13 , and the matching gear 11 is rotatably connected to the support base 16 via a connecting column.
[0041] Reference Figure 4 The detection displacement mechanism 3 includes a positioning block 17 connected and fixed to the mechanical detection device 2. The positioning block 17 is slidably connected to a limit frame 18 on the outside. The limit frame 18 is rotatably connected to a transmission belt 19 inside. One end of the transmission belt 19 is connected to a second stepper motor 20. The second stepper motor 20 is fixedly connected to the limit frame 18. The limit frame 18 is slidably matched with the mounting base 1 and the gap plate 5.
[0042] The second stepper motor 20 drives the transmission belt 19 to rotate, and the transmission belt 19 drives the positioning block 17 thereon to move up and down, thereby realizing the precise positioning of the mechanical detection device 2 in the height direction of the concrete model 8. This multi-point measurement method can obtain a complete stress-strain distribution curve, which significantly improves the accuracy and comprehensiveness of the test data.
[0043] Reference Figure 4 The displacement detection mechanism 3 also includes a toggle frame 21 connected and fixed to the limit frame 18 , a toggle column 22 is slidably connected inside the toggle frame 21 , and a toggle rod 23 is connected and fixed to the lower end of the toggle column 22 .
[0044] The displacement detection mechanism 3 further includes a third stepping motor 25 connected to the toggle rod 23 via a reducer 24 , and the third stepping motor 25 is connected and fixed to the mounting base 1 .
[0045] The third stepper motor 25 drives the toggle rod 23 to rotate through the reducer 24, driving the toggle column 22 at its end to slide inside the toggle frame 21, thereby driving the toggle frame 21 to move, and then driving the limit frame 18 to move, so that the limit frame 18 will drive the mechanical detection device 2 on the positioning block 17 to abut against the concrete model 8 for detection.
[0046] Reference Figure 2 A fixing part 26 is plugged into the bottom of the insertion frame 7, and the fixing part 26 includes a plurality of plug-in boards 27 that are slidably connected to the gap plate 5. Springs 28 are connected and fixed at both ends of the plug-in boards 27, and the other end of the spring 28 is connected and fixed to the inner wall of the gap plate 5. The plug-in board 27 is plugged into the insertion frame 7.
[0047] The fixing member 26 is linked with the limit frame 18 to drive the plug-in board 27 to move under the elastic action of the compression spring 28, so as to achieve accurate docking between the plug-in board 27 and the plug-in frame 7, thereby stably positioning the concrete model 8. This elastic positioning mechanism can effectively eliminate the shaking of the model during the detection process and ensure the reliability of the test data.
[0048] Reference Figure 1 The positioning block 17 is plugged with a positioning plate 29 on the outside, and the positioning plate 29 is connected and fixed to the top surface of the gap plate 5.
[0049] When the positioning block 17 moves with the dynamics detection device 2, it will be plugged into and matched with the positioning plate 29, so that the problem of shaking of the dynamics detection device 2 during the detection process can be avoided, and the accuracy of the detection result is guaranteed.
[0050] The implementation principle of the risk assessment model based on concrete stress and strain in the embodiment of the present application is:
[0051] S1, installing the concrete model 8 with the insert frame 7 into the slot 6 in the middle of the gap plate 5;
[0052] S2, start the third stepper motor 25, drive the toggle rod 23 through the reducer 24 to drive the toggle column 22 to slide in the toggle frame 21, thereby driving the limit frame 18 to move through the toggle frame 21, and then driving the mechanical detection device 2 on the positioning block 17 to abut against one side of the concrete model 8 through the limit frame 18;
[0053] S3, while the limit frame 18 moves, the plug-in board 27 is driven to be inserted into the plug-in frame 7 under the action of the compression spring 28, so as to achieve fixed limit of the concrete model 8 and ensure the stability of the sample position during the detection process;
[0054] S4, at the same time, the second stepper motor 20 drives the transmission belt 19 to operate, thereby driving the positioning block 17 and the mechanical detection device 2 to detect different height positions of the concrete model 8 to collect complete stress-strain curve data;
[0055] S5, after completing the detection of one side of the concrete model 8, start the first stepper motor 13 to drive the driving gear 12 to rotate, and then drive the matching plate 15 to rotate through the matching gear 11, so that the driving column 10 moves in the slide groove of the driving frame 9, realizing a 90° rotation of the driving frame 9, thereby driving the gap plate 5 and the concrete model 8 thereon to rotate 90° synchronously, and finally realizing multi-angle detection of the concrete model 8.
[0056] Finally, it should be pointed out that the above embodiments are only used to illustrate the technical solutions of the present invention, rather than to limit them. Although the present invention has been described in detail with reference to the above embodiments, a person skilled in the art should understand that the technical solutions described in the above embodiments can still be modified, or some of the technical features can be replaced by equivalents; and these modifications or replacements do not make the essence of the corresponding technical solutions deviate from the spirit and scope of the technical solutions of the embodiments of the present invention.
Claims
1. A risk assessment model based on concrete stress and strain, characterized in that: It includes a mounting base, a mechanical detection device and a matching mechanism, wherein a detection displacement mechanism is fixedly installed at the end of the mechanical detection device; the matching mechanism is installed on the mounting base, and the matching mechanism includes a gap plate rotatably connected to the mounting base, a slot is provided on the top surface of the gap plate, an insertion frame is plugged into the slot, a concrete model is fixedly connected to the top surface of the insertion frame, and the concrete model is cast in proportion as required.
2. A risk assessment model based on concrete stress and strain according to claim 1, characterized in that: The mating mechanism also includes a driving frame connected and fixed to the gap plate, the driving frame has a driving column slidingly fitted inside, the lower end of the driving column is connected and fixed to a mating plate, the other end of the mating plate is connected and fixed to a mating gear, the outer side of the mating gear is meshingly connected to the driving gear, and the axis of the driving gear is connected and fixed to a first stepper motor.
3. A risk assessment model based on concrete stress and strain according to claim 2, characterized in that: The bottom surface of the driving frame is connected and fixed with four positioning grooves arranged at equal intervals. The positioning grooves and the sliding grooves are arranged in a staggered and corresponding manner, and the positioning grooves are slidably matched with the matching plate.
4. The risk assessment model based on concrete stress and strain according to claim 3 is characterized in that: A support seat is fixedly installed at the bottom end of the first stepper motor, and a matching gear is rotatably connected with the support seat through a connecting column.
5. The risk assessment model based on concrete stress and strain according to claim 4 is characterized in that: The displacement detection mechanism includes a positioning block connected and fixed to the mechanical detection device, the positioning block is slidably connected to a limit frame on the outside, the limit frame is rotatably connected to a transmission belt inside, one end of the transmission belt is connected to a second stepper motor, the second stepper motor is connected and fixed to the limit frame, and the limit frame is slidably matched with the mounting base and the gap plate.
6. The risk assessment model based on concrete stress and strain according to claim 5 is characterized in that: The displacement detection mechanism also includes a toggle frame connected and fixed to the limit frame, a toggle column is slidably connected inside the toggle frame, and a toggle rod is connected and fixed to the lower end of the toggle column.
7. The risk assessment model based on concrete stress and strain according to claim 6 is characterized in that: The displacement detection mechanism also includes a third stepper motor connected to the toggle rod through a reducer, and the third stepper motor is connected and fixed to the mounting base.
8. The risk assessment model based on concrete stress and strain according to claim 7 is characterized in that: The bottom of the plug-in frame is plugged with a fixing piece, which includes a plurality of plug-in boards slidably connected to the gap plate. Springs are connected and fixed at both ends of the plug-in boards, and the other end of the spring is connected and fixed to the inner wall of the gap plate. The plug-in board is plugged with the plug-in frame.
9. The risk assessment model based on concrete stress and strain according to claim 8, characterized in that: The outer side of the positioning block is plugged with a positioning plate, and the positioning plate is connected and fixed to the top surface of the gap plate.
10. The risk assessment model based on concrete stress and strain according to claim 9, characterized in that: The assessment method based on the risk assessment model of concrete stress and strain includes the following steps: The purpose of this application is also to provide a risk assessment method based on concrete stress and strain, comprising the following steps: S1, installing the concrete model with the insert frame into the slot in the middle of the gap plate; S2, start the third stepper motor, drive the toggle rod through the reducer to drive the toggle column to slide in the toggle frame, thereby driving the limit frame to move through the toggle frame, and then driving the mechanical detection device on the positioning block to abut against one side of the concrete model through the limit frame; S3, while the limit frame moves, the plug-in board is driven to be inserted into the inside of the plug-in frame under the action of the compression spring, thereby realizing the fixed limit of the concrete model and ensuring the stability of the sample position during the detection process; S4, at the same time, the second stepper motor drives the transmission belt to operate, thereby driving the positioning block and the mechanical detection device to detect different height positions of the concrete model to collect complete stress-strain curve data; S5, after completing the detection of one side of the concrete model, start the first stepper motor to drive the driving gear to rotate, and then drive the matching plate to rotate through the matching gear, so that the driving column moves in the slide groove of the driving frame, and realizes a 90° rotation of the driving frame, thereby driving the gap plate and the concrete model on it to rotate 90° synchronously, and finally realize multi-angle detection of the concrete model.