Linear acceleration loading test environment simulation system
By introducing temperature, light, and water simulation components into the accelerated loading test, the problem of neglecting regional environmental factors in the existing technology is solved, resulting in more accurate and reliable test data and simulating a near-realistic traffic road environment.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2025-04-10
- Publication Date
- 2026-05-12
Smart Images
Figure CN224231423U_ABST
Abstract
Description
Technical Field
[0001] This utility model belongs to the field of road performance testing technology, specifically relating to a linear acceleration loading test environment simulation system. Background Technology
[0002] Accelerated loading tests are used to comprehensively simulate the actual service conditions of road materials and structures in special geographical environments, simulate different vehicle axle load compositions, and conduct scientific research on the accelerated loading of new structures, materials, and processes using full-scale tests. Different geographical locations have different environmental conditions, such as surface temperature, light intensity, rainfall, and groundwater, all of which affect the results of accelerated loading tests. However, since it is impractical to construct accelerated loading test sites locally, current accelerated loading tests often ignore the influence of these environmental factors, resulting in insufficient accuracy and reliability of test data and significant discrepancies with actual traffic conditions, which urgently needs to be addressed. Utility Model Content
[0003] This utility model provides a linear acceleration loading test environment simulation system, which aims to improve the data accuracy and reliability of linear acceleration loading simulation tests on traffic pavement performance under different regional conditions.
[0004] To achieve the above objectives, the technical solution adopted by this utility model is as follows: A linear acceleration loading test environment simulation system is provided, including a temperature simulation component, a light simulation component, and a water simulation component. The temperature simulation component includes an air conditioning module, a heat lamp module, and an underground coil. The air conditioning module is located outside the casing of the linear acceleration loading device and is used for circulating ventilation to the casing. The heat lamp module is located inside the casing and radiates heat energy towards the test road surface. The underground coil is buried in the roadbed below the test road surface and is used for circulating refrigerant or heat medium. The light simulation component includes an ultraviolet dot matrix light source located inside the casing, and the light intensity of the ultraviolet dot matrix light source is adjustable. The water simulation component includes a spray module located inside the casing and a seepage pipe network located in the roadbed, with the seepage pipe network situated below the underground coil.
[0005] In one possible implementation, the heat lamp module includes an infrared lamp assembly and an infrared radiation plate assembly; wherein the infrared lamp assembly is located above the loading mechanism of the linear acceleration loading device and irradiates the test road surface, and the infrared radiation plate assembly is located below the loading mechanism and radiates heat to the test road surface.
[0006] In some embodiments, the underground coil is connected to the chiller and the heating unit via a reversing valve; wherein the chiller is used to circulate refrigerant into the underground coil, and the heating unit is used to circulate heat medium into the underground coil.
[0007] For example, temperature sensors are connected to both sides of the casing near the test road surface. The air conditioning module, the refrigeration unit, and the heating unit all adjust their own power based on the temperature detection values of the temperature sensors.
[0008] For example, the illumination simulation component also includes an illumination sensor and an illumination controller. The illumination sensor is used to detect the illumination intensity of the ultraviolet dot matrix light source and feed it back to the illumination controller, which is used to regulate the illumination intensity of the ultraviolet dot matrix light source.
[0009] In one possible implementation, the spray module includes two rows of spray pipes connected to the inner walls of both sides of the housing. Each spray pipe has several nozzles spaced apart along its axial direction, and each nozzle sprays simulated rainwater toward the test road surface.
[0010] In some embodiments, the spray module further includes a water storage tank, a water pump, and a dosing device. The water pump is located inside the water storage tank and its output end is connected to the spray pipe. The water storage tank is equipped with a water temperature control component, and the dosing device is connected to the water storage tank to control the pH value of the water in the water storage tank.
[0011] For example, the water simulation component also includes a seepage well located underground on the side of the roadbed, and the seepage pipe network is connected to the seepage well.
[0012] For example, retaining walls are installed below and around the roadbed.
[0013] In some embodiments, the linear acceleration loading test environment simulation system also includes a central control module, which is electrically connected to the temperature simulation component, the light simulation component, and the water simulation component, respectively.
[0014] The beneficial effects of the linear acceleration loading test environment simulation system provided by this utility model are as follows: Compared with the prior art, the linear acceleration loading test environment simulation system of this utility model can flexibly adjust the air temperature inside the casing through the air conditioning module, adjust the surface temperature of the test road surface by using the air temperature in conjunction with the heat radiation of the test road surface by the heat lamp module, and adjust the underground temperature by using the underground coil to transfer heat to the roadbed, thereby simulating near-real temperature conditions; the ultraviolet dot matrix light source can adjust the light intensity required for the test, thereby simulating real light conditions; the spray module sprays water toward the test road surface to simulate rain conditions, and can also use the seepage pipe network to adjust the groundwater depth of the roadbed, thereby simulating near-real groundwater conditions; thus, it can simulate the air temperature, surface temperature, underground temperature, light, rainwater and groundwater distribution in different regions, so that the linear acceleration loading device can be combined with near-real environmental conditions to test the actual traffic road conditions in different regions, thereby improving the reliability and accuracy of test data. Attached Figure Description
[0015] Figure 1 A schematic diagram of the overall layout of the linear acceleration loading test environment simulation system provided in this embodiment of the utility model;
[0016] Figure 2 A schematic diagram of the layout of the linear acceleration loading test environment simulation system provided in this embodiment of the utility model inside the casing;
[0017] Figure 3 A schematic diagram of the roadbed cross-sectional structure of the linear acceleration loading test environment simulation system provided in this embodiment of the utility model;
[0018] Figure 4 This is a block diagram illustrating the lighting control principle of the lighting simulation component used in this embodiment of the utility model.
[0019] In the diagram: 10. Temperature simulation component; 11. Air conditioning module; 12. Heat lamp module; 121. Infrared lamp assembly; 122. Infrared radiation panel assembly; 13. Underground coil; 131. Reversing valve; 132. Refrigeration unit; 133. Heating unit; 14. Temperature sensor; 20. Illumination simulation component; 21. Ultraviolet dot matrix light source; 22. Illumination sensor; 23. Light controller; 31. Spray module; 311. Spray pipe; 312. Spray head; 313. Water storage tank; 314. Water pump; 315. Dosing device; 32. Infiltration network; 33. Infiltration well; 34. Water retaining wall; 40. Housing; 50. Test pavement; 60. Roadbed. Detailed Implementation
[0020] To make the technical problems, technical solutions, and beneficial effects of this utility model clearer, the present utility model will be further described in detail below with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are merely illustrative of the present utility model and are not intended to limit the present utility model.
[0021] It should be noted that when an element is referred to as being "set on" or "connected to" another element, it can be directly on or indirectly on the other element. It should be understood that the terms "upper," "lower," "front," "rear," "top," "bottom," "inner," and "outer," etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings, and are only for the convenience of describing this application and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation, and therefore should not be construed as a limitation of this application. In the description of this application, "a plurality of" or "several" means two or more, unless otherwise explicitly specified.
[0022] Please refer to the following: Figures 1 to 4The linear acceleration loading test environment simulation system provided by this utility model is described below. The linear acceleration loading test environment simulation system includes a temperature simulation component 10, a light simulation component 20, and a water simulation component. The temperature simulation component 10 includes an air conditioning module 11, a heat lamp module 12, and an underground coil 13. The air conditioning module 11 is located outside the housing 40 of the linear acceleration loading device and is used for circulating ventilation to the housing 40. The heat lamp module 12 is located inside the housing 40 and radiates heat energy towards the test road surface 50. The underground coil 13 is buried in the roadbed 60 below the test road surface 50 and is used for circulating refrigerant or heat medium. The light simulation component 20 includes an ultraviolet dot matrix light source 21 located inside the housing 40, and the light intensity of the ultraviolet dot matrix light source 21 is adjustable. The water simulation component includes a spray module 31 located inside the housing 40 and a seepage pipe network 32 located inside the roadbed 60, with the seepage pipe network 32 located below the underground coil 13.
[0023] It should be understood that in this embodiment, the linear acceleration loading device is located inside the housing 40, which isolates it from the external environment. The housing 40 is equipped with air intake and return systems connected to the air conditioning module 11 to achieve the circulation and regulation of the air temperature inside the housing 40. The air temperature ultimately causes the surface temperature of the test road surface 50 to change adaptively. However, since the efficiency of changing the surface temperature by relying solely on the heat transfer effect of the air is extremely low, a heat lamp module 12 is set up to simulate sunlight irradiating the test road surface 50. The heat radiation of the heat lamp module 12 is used to regulate the surface temperature. On this basis, the influence of the roadbed 60 temperature on the surface temperature cannot be ignored. Therefore, an underground coil 13 is buried in the roadbed 60, and a liquid medium is circulated in the underground coil 13 in a manner similar to underfloor heating to exchange heat with the roadbed 60, thereby enabling the roadbed 60 temperature to reach the target value. In this way, the temperature can be regulated from three perspectives: the ambient air temperature, the surface temperature, and the roadbed 60 temperature, so that the temperature conditions are close to the real state.
[0024] The influence of lighting conditions on the performance of road test materials is mainly due to ultraviolet radiation. Therefore, in this embodiment, ultraviolet dot matrix light source 21 is used to irradiate the test road surface 50 to ensure the uniformity of light received by the test road surface 50. The light intensity of the ultraviolet dot matrix light source 21 is adaptively adjusted to simulate a near-real lighting state.
[0025] In this embodiment, environmental water simulation is performed from two perspectives: surface water and groundwater. The main influencing factor for surface water is rainfall, while the influencing factors for groundwater are groundwater temperature and water level. Based on this, a spray module 31 is used to spray water toward the test road surface 50 to simulate the rainfall process. At the same time, the groundwater level in the roadbed 60 is controlled by the infiltration pipe network 32, thereby simulating rainwater and groundwater conditions close to the real state.
[0026] Compared with existing technologies, the linear acceleration loading test environment simulation system provided in this embodiment can flexibly adjust the air temperature inside the casing 40 through the air conditioning module 11, adjust the surface temperature of the test road surface 50 by using the air temperature in conjunction with the heat radiation of the heat lamp module 12 to the test road surface 50, and adjust the underground temperature by using the underground coil 13 to transfer heat to the roadbed 60, thereby simulating near-real temperature conditions; the ultraviolet dot matrix light source 21 can adjust the light intensity required for the test, thereby simulating real light conditions; the spray module 31 sprays water toward the test road surface 50 to simulate rain conditions, and can also use the infiltration pipe network 32 to adjust the groundwater depth of the roadbed 60, thereby simulating near-real groundwater conditions; thus, it can simulate air temperature, surface temperature, underground temperature, light, rainwater and groundwater distribution in different regions, so that the linear acceleration loading device can be combined with near-real environmental conditions to test the actual traffic road conditions in different regions, thereby improving the reliability and accuracy of test data.
[0027] In some embodiments, see Figure 2 The heat lamp module 12 includes an infrared lamp assembly 121 and an infrared radiation plate assembly 122. The infrared lamp assembly 121 is located above the loading mechanism of the linear acceleration loading device and irradiates the test road surface 50, while the infrared radiation plate assembly 122 is located below the loading mechanism and radiates heat to the test road surface 50. By using the infrared lamp assembly 121 to irradiate downwards above the loading mechanism for heat transfer, the heating range and uniformity can be improved. Simultaneously, by using the infrared radiation plate assembly 122 close to the test road surface 50 for short-range radiative heat transfer, the heating efficiency can be improved.
[0028] Among some possible implementations, such as Figure 1 As shown, the underground coil 13 is connected to the chiller 132 and the heater 133 via a reversing valve 131; wherein, the chiller 132 is used to circulate refrigerant into the underground coil 13, and the heater 133 is used to circulate heat medium into the underground coil 13. It should be noted that... (Please refer to...) Figure 2Temperature sensors 14 are connected to both sides of the housing 40 near the test surface 50. The air conditioning module 11, the chiller 132, and the heater 133 all regulate their power based on the temperature values detected by the temperature sensors 14. Given the large internal space of the housing 40, and the fact that the air conditioning module 11, the chiller 132, and the heater 133 all need to be regulated based on temperature parameters, a row of spaced temperature sensors 14 is installed on both sides of the housing 40 to achieve comprehensive temperature monitoring at various locations on the test surface 50. Each main unit of the air conditioning module 11, the chiller 132, and the heater 133 is connected to at least one temperature sensor 14, and all three operate based on the temperature values detected by the temperature sensors 14 to control their start / stop and power output. In this embodiment, the refrigeration unit 132 can specifically be a refrigeration compressor, which enables the refrigerant, such as a refrigerant, to reach a low temperature and enter the underground coil 13, thereby allowing the underground coil 13 to transfer heat to the roadbed 60 to achieve the low-temperature test conditions; the heating unit 133 can specifically be a water heater, and the heat medium can be water directly. The heating unit 133 heats the water to a high temperature and then introduces it into the underground coil 13, thereby allowing the underground coil 13 to heat the roadbed 60 to achieve the high-temperature test conditions. Here, the heating unit 133 and the refrigeration unit 132 can be connected to the underground coil 13 through a three-way reversing valve 131. When the roadbed 60 needs to be heated, the reversing valve 131 switches to the state where the heating unit 133 is connected to the underground coil 13, and when the roadbed 60 needs to be cooled, the reversing valve 131 switches to the state where the refrigeration unit 132 is connected to the underground coil 13.
[0029] As one specific embodiment of the aforementioned lighting simulation component 20, please refer to Figure 2 and Figure 4 The illumination simulation component 20 also includes an illumination sensor 22 and an illumination controller 23. The illumination sensor 22 is used to detect the illumination intensity of the ultraviolet dot matrix light source 21 and feed it back to the illumination controller 23. The illumination controller 23 is used to regulate the illumination intensity of the ultraviolet dot matrix light source 21.
[0030] When the ultraviolet dot matrix light source 21 is working, the light intensity is first set based on the required lighting conditions. The light controller 23 sends an electrical signal (PWM signal, i.e., pulse width modulation signal) to the light source driving circuit according to the set value of the light intensity. Several light sensors 22 are evenly distributed inside the housing 40. The light data detected by each light sensor 22 is fed back to the light controller 23 and processed by the processor built into the light controller 23. This allows it to determine whether the light uniformity meets the requirements. If it does, the average value of all detected data is compared with the light setting value. The light controller 23 adjusts the power output of the light source driving circuit according to the comparison result, so that the light intensity is always within the target range, thereby improving the realism of the lighting simulation.
[0031] In some embodiments, please refer to Figure 2 The spray module 31 includes two rows of spray pipes 311 connected to the inner walls of both sides of the housing 40. Each spray pipe 311 has several nozzles 312 spaced along its axial direction, and each nozzle 312 sprays simulated rainwater toward the test surface 50. The nozzles 312 are installed on the spray pipes 311 in a detachable and replaceable manner. By replacing the nozzles 312, the spray range and spray volume can be adjusted to simulate different rainfall amounts. The nozzles 312 used here can be nozzle type, spray type, suspension type, or needle type. Since the size of raindrops is not uniform in actual rainfall, nozzle type or spray type nozzles 312 are preferred to spray water onto the test ground to approximate the real natural rainfall state.
[0032] As a further embodiment of the above-mentioned spray module 31, please refer to... Figure 1 and Figure 2 It is understood that the spray module 31 also includes a water storage tank 313, a water pump 314 and a dosing device 315. The water pump 314 is located inside the water storage tank 313 and its output end is connected to the spray pipe 311. The water storage tank 313 is equipped with a water temperature control component, and the dosing device 315 is connected to the water storage tank 313 to control the pH value of the water in the water storage tank 313.
[0033] Since real rainfall has regional characteristics, different regions often have different rainwater temperatures and pH values. Therefore, water temperature control components such as heaters are set up to regulate the water temperature in the water storage tank 313. At the same time, acid and alkaline components are added to the water storage tank 313 using a dosing device 315 to regulate the water quality pH value, thereby simulating a more realistic rainfall state.
[0034] In some embodiments, such as Figure 1 and Figure 3 As shown, the aforementioned water simulation component also includes a seepage well 33, which is located underground to the side of the roadbed 60. The seepage pipe network 32 is connected to the seepage well 33. The seepage well 33 is positioned to the side of the sample device to avoid affecting the structural strength of the roadbed 60. Connecting the seepage pipe network 32 to the seepage well 33 allows for the regulation of the groundwater level below the roadbed 60 by controlling the water level within the seepage well 33. Specifically, when the test requires a lower groundwater level, water in the seepage well 33 can be pumped out, and then groundwater can enter the seepage well 33 through the seepage pipe network 32. When a higher groundwater level is required, water can be added to the seepage well 33, allowing water to spread to the roadbed 60 through the seepage pipe network 32, ultimately bringing the groundwater level to the target range.
[0035] It should be noted that you should refer to [link / reference]. Figure 3In this embodiment, a retaining wall 34 is provided below and around the roadbed 60. By setting up the retaining wall 34, the groundwater in the roadbed 60 can be prevented from spreading to the surrounding area, thereby improving the efficiency and accuracy of regulating the groundwater level of the roadbed 60 through the seepage pipe network 32.
[0036] It should be understood that the aforementioned linear acceleration loading test environment simulation system also includes a central control module, which is electrically connected to the temperature simulation component 10, the light simulation component 20, and the water simulation component. The central control module can be installed as a cabinet on the outside of the housing 40 and equipped with a display screen. It can input control parameters according to the natural environmental conditions of different regions, enabling the temperature simulation component 10, the light simulation component 20, and the water simulation component to regulate the temperature, light, and water conditions based on the input control parameters. The accelerated loading test will only begin after these parameters have reached the set range, thereby making the test data closer to real traffic conditions and improving the reliability and accuracy of the test data.
[0037] The above description is only a preferred embodiment of the present utility model and is not intended to limit the present utility model. Any modifications, equivalent substitutions and improvements made within the spirit and principles of the present utility model should be included within the protection scope of the present utility model.
Claims
1. A linear acceleration loading test environment simulation system, characterized in that, The device includes a temperature simulation component, a light simulation component, and a water simulation component. The temperature simulation component comprises an air conditioning module, a heat lamp module, and an underground coil. The air conditioning module is located outside the casing of the linear acceleration loading device and is used for circulating ventilation to the casing. The heat lamp module is located inside the casing and radiates heat energy towards the test road surface. The underground coil is buried in the roadbed below the test road surface and is used for circulating refrigerant or heat medium. The light simulation component includes an ultraviolet dot matrix light source located inside the casing, and the light intensity of the ultraviolet dot matrix light source is adjustable. The water simulation component includes a spray module located inside the casing and a seepage pipe network located in the roadbed, with the seepage pipe network situated below the underground coil.
2. The linear acceleration loading test environment simulation system as described in claim 1, characterized in that, The heat lamp module includes an infrared lamp group and an infrared radiation plate group; wherein, the infrared lamp group is located above the loading mechanism of the linear acceleration loading device and irradiates the test road surface, and the infrared radiation plate group is located below the loading mechanism and radiates heat to the test road surface.
3. The linear acceleration loading test environment simulation system as described in claim 1, characterized in that, The underground coil is connected to the chiller and the heating unit via a reversing valve; wherein the chiller is used to circulate refrigerant into the underground coil, and the heating unit is used to circulate heat medium into the underground coil.
4. The linear acceleration loading test environment simulation system as described in claim 3, characterized in that, Temperature sensors are connected to both sides of the casing near the test road surface. The air conditioning module, the refrigeration unit, and the heating unit all adjust their power based on the temperature detection values of the temperature sensors.
5. The linear acceleration loading test environment simulation system as described in claim 1, characterized in that, The illumination simulation component also includes an illumination sensor and an illumination controller. The illumination sensor is used to detect the illumination intensity of the ultraviolet dot matrix light source and feed it back to the illumination controller. The illumination controller is used to adjust the illumination intensity of the ultraviolet dot matrix light source.
6. The linear acceleration loading test environment simulation system as described in claim 1, characterized in that, The spray module includes two rows of spray pipes connected to the inner walls of both sides of the housing. Each spray pipe has several nozzles spaced apart along its axial direction, and each nozzle sprays simulated rainwater toward the test road surface.
7. The linear acceleration loading test environment simulation system as described in claim 6, characterized in that, The spray module also includes a water storage tank, a water pump, and a dosing device. The water pump is located inside the water storage tank and its output end is connected to the spray pipe. The water storage tank is equipped with a water temperature control component, and the dosing device is connected to the water storage tank to control the pH value of the water in the water storage tank.
8. The linear acceleration loading test environment simulation system as described in claim 1, characterized in that, The water simulation component also includes a seepage well, which is located underground on the side of the roadbed, and the seepage pipe network is connected to the seepage well.
9. The linear acceleration loading test environment simulation system as described in claim 8, characterized in that, Water-retaining walls are provided below and around the roadbed.
10. The linear acceleration loading test environment simulation system as described in any one of claims 1-9, characterized in that, The linear acceleration loading test environment simulation system also includes a central control module, which is electrically connected to the temperature simulation component, the light simulation component, and the water simulation component, respectively.