CN-224231422-U - Temperature-adjusting sealing structure and accelerated loading test system

CN224231422UCN 224231422 UCN224231422 UCN 224231422UCN-224231422-U

Abstract

The utility model provides a temperature-adjusting sealing structure and an accelerated loading test system, which comprises a machine shell, an air conditioning unit and a geothermal component, wherein the lower bottom of the machine shell is open, the periphery edge of the bottom wall of the machine shell is sealed and pressed against a test pavement, one end of the machine shell is provided with an air supply opening, the other end of the machine shell is provided with an air return opening, the air conditioning unit is arranged on the outer side of the machine shell and is provided with an air supply pipeline and an air return pipeline, the air supply pipeline is connected with the air supply opening, the air return pipeline is connected with the air return opening, the geothermal component is buried under the test pavement, and the air conditioning unit and the geothermal component are used for adjusting and controlling the air temperature and the pavement temperature in the machine shell in a matching mode. According to the temperature-adjusting sealing structure provided by the utility model, the casing is used for creating a closed space for the loading device, the air temperature in the casing is adjusted through the air conditioning unit, and the road surface temperature is adjusted and controlled through the geothermal component, so that the actual road surface conditions under different regional environment conditions can be simulated, and the limit of environmental factors on an acceleration loading test is reduced.

Inventors

LIU LIN
ZHANG LIANG
LIU HUIJIE
YAN FANGYONG
LI YAQI
LI BINGQIANG
HE WANLIN
YUE ZEYU
LIU XIANG
ZHANG PENGCHENG

Assignees

北方工程设计研究院有限公司

Dates

Publication Date: 20260512
Application Date: 20250410

Claims (10)

1. The temperature-regulating sealing structure is characterized by comprising a shell, an air conditioning unit and a geothermal component, wherein the lower bottom of the shell is open, the periphery edge of the bottom wall of the shell is sealed and pressed against a test pavement, one end of the shell is provided with an air supply opening, the other end of the shell is provided with an air return opening, the air conditioning unit is arranged on the outer side of the shell and is provided with an air supply pipeline and an air return pipeline, the air supply pipeline is connected with the air supply opening, the air return pipeline is connected with the air return opening, the geothermal component is buried under the test pavement, and the air conditioning unit and the geothermal component are used for adjusting and controlling the air temperature and the pavement temperature in the shell in a matching mode.
2. The temperature-regulating sealing structure according to claim 1, wherein two sides of the casing are respectively provided with one air conditioning unit, air supply pipelines of the two air conditioning units are commonly connected to the air supply port, and return air pipelines of the two air conditioning units are commonly connected to the return air port, wherein the two air conditioning units are used for alternately running.
3. The temperature-regulating seal structure according to claim 2, wherein air valves are provided in both return air ducts and supply air ducts of the two air conditioning units.
4. The temperature-regulating seal of claim 1, wherein said geothermal assembly comprises a fluid line uniformly disposed under said test surface, said fluid line being configured to circulate a heating medium or cooling medium to heat or cool said test surface.
5. The temperature-regulating sealing structure according to claim 1, wherein the casing comprises two side plates, two end plates and a top cover, the two side plates are connected through a plurality of cross beams distributed at intervals, the two end plates are respectively packaged at two ends of the two side plates, the peripheral edges of the top cover are respectively connected with the top surfaces of the two side plates and the two end plates in a sealing mode, and heat-insulating interlayers are arranged on the side plates and the end plates.
6. The temperature-regulating seal structure of claim 5 wherein a rigid polyurethane foam is disposed within said insulating interlayer.
7. The temperature-regulating sealing structure according to claim 1, wherein a plurality of supports are circumferentially arranged at intervals at the bottom of the casing, bases for correspondingly connecting the supports are arranged on the test pavement, heat-insulating walls are arranged on two sides of each base and the corresponding support, and the upper surface and the lower surface of each heat-insulating wall are respectively pressed against the bottom surface of the casing and the test pavement in a sealing mode.
8. The temperature-regulating sealing structure according to claim 7, wherein a sealing cushion layer is arranged on the test pavement along the bottom circumference of the casing, and the sealing cushion layer is connected with the heat-insulating wall.
9. The temperature-adjusting seal structure according to any one of claims 1 to 8, wherein a first temperature sensor for detecting an air temperature in the casing and a second temperature sensor for detecting a road surface temperature are provided inside the casing.
10. An accelerated loading test system comprising a temperature regulating seal arrangement according to any one of claims 1 to 9.

Description

Temperature-adjusting sealing structure and accelerated loading test system Technical Field The utility model belongs to the technical field of pavement performance test, and particularly relates to a temperature-adjusting sealing structure and an accelerated loading test system. Background The accelerated loading test is used for comprehensively simulating the actual service conditions of pavement materials and structures in special regional environments, simulating the axle load compositions of different vehicles, and performing the scientific research of the accelerated loading test of new structures, new materials and new processes by adopting a full-size test. In the test process, the performance of the pavement material and the pavement structure is tested by simulating the loading operation of the real axle load on the test pavement through the loading vehicle. At present, the acceleration loading test can basically achieve the condition that the conditions such as axle load, vehicle speed and road surface load are consistent with or approximate to the real traffic state. However, since the pavement material and the structural performance are closely related to the environmental temperature and the pavement temperature, the accurate test data can be obtained only by adopting a local test mode at present, and the test can not be carried out under the same test field for the environmental conditions of different regions, so that the test restriction is very large, and the problem needs to be solved. Disclosure of utility model The embodiment of the utility model provides a temperature-adjusting sealing structure and an accelerated loading test system, which aim to reduce the limit of actual environmental factors on an accelerated loading test and improve the adaptability of the accelerated loading test to environmental conditions of different regions. The temperature-adjusting sealing structure comprises a machine shell, an air conditioning unit and a geothermal component, wherein the lower bottom of the machine shell is open, the periphery edge of the bottom wall of the machine shell is sealed and pressed against a test pavement, an air supply opening is formed in one end of the machine shell, an air return opening is formed in the other end of the machine shell, the air conditioning unit is arranged on the outer side of the machine shell and is provided with an air supply pipeline and an air return pipeline, the air supply pipeline is connected with the air supply opening, the air return pipeline is connected with the air return opening, the geothermal component is buried under the test pavement, and the air conditioning unit and the geothermal component are used for adjusting and controlling the air temperature and the pavement temperature in the machine shell in a matched mode. With reference to the first aspect, in one possible implementation manner, two air conditioning units are respectively arranged on two sides of the casing, air supply pipelines of the two air conditioning units are commonly connected to the air supply port, and return air pipelines of the two air conditioning units are commonly connected to the return air port, wherein the two air conditioning units are used for alternately running. In some embodiments, air valves are arranged in the return air pipeline and the air supply pipeline of the two air conditioning units. Illustratively, the geothermal assembly includes a fluid line disposed uniformly beneath the test surface, and a heat medium or coolant circulated within the fluid line to heat or cool the test surface. In some embodiments, the casing comprises two side plates, two end plates and a top cover, wherein the two side plates are connected through a plurality of cross beams distributed at intervals, the two end plates are respectively encapsulated at two ends of the two side plates, the peripheral edges of the top cover are respectively and hermetically connected with the top surfaces of the two side plates and the two end plates, and the side plates and the end plates are both provided with heat insulation interlayers. In one possible implementation, a rigid polyurethane foam is disposed within the insulating interlayer. In some embodiments, a plurality of supports are circumferentially arranged at intervals at the bottom of the casing, and bases for correspondingly connecting the supports are arranged on the test pavement, wherein heat-insulating walls are arranged on two sides of each base and the corresponding support, and the upper surface and the lower surface of each heat-insulating wall are respectively pressed against the bottom surface of the casing and the test pavement in a sealing way. The test pavement is provided with a sealing cushion layer along the bottom circumference of the machine shell, and the sealing cushion layer is connected with the heat preservation wall. For example, a first temperature sensor for detecting the temperature of air in the casi