Method for testing airport runway foundation accumulated water
A test method and airport technology, applied in the direction of material moisture content, material thermal conductivity, material thermal development, etc., can solve problems such as pavement deformation, cracking, and affecting the normal service of the airport
Active Publication Date: 2020-09-11
CENT SOUTH UNIV
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Problems solved by technology
[0002] The accumulation of water in the roadbed of the airport will cause serious engineering disasters. In winter, the water accumulated under the large area of impermeable road surface freezes and expands in volume. When the temperature rises, the volume thaws and shrinks, and the freeze-thaw cycle will cause deformation or cracking of the road surface , affecting the normal service of the airport
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[0033] From figure 1 It can be seen that the method for testing the accumulation of water in the airport road foundation disclosed in this embodiment adopts a new test system, which includes a heat insulation box 1, a box temperature controller, a heat insulation cylinder 3, and a temperature sensor 4 , data acquisition instrument 5 and computer 6.
[0034] The heat insulation box 1 of this embodiment is a square box, and the outside of each side plate is provided with materials such as asbestos as a thermal insulation layer, so as to avoid heat conduction inside and outside the box as much as possible.
[0035] The top in the heat insulation box 1 is symmetrically arranged with box temperature controllers. The box temperature controller can be an outsourced part that separates the heating part 21 and the temperature regulating part 22. The heating part is fixed inside the heat-insulating box, while the temperature-regulating part is placed outside the heat-insulating box to ...
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The invention discloses a method for testing airport runway foundation accumulated water. A testing system comprises a constant-temperature box device, a heat insulation cylinder, a temperature sensor, a data acquisition instrument and a computer. The constant-temperature box device comprises a heat insulation box body and a box temperature controller arranged in the heat insulation box body. Theheat insulation cylinder comprises a heat insulation cylinder body and a sealing cover on the top face of the heat insulation cylinder body, and the sealing cover is a three-layer structure body of arunway foundation-imitated surface layer structure. When the airport runway foundation soil body is heated and cooled after being packaged in the heat insulation cylinder, heat conduction can only becarried out through the sealing cover, and the heat transfer effect of the airport runwayfoundation soil body can be truly simulated. The cooling change rule of the airfield runway foundation soil body under different conditions are repeatedly simulated and tested, and the relationship between the cooling change rule of the airfield runway foundation soil body and the saturation degree, the compaction degree and the room temperature is tested. Temperature distribution characteristics of different areas are compared after the temperature of the on-site pavement is collected and recorded, the temperature distribution characteristics are compared with an indoor test result, the water accumulation degree under the on-site pavement is analyzed and determined, and a technical basis with very high reference significance is provided for airport runway foundation accumulated water detection.
Description
technical field [0001] The invention belongs to the field of rock and soil test instruments, and in particular relates to a test method for accumulated water in road foundations of airports. Background technique [0002] The accumulation of water in the roadbed of the airport will cause serious engineering disasters. In winter, the water accumulated under the large area of impermeable road surface freezes and expands in volume. When the temperature rises, the volume thaws and shrinks, and the freeze-thaw cycle will cause deformation or cracking of the road surface , affecting the normal service of the airport. Therefore, it is very important to detect the accumulated water in the road foundation of the airport and deal with it in time in the maintenance and treatment of the airport. Contents of the invention [0003] The purpose of the present invention is to provide a test method that can provide a technical basis for the test of airport roadbed ponding. [0004] The ...
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IPC IPC(8): G01N25/20G01N25/18G01N25/58
CPCG01N25/18G01N25/20G01N25/58
Inventor 张升叶新宇彭锐盛岱超谢林伯刘蔚
Owner CENT SOUTH UNIV