An Airfield Soil Pavement Design Method Based on Rut Depth and Cumulative Fatigue

Abstract

The structure and damage modes of soil pavement, as well as existing problems in current design methods, were comprehensively analyzed, and a new design method for airfield soil pavement was proposed. The proposed method avoids the use of the “designed aircraft” concept and instead adopts the cumulative fatigue theory widely used in permanent airfield design at present. Moreover, in view of the lack of aircraft wheel trajectory distribution data, an approximate method for calculating the wheel trajectory distribution considering the side slip distance of the aircraft was proposed and the equivalent width of the wheel tread was calculated by introducing the modulus ratio. Finally, the pass-to-coverage ratio was obtained. According to the characteristics and damage modes of airfield soil pavement, rut depth was determined to be the unique factor affecting soil pavement damage, and resilient modulus was used as the control variable to improve the adverse impact of the empirical method. Furthermore, according to the rut prediction formula for airfield soil pavement put forward by the US Army Engineer Research and Development Center, a fatigue equation based on the resilient modulus was proposed to calculate the allowable number of repetitions. To verify the reliability of the design method, a test section was constructed at a test center in Jining, China, and the theoretical maximum allowable repetitions on the soil runway were calculated by the currently used California bearing ratio test, the β-fatigue equation, and the proposed method. Aircraft traffic tests were carried out on the test section. Finally, the theoretical and test results were compared and the values calculated via the proposed method were found to be consistent with experimental values, thereby validating the reliability of the method.

Application and research status of concrete canvas and its application prospect in emergency engineering

“…In this case, existing emergency repair and construction materials can no longer fully cope with new repair needs, and novel emergency repair materials and construction methods are in urgent need. [58][59][60][61][62] Considering that CC can be tailored at will into different shapes before hardening and that a coil of CC can provide a sufficiently long pavement distance, CC perfectly suits the emergency repair demands of airport and airdrome pavement. However, before using CC for the emergency repair and construction of airport pavements, two questions must be answered: (1) how can the compressive strength, flexural strength, and wear resistance of CC be improved; (2) how can the bond performance with the base course be enhanced.…”

Review of Runway Pavement Monitoring

“…A runway pavement structure consists of one or several layers of pavement [1] [2]. Its function is to support the weight of aircraft traffic loads without causing significant damage to the construction itself [3].…”

Study of SPRC Impact Resistance Based on the Weibull Distribution and the Response Surface Method

“…For example, concrete is widely used in bridge structures, pile foundations, aircraft runways, dams and offshore platforms. However, these structures are subjected to various dynamic loads during their service, such as traveling loads [ 3 , 4 , 5 ], aircraft landings [ 6 ], waves [ 7 ], earthquakes [ 8 ], and other dynamic loading effects. These unavoidable human [ 9 , 10 , 11 ] and natural factors [ 12 ] present serious challenges to the safety of concrete structures.…”