Reliability Analysis of Asphalt Pavement Structure Based on the Fuzzy Mathematics Theory

LIU Junqing; HAN Jing

doi:10.21656/1000-0887.380278

Volume 39 Issue 9

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LIU Junqing, HAN Jing. Reliability Analysis of Asphalt Pavement Structure Based on the Fuzzy Mathematics Theory[J]. Applied Mathematics and Mechanics, 2018, 39(9): 1081-1090. doi: 10.21656/1000-0887.380278

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Reliability Analysis of Asphalt Pavement Structure Based on the Fuzzy Mathematics Theory

doi: 10.21656/1000-0887.380278

School of Science, Xi’an University of Architecture and Technology, Xi’an 710055, P.R. China

Funds: The National Natural Science Foundation of China（51178387）

Received Date: 2017-10-31
Rev Recd Date: 2017-12-15
Publish Date: 2018-09-15

Abstract

Abstract

The fuzzy mathematics theory was introduced into the analysis of asphalt pavement structure reliability, to better fit the actual condition of pavement. The failure membership function was first given for asphalt pavement structure, then with the road surface deflection value as the control index, the asphalt pavement structure fuzzy reliability calculation model was built and verified with 2 asphalt roads in the Xixian New Area. The results show that, in a fuzzy event, the fuzzy reliability is always lower than the traditional reliability. Based on this, the reliability design of the pavement structure with the fuzzy reliability can strengthen the pavement performance and prolong the service life of pavement. In service, under the fuzzy reliability the pavement damage degree due to environmental factors is less than that under the traditional reliability, thus reducing the amount of pavement maintenance and saving manpower and maintenance cost. The values of k and fuzzy critical intervals of the selected membership functions play a direct role in the magnitude of the fuzzy reliability. Through the calculation of different road combinations and different k values, it is found that the reasonable value of k is within 800σ^-2_Z~1 800σ^-2_Z.In the real engineering practice, the critical interval shall be determined according to the actual situation, so as to ensure the safety of the structure.
- road engineering,
- structural reliability degree,
- fuzzy mathematics theory,
- asphalt pavement structure,
- membership function,
- pavement deflection

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References(16)

References

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