|Table of Contents|

Loading performances of pavement with assembled aluminum mats(PDF)

《交通运输工程学报》[ISSN:1671-1637/CN:61-1369/U]

Issue:
2015年06期
Page:
1-9
Research Field:
道路与铁道工程
Publishing date:

Info

Title:
Loading performances of pavement with assembled aluminum mats
Author(s):
CAI Liang-cai1;  ZHOU Shao-hui1;  XU Wei1;  CEN Guo-ping1;  YANG Wen-shan2
1. Department of Airport and Architecture Engineering, Air Force Engineering University, Xi’an 710038, Shaanxi, China; 2. Institute of Airport and Pavement Technology, Beijing 100195, China
Keywords:
airport engineering;  expedient airfield;  assembled mat;  traffic loading test;  deformation;  rut
PACS:
U416.212
DOI:
-
Abstract:
The strength of assembled aluminum mat was detected by four-point bending loading test. Two soil test sections with different strengths were built. Four aluminum honeycomb-sandwich mats with different thicknesses and strengths were paved on the test sections to simulate different pavements with assembled aluminum mats at expedient airfield. Light and heavy aircraft loads were simulated by using loaded cart. The deformations and ruts of the pavements under different loading times were measured and the control indexes were that the maximum rutting depth reached 30 mm and 20% mats were damaged. Experimental result indicates that the effective moduli of mats 1-4 are 1 616, 1 862, 2 064 and 2 328 MPa respectively. When mats 1-4 are installed over single-layer stabilized soil base and loaded by 75 kN, the vertical deformations of the pavements are respectively 35, 19, 10 and 12 mm after 400 loading times, and the relative maximum ruts are respectively 50, 28, 16 and 10 mm after 500 loading times. When mats 1-4 are installed over double-layer stabilized soil base and loaded by 150 kN, the vertical deformation of the pavement with mat 4 is 16 mm after 1 000 loading times, the relative maximum ruts of the pavements with mats 3 and 4 are 36 and 24 mm respectively, and the horizontal joints of mats sink obvious. Under the same base condition and loading times, mat 1 made of 3003 aluminum alloy is easier to damage compared with mats 2-4 made of 6A02 aluminum alloy, and the pavement constructed by mat 1 is easier to fail than the others. When mats 1-4 are installed over single-layer stabilized soil base and loaded by 75 kN, the matting pavements can meet the using requirements of light aircrafts. When mat 4 is installed over double-layer stabilized soil base, the matting pavement can meet the using requirements of heavy aircrafts. 8 tabs, 15 figs, 25 refs.

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