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对拼装式铝道面板试样进行了四点弯曲试验以检测其强度。修建了2条不同强度的土质试验段,分别铺设了4种不同厚度与强度的蜂窝铝夹芯道面板,构建了不同类型的简易机场拼装式铝道面板道面结构,采用加载车模拟轻型与重型飞机荷载,以最大车辙达到30mm与20%的道面板出现损坏作为控制标准,测试了拼装式道面板道面结构在不同轮载作用次数下的变形与表面车辙。试验结果表明:道面板1~4的有效综合模量分别为1 616、1 862、2 064、2 328 MPa;当道面板1~4分别铺设在单层稳定土基层上时,采用75kN荷载作用,400次通行后各道面结构的竖向变形分别为35、19、10、12mm,500次通行后各道面结构最大相对车辙分别为50、28、16、10mm;当道面板铺设在双层稳定土基层上时,采用150kN通行荷载作用,1 000次通行后铺设道面板4的道面结构的竖向变形仅为16mm,铺设道面板3、4的道面结构的最大相对车辙分别为36、24mm,道面板横向连接处易凹陷。可见,在相同基层条件与通行荷载作用下,采用3003型铝合金材料构造的道面板1相对采用6A02型铝合金材料构造的道面板2~4更易损坏,相应的道面结构也更易失效;道面板2~4铺设在单层稳定土基层上能满足轻型飞机低架次通行要求,道面板4铺设在双层稳定土基层上能够满足重型飞机的使用要求。
Four-point bending test was performed on assembled aluminum panel samples to test their strength. Two soil test sections with different strength were built. Four kinds of honeycomb sandwich panel with different thickness and strength were laid, and different types of airstrip aluminum composite panel pavement structures were constructed. The loading car was used to simulate the light and Heavy aircraft load to the maximum rut 30mm and 20% of the damage to the road panel as a control standard, test the assembled road surface structure of the pavement under different wheel loads the role of deformation and surface rutting. The test results show that the effective composite moduli of 1 ~ 4 for pavement slab are 1 616, 1 862, 2 064 and 2 328 MPa, respectively. When the pavement slabs 1 ~ 4 are laid on the monolayer stabilized soil base respectively, After 400 passes, the vertical deformation of each pavement structure was 35, 19, 10, and 12 mm, respectively. The maximum relative rutting of pavement structures after 500 passes was 50, 28, 16 and 10 mm respectively. When using 150kN traffic load, the vertical deformation of the pavement structure paving the pavement 4 after 1000 passes is only 16mm. The maximum relative rutting of pavement structures paving the pavement panels 3 and 4 is 36, 24mm, road panel transverse connection easy to depression. It can be seen that the pavement slab 1 constructed of 3003 aluminum alloy is more easily damaged than the pavement slab 2 ~ 4 constructed of 6A02 aluminum alloy under the same grassroots conditions and passing loads, and the corresponding pavement structure is more likely to fail. Panels 2 to 4 are laid on a single stratum of stable soil base to meet the requirements of low-level traffic of light aircraft. The pavement panels 4 are laid on a double-stabilized stratum to meet the requirements of heavy aircraft.