路面工程英文版课程设计.docx

Part I Asphalt Pavement Design 1. Project Statement ?A newly-built highway is planned in Northeast China: — Design speed: 120km/h —Four-lane two-direction roads —Subgrade with: 24.5m=4*3.75+2*2.5(Hard shoulder) +2*1.5(soil shoulder) —Pav’t type: Asphalt pavement —Design life: 15 years ?Task: using the given conditions design asphalt pav’t structures for different road sections 2. Design data 2.1 Natural Geographical Conditions ?Natural Zone: II2 ?Soil Type: clay soils with a medium value of liquid limit ?Embankment: 0.6m of height ?Water table: 1.6m from the roadbed surface ?Climate: Annual Rainfall of 680mm; HT: 26.5C; LT: -34C ?Frost-thaw: ?Max frozen depth of 183cm; ?Frozen index of 1623C on average and 2140C in Max 2.2 Traffic Analysis 2.2.1 Axle load spectrum Traffic Composition (Table 1) Vehicle Type 1s+1d 1s+2d 1s+1d~2d 1s+2d~2d 1s+1d~3d 1s+2d~3d Traffic Volume 150 250 350 250 60 50 Load Spectrum of Single Axle (Table 2) Axle Load 20 30 40 50 60 70 80 90 100 Single tire 3.18% 10.56% 15.74% 37.35% 26.34% 4.68% 1.47% 0.68% 0.00% Duel tires 0.00% 3.75% 9.52% 9.98% 10.84% 4.03% 5.95% 4.58% 2.35% Axle Load 110 120 130 140 150 160 170 180 　 Single tire 0.00% 0.00% 0.00% 0.00% 0.00% 0.00% 0.00% 0.00% 　 Duel tires 7.53% 4.35% 8.23% 5.85% 4.35% 7.21% 7.85% 3.81% 　 Load Spectrum of Tandem Axles (Table 3) Axle Load 40 60 80 100 120 140 160 180 200 220 240 1s+2d 3.60% 7.30% 14.40% 18.00% 3.60% 7.30% 8.00% 10.90% 16.00% 10.90% 0.00% 1s+1d~2d 1.60% 5.30% 12.40% 16.00% 3.44% 6.70% 6.00% 7.43% 14.00% 8.90% 2.31% 1s+2d~2d 0.63% 0.90% 2.00% 1.38% 3.51% 5.97% 5.50% 7.21% 4.61% 3.74% 10.90% 1s+2d~3d 0.00% 0.00% 0.50% 2.34% 0.80% 6.96% 5.24% 7.66% 12.10% 18.60% 5.91% Axle Load 260 280 300 320 340 360 380 400 420 440 　 1s+2d 0.00% 0.00% 0.00% 0.00% 0.00% 0.00% 0.00% 0.00% 0.00% 0.00% 　 1s+1d~2d 4.35% 4.67% 2.74% 4.16% 0.00% 0.00% 0.00% 0.00% 0.00% 0.00% 　 1s+2d~2d 4.49% 8.08% 6.21% 7.74% 4.67% 5.12% 10.74% 3.21% 2.15% 1.24% 　 1s+2d~3d 3.10% 10.25% 4.78% 1.22% 1.65% 2.26%