Barriers, which are normally used as highway safety instruments, cause adverse sand deposition damage to pavements along desert highways. To select a suitable barrier type for desert highways, this study conducted wind tunnel experiments and field test to measure the velocity field and sediment deposition morphology for different types of barriers. The results indicate that the velocity decreases in the foot of the subgrade, and the smooth air flow is maintained along the pavement. Wind velocity decreases slightly under the W-beam bottom, and the maximum velocity reduction is in the lee of the W-beam barrier. Wind velocity considerably decreases before and after the concrete barrier because of the dense structure of the barrier. Cable barriers slightly disturb the air flow and marginally decrease its velocity. Sediment deposition characteristic measurements demonstrate that for W-beam median barrier, sand is deposited on pavement in the lee of the barrier; further, for both W-beam roadside barrier and median barriers, sand is easy to be deposited in the front and back of the barrier, mainly on the windward pavement. For concrete barriers, considerable amount of sand is deposited in the front and back of the barriers, which induces the serious sand deposition damage on the pavement. The cable barrier causes minimal sand deposition, and it is a recommended structure for the barrier selection of desert highways. Further, small wind incidence angles are also favorable when designing desert highways.

通常用作公路安全工具的障碍物会对沙漠公路沿线的人行道造成不利的积砂破坏。为了选择适合沙漠公路的屏障类型，本研究进行了风洞实验和现场测试，以测量不同类型屏障的速度场和沉积物沉积形态。结果表明，路基脚部的速度降低，并且沿人行道保持了平稳的气流。W形梁底部下方的风速略有降低，并且最大速度降低在W形梁的背风处。由于屏障的致密结构，风速在混凝土屏障前后明显降低。电缆屏障会轻微干扰气流并略微降低其速度。沉积物沉积特性测量结果表明，对于W型梁正中屏障，沙子沉积在屏障背风的人行道上。此外，对于W型路边路障和中间路障，沙尘易于沉积在路障的前后，主要是在迎风路面上。对于混凝土屏障，在屏障的前部和后部沉积有大量的沙子，这会导致人行道上严重的沙子沉积损坏。电缆屏障可最大程度地减少沙粒沉积，是推荐用于沙漠公路屏障的结构。此外，在设计沙漠公路时较小的风入射角也是有利的。对于W型路边路障和中间路障，沙粒很容易沉积在路障的前后，主要是在迎风路面上。对于混凝土屏障，在屏障的前部和后部沉积有大量的沙子，这会导致人行道上严重的沙子沉积损坏。电缆屏障可最大程度地减少沙粒沉积，是推荐用于沙漠公路屏障的推荐结构。此外，在设计沙漠公路时，较小的风入射角也是有利的。对于W型路边路障和中间路障，沙尘易于沉积在路障的前后，主要是在迎风路面上。对于混凝土屏障，在屏障的前部和后部沉积有大量的沙子，这会导致人行道上严重的沙子沉积损坏。电缆屏障可最大程度地减少沙粒沉积，是推荐用于沙漠公路屏障的结构。此外，在设计沙漠公路时，较小的风入射角也是有利的。电缆屏障可最大程度地减少沙粒沉积，是推荐用于沙漠公路屏障的推荐结构。此外，在设计沙漠公路时，较小的风入射角也是有利的。电缆屏障可最大程度地减少沙粒沉积，是推荐用于沙漠公路屏障的推荐结构。此外，在设计沙漠公路时，较小的风入射角也是有利的。