遮阳棚在寒区道路工程中的应用研究 English Version
Application of awning to roadway engineering in permafrost regions
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摘要: 基于室内试验资料结果,结合数值模拟,以及风火山地区地温资料和风火山实验场现场观测资料,针对遮阳棚对公路铁路沿线路基底下多年冻土的保护作用以及对多年冻土上限的抬升效果进行了对比分析,进一步证实了遮阳棚措施的优越性和可行性。遮阳棚能有效阻挡减少太阳对地面地辐射,使得冻土上限得以较大幅度抬升,对保证道路安全与畅通起着至关重要的作用。Abstract: Based on the model test data indoors, combined with the numerical calculations and the measured temperatures of air and permafrost,and the test data of roadbed in Fenghuoshan, the protecting effects of the awning on the permafrost table along the road and railway in permafrost regions are compared. The superiority and feasibility of the awning are confirmed. The awning can resist the solar radiation to land surface effectively, and the ground surface temperature can descend 8 ℃~15 ℃, with a maximum difference of 24 ℃.The awning is very important to the safety of roadway.
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Keywords:
- awning /
- permafrost /
- permafrost table /
- roadway engineering
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