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为深入指导西藏地区各区域沥青路面设计,针对西藏地区气候状况、交通状况和在役沥青路面病害展开全面调研,评估西藏地区各区域沥青路面病害产生原因。调查与分析表明西藏地区主要交通量为轻型交通,路面病害受环境影响非常显著;气候总体上可以分为西北严寒区和东南温暖湿润区;西藏地区公路路面结构型式较为单一,结构设计没有充分考虑各地区气候条件、交通荷载条件、地形地貌、路基土质等因素的差异;由于沥青老化导致的路面开裂和松散是西藏地区沥青路面的共性病害。
In order to further guide the design of asphalt pavement in various regions of Tibet, a comprehensive survey was conducted on the climatic conditions, traffic conditions and the existing disease of asphalt pavement in Tibet to evaluate the causes of asphalt pavement diseases in various regions of Tibet. The survey and analysis show that the main traffic volume in Tibet is light traffic, and the road disease is very affected by the environment. The climate can be divided into the northwestern cold area and the southeast warm humid area as a whole. The pavement structure type in Tibet is relatively single, and the structural design is not fully considered The climatic conditions, traffic load conditions, topography and subgrade soil quality in different regions; the cracking and looseness of pavement due to the aging of asphalt are the common diseases of asphalt pavement in Tibet.