摘要
勉宁高速公路地处秦巴山区,沿线雨量充沛,挖方路段较多,部分路段路基地下水位过高,如不加以处治,势必会导致沉陷等各种道路病害。文章分析了地下水位对路基、路面结构性能的影响;结果表明地下水位过高会使路基湿度增大、模量降低,导致路表弯沉、面层层底拉应力增大;并在试验研究的基础上,提出在山体一侧设置盲沟,该措施可以有效地降低地下水位,确保路基的承载力。
Mianxian-Ningqiang Highway lies in the Qin-Ba mountain area which has excessive rainfall and there are many cut sections. If the subgrade water level becomes higher, all kinds of road damage, such as depression, will be induced. In the paper, the effect of underground water on road performance is analyzed. The results indicate that higher water levels will cause the subgrade humidity to become big and the modulus small and then deflection and tensile stress will become bigger. On the basis of testing, it is put forward that setting blind drains can make the water level decline markedly and guarantee the subgrade bearing capacity.
出处
《合肥工业大学学报（自然科学版）》
CAS
CSCD
北大核心
2006年第1期94-97,共4页
Journal of Hefei University of Technology：Natural Science
关键词
道路工程
排水设计
最佳含水量
拉应力
弯沉
盲沟
highway engineering
drainage design
optimal water content
tensile stress
deflection
blind drain
