摘要
干寒区"锅盖效应"会引起路基、道基上部含水率增加,进而诱发路基、道基强度降低及盐胀等问题,最终导致路面、道面破坏,影响正常通车、通航。干寒区"锅盖效应"水分来源主要为冷凝或冷冻作用,基于这一机理认识,针对干寒区"锅盖效应"的致灾机理进行阐述;结合兰州中川机场、敦煌机场两个工程案例进行灾害的成因分析和讨论,提出了灾害的防治建议。
Pot-cover effect in dry and cold areas may cause the increase of water content in the surface of the subgrade of road and airport,which can induce subgrade＇s strength reduction and salt expansion. Then the pavement is destroyed and its working performance is seriously influenced. The main resource of water of pot-cover effect in dry and cold areas is the condensation or desublimation effect. Based on the comprehension of pot-cover effect,the mechanism of disaster caused by it was analyzed. Two cases of Lanzhou Zhongchuan Airport and Dunhuang Airport were discussed,and some suggestions on preventing theses disasters were given.
出处
《工业建筑》
CSCD
北大核心
2016年第9期21-24,共4页
Industrial Construction
基金
国家"973计划"项目(2014CB047006)
国家自然科学基金项目(11272031)
关键词
锅盖效应
冷凝
冷冻
机场
跑道
路基
pot-cover effect
condensation
desublimation
airport
runway
subgrade
