摘要
本文从我国公路隧道的发展势态，叙述隧道衬砌设计方法的演变，对复合衬砌中的二次衬砌作用及内力计算作了简要介绍，商讨锚喷后减薄二次衬砌厚度的可能性和应注意的问题。
According to highway tunnel developing in our country,and saying an evolve from tunnel lining design method,this paper gives a simple introduction of second lining action and internal force calculation in complex lining, consult possibility of cutting down seeond lining thickness after anchoring and ejecting,as well as some question to be aware.
