中南大学学报（自然科学版）2012，Vol.43Issue(7)：2746-2750,5.
铁路隧道混凝土衬砌爆破振动安全判据
Blasting vibration safety criterion of railway tunnel concrete lining
摘要
Abstract
According to stress wave theory, ultimate tensile stress criterion, ultimate tensile stress criterion and Mohr's criterion, the influences of blasting stress body-wave on tunnel concrete lining were studied, and the model of blasting vibration velocity criterion which is based on the safety of tunnel lining was established. Through the excavation blasting project adjacent to tunnel top, the blasting vibration velocity criterion was solved. The results indicate that the damage effect of blasting stress body-wave on tunnel concrete lining is mainly caused by P-wave; the lining is firstly produce tensile damage under the action of blasting vibration; the blasting vibration safety criterion of tunnel lining is 14.51 cm/s. The results are consistent with the safety regulations for blasting and provide scientific support for establishing the safety standard of tunnel structure.关键词
铁路隧道/混凝土衬砌/爆破振动/强度准则/安全判据Key words
railway tunnel/concrete lining/blasting vibration/strength criterion/safety criterion分类
交通工程引用本文复制引用
蒋楠,周传波,罗钢,苗高建..铁路隧道混凝土衬砌爆破振动安全判据[J].中南大学学报（自然科学版）,2012,43(7):2746-2750,5.基金项目
国家自然科学基金资助项目(41072219) （41072219）
