摘要
以平面有限元位移法对铁山隧道和大垭口隧道带裂纹二次支护内设钢筋混凝土衬套的补强效果进行了数值模拟。模拟结果表明:加了钢筋混凝土衬套后,可大大降低裂纹尖端的应力强度因子,显著地提高衬砌承载安全系数。
The strengthening effects of reinforced concrete liner cover for tunnel lining with crackles are investigated, and the numerical simulations for two computations of Tieshan tunnel and Dayakou tunnel are carried out by using a Two-dimensional finite element code. The computation results show that the stress intensity factors at the crackle tips can be decreased greatly; and the bearing safety factors of the linings can be raised obviously.
出处
《岩土力学》
EI
CAS
CSCD
北大核心
2005年第7期1058-1062,共5页
Rock and Soil Mechanics
关键词
隧道衬砌
裂纹
钢筋混凝土衬套
应力强度因子
平面有限元分析
Codes (standards)
Computer simulation
Finite element method
Reinforced concrete
Safety factor
Strengthening (metal)
Stress intensity factors
Two dimensional
