铁道标准设计
鐵道標準設計
철도표준설계
RAILWAY STANDARD DESIGN
2013年
12期
87-89,121
,共4页
隧道施工%强度折减法%改进CRD法
隧道施工%彊度摺減法%改進CRD法
수도시공%강도절감법%개진CRD법
tunnel construction%strength reduction method%improved CRD construction method
将有限元强度折减法应用于隧道工程围岩稳定性的分析，对改进的CRD法施工阶段围岩的安全、稳定性进行深入研究。结合哈大客运专线笔架山浅埋隧道改进CRD法施工方案，考虑围岩-结构的相互作用，应用有限元软件ANSYS动态分析施工过程中围岩的安全系数，通过等效塑性应变参数研究隧道的失稳形式。研究结果表明：有限元强度折减法可有效应用于隧道开挖阶段的安全定量评估。
將有限元彊度摺減法應用于隧道工程圍巖穩定性的分析，對改進的CRD法施工階段圍巖的安全、穩定性進行深入研究。結閤哈大客運專線筆架山淺埋隧道改進CRD法施工方案，攷慮圍巖-結構的相互作用，應用有限元軟件ANSYS動態分析施工過程中圍巖的安全繫數，通過等效塑性應變參數研究隧道的失穩形式。研究結果錶明：有限元彊度摺減法可有效應用于隧道開挖階段的安全定量評估。
장유한원강도절감법응용우수도공정위암은정성적분석，대개진적CRD법시공계단위암적안전、은정성진행심입연구。결합합대객운전선필가산천매수도개진CRD법시공방안，고필위암-결구적상호작용，응용유한원연건ANSYS동태분석시공과정중위암적안전계수，통과등효소성응변삼수연구수도적실은형식。연구결과표명：유한원강도절감법가유효응용우수도개알계단적안전정량평고。
In this thesis, the finite element strength reduction method was used for the stability analysis of surrounding rock in the process of tunneling, in order to closely study the safety and stability of surrounding rock in the process of tunneling by improved CRD construction method. Meanwhile, combining with the tunneling scheme under the improved CRD construction method for the Bijiashan shallowly-buried tunnel on Harbin-Dalian passenger-dedicated line, considering the interaction between the surrounding rock and the structure, using finite element software ANSYS, the thesis dynamically analyzed the safety factors of surrounding rock in the process of tunneling, and researched the instability features of the tunnel by means of equivalent plastic strain coefficient. The research result indicates that the finite element strength reduction method can effectually be used for the quantitative safety evaluation of the tunnel in the process of tunneling.
