摘要
在应用有限元法对盾构隧道管片内力进行研究的过程中 ,用接头单元来模拟管片之间的连接 ,并从理论上推导出管片横向接头刚度的近似表达式 ,进而计算分析在土体及管片自重作用下 ,接头刚度对管片内力的影响。文章推导了接头刚度的计算公式 ,并结合工程实例 ,给出了计算结果 。
In analyzing the internal force of shield tunnel lining by FEM, the contact between two linked segments is simulated by a joint element with the approximate expression for segment joint stiffness derived theoretically. Then the effect of the end joint stiffness on the internal force in the segments under the weight of soil and lining are calculated and analyzed. The calculation formula for joint stiffness is deduced in the paper with an engineering example, which can be referred to by segment design.
出处
《现代隧道技术》
EI
2003年第4期14-19,共6页
Modern Tunnelling Technology
关键词
盾构隧道
管片接头
内力
有限元法
Shield tunnel
Segment end joint
Stiffness
Internal force