地面出入式盾构隧道稳定性控制措施有效性研究  

Analysis of the Stability Control Measures for a Ground-Penetrating Shield Tunnel

作　　者：吴惠明[1,2] 滕丽 于亚磊 叶冠林[4] 

机构地区：[1]上海大学,上海200072 [2]上海隧道工程股份有限公司,上海200082 [3]上海市地下空间设计研究总院有限公司,上海200032 [4]上海交通大学土木工程系,上海200240

出　　处：《现代隧道技术》2014年第5期61-65,共5页Modern Tunnelling Technology

基　　金：上海市科委项目(11231202700)

摘　　要：文章以南京地面出入式盾构工程为背景,采用三维有限元模拟了地面出入式盾构隧道的整个施工过程,通过在模型中施加隧道内部压重与地表堆载,研究了两者对控制隧道上浮量、提高隧道稳定性的有效性。分析计算结果与现场监测数据表明:内部压重能够明显地提高隧道的稳定性,且效果比较明显;地表堆载也能在一定程度上减小隧道的上浮量,但其效果没有内部压重明显;施工中应结合现场实际条件,综合采用两者来实现最佳的稳定隧道效果。Based on the Nanjing ground-penetrating shield tunnel project,the finite-element simulation method is adopted to simulate the whole construction process of the ground-penetrating shield.An internal counterweight and surface loading are imposed on the model to analyze their effectiveness at controlling floating and improving stability of the tunnel.The results show that the internal counterweight can significantly improve the stability of the tunnel,while surface loading can reduce tunnel floating to some extent without obvious effects.According to in-situ conditions,the best way to realize the optimum stability of the tunnel is the combination of an internal counterweight and surface loading.

关 键 词：地面出入式盾构 隧道上浮 内部压重 地表堆载 稳定性 

分 类 号：U455.43[建筑科学—桥梁与隧道工程]