摘要
对影响软土盾构法隧道长期纵向沉降的主要因素进行了研究,并以已运营近40 a的上海打浦路隧道圆隧道纵向沉降变形长期观测结果,对该隧道的纵向长期变形形态、纵向差异变形曲率、隧道纵向变形与隧道渗漏的关系、圆隧道与竖井的差异沉降等进行了分析。研究显示,隧道的长期纵向变形受隧道周围水文地质条件、外部荷载、隧道自身的结构特点、隧道的渗漏水状态等条件的影响,总体上需要较长时间才能趋于稳定,且对周边环境变化的反应较为敏感。
The influence factors of longterm longitudinal settlement of the tunnel by soft soil shield method are analyzed.The longterm settlement & deformation observations have been acquired from Shanghai Dapu Rd.Tunnel operated for near 40 years including longitudinal long-term deformation shape,vertical differential deformation curvature,the relationship between longitudinal deformation and the tunnel leakage and the differential settlements of the round tunnel & the shaft.Results show that tunnel's longitudinal deformation has relationship with the hydrogeology and engineering geology,the external load on the tunnel lining,the structural characteristics of the tunnel and leakage of water status.As a whole,it generally takes a longer time to stabilize with being more sensitive to environmental changes.
出处
《中国市政工程》
2013年第5期89-91,109-110,共3页
China Municipal Engineering
关键词
盾构隧道
纵向沉降
沉降
渗漏
shield tunnel
longitudinal settlement
settlement
leakage
