岩土力学2018，Vol.39Issue(1)：275-286,12.DOI:10.16285/j.rsm.2016.0124
湛江湾高水头跨海盾构隧道管片结构典型断面受力计算与监测反馈分析
Force determination and monitoring feedback analysis of typical sections of lining structure of cross-sea shield tunnel under high head in Zhanjiang bay
摘要
Abstract
Currently,Zhanjiang bay tunnel is the deepest cross-sea shield tunnel in China.The tunnel segments are connected by oblique bolts with staggered arrangements.In this study,the forces in the maximum covering soil section and the maximum water depth section were calculated by a modified usage method and a beam-spring method,respectively.Then the distribution pattern of water-earth pressure was analyzed by comparing theoretical results with measured results of segment stress and water-earth pressure.The analytical results show that both of the modified usage method and the beam-spring method can well simulate the stress state of tunnel segment.Especially,the results calculated by beam-spring method is relatively closer to measured results than those by the modified usage method.It is found that segments are in flattening states and the results obtained by beam-spring method are greatly affected by the position of capping blocks.Terzaghi's relaxed earth pressure and the linear distribution of water-earth pressure are also applicable and safe for the deeply buried submarine tunnel.In this project,the lateral load of the segment is dominated by radial water pressure,which mainly affected the axial force.Therefore,this study can provide a useful reference for the design and construction of high-head cross-sea shield tunnel segments in the future.关键词
梁-弹簧法/修正惯用法/跨海盾构隧道/管片受力分析/监测反馈分析Key words
beam-spring method/modified usage method/cross-sea shield tunnel/force analysis of segments/monitoring feedback分类
建筑与水利引用本文复制引用
姜燕,杨光华,陈富强,徐传堡,张玉成..湛江湾高水头跨海盾构隧道管片结构典型断面受力计算与监测反馈分析[J].岩土力学,2018,39(1):275-286,12.基金项目
广东省省级科技计划项目(No.2014B070706008) （No.2014B070706008）
国家自然科学基金(No.51378131).This work was supported by Science and Technology Planning Project of Guangdong Province (2014B070706008) and the National Natural Science Foundation of China (51378131). （No.51378131）
