考虑接头真实性能的盾构隧道衬砌结构计算模型与混合分析方法  

Structural Calculation Model and Hybrid Analysis of Shield Tunnel Segmental Linings with Consideration of the Real Behaviors of Joints

作　　者：张姣龙 柳献[1] 袁勇[1] Herbert MANG ZHANG Jiaolong;LIU Xian;YUAN Yong;Herbert MANG(College of Civil Engineering,Tongji University,Shanghai 200092;Institute for Mechanics of Materials and Structures,Vienna University of Technology,Vienna 1040)

机构地区：[1]同济大学土木工程学院,上海200092 [2]维也纳科技大学材料与结构力学研究所

出　　处：《现代隧道技术》2018年第5期72-78,87,共8页Modern Tunnelling Technology

基　　金：奥地利科学基金委(FWF)资助项目(P 281 31-N32);国家自然科学基金项目(51578409)

摘　　要：由于接头的存在,盾构隧道衬砌结构分析面临巨大的挑战。基于接头处的位移量测数据,混合分析方法可以有效地降低衬砌结构分析的复杂程度。但对于设计阶段的盾构隧道,接头处的位移量测数据是未知的。为此,文章基于圆形拱的线弹性理论的解析解,结合接头的线性刚度模型,针对盾构隧道衬砌结构的设计,提出了一种解析计算方法。为了验证线性接头刚度模型的适用性,该种解析方法被应用于盾构隧道衬砌结构足尺试验的分析并将相应的结构分析结果与已经发表的混合分析方法所得结果进行对比。结果表明:基于线性接头模型的结构分析能较好地计算内力的分布;在位移方面,该方法的预测精度尚有不足。Structural analysis of shield tunnel segment linings is a challenging task, due to the presence of segment-to-segment joints. Based on measured displacements at joints, hybrid analysis facilities structural analysis of tunnel segment linings significantly. However, the displacements at the joints are unknown for the tunnel linings under design. Therefore, based on the analytic solution of the linear elastic theory of circular arch and the linear stiffness model of joint, this paper proposes an analytical calculation method for the design of shield tunnel lining structure. In order to verify the applicability of the linear joint stiffness model, the analytical method is applied to the analysis of shield tunnel lining structure in a full scale test, and the corresponding structural analysis results are compared with the results obtained from the published literatures using hybrid analysis method. The results show that the structure analysis based on the linear joint model can well calculate the distribution of internal force. In the aspect of displacement, the prediction accuracy of this method is insufficient.

关 键 词：隧道工程 计算模型 混合分析 盾构隧道衬砌结构 接头模型 足尺试验 结构设计 

分 类 号：U451[建筑科学—桥梁与隧道工程] U452.2[交通运输工程—道路与铁道工程]