盾构隧道弯螺栓接头力学特性受预紧力影响的数值研究

盾构隧道弯螺栓接头力学特性受预紧力影响的数值研究 English Version

基金项目: 国家重点研发计划项目（02016YFL0802403）; 国家自然科学基金项目（51778412,51378342）

详细信息

1. Key Laboratory of Coast Civil Structure Safety of Ministry of Education, Tianjin University, Tianjin 300354, China;
2. School of Civil Engineering, Tianjin University, Tianjin 300354, China

摘要: 利用ABAQUS有限元分析软件,通过数值模拟对盾构隧道弯螺栓接头在预紧力作用下的力学特性进行研究,为螺栓接头的设计和施工提供理论依据。采用符合混凝土受力特性的DP本构模型和符合钢材受力特性的塑性本构模型,研究预紧力对于弯螺栓接头力学特性的影响;施加不同的荷载,分析不同工况下预紧力作用效果的差异,揭示预紧力作用的机理。结果表明：预紧力改善了弯螺栓接头的力学特性,增强了螺栓约束管片的能力,减小了结构的整体变形。
- 盾构隧道 /
- 弯螺栓 /
- 预紧力 /
- DP模型
Abstract: With the help of ABAQUS FEM software, a numerical study is carried out on the mechanical properties of bent bolted connection in shield tunnel under the effect of preload, which offers theoretical evidence for the design and construction of bolted connection, considering the DP constitutive model fit for concrete as well as the plastic constitutive model fit for steel. The differences between the effect of preload under different load cases are analyzed, and the principle of the preload effect is revealed. The results show that the preload can improve the structural behavior of bent bolted connection, the restraint on the segment increases, and the entire deformation decreases.
- shield tunnel /
- bent bolt /
- preload /
- DP constitutive model

[1]	王湛. 软土地层中盾构隧道结构沉降与变形机制分析[D]. 杭州: 浙江大学, 2013. (WANG Zhan. Settlement and failure mechanism of shield tunnel in soft soil area[D]. Hangzhou: Zhejiang University, 2013. (in Chinese))
[2]	张建刚, 何川. 复杂接缝面管片接头的力学性能数值分析[J]. 地下空间与工程学报, 2013, 9(4): 1350-1354. (ZHANG Jian-gang, HE Chuan. Numerical analysis of mechanical property of shield tunnel segmental joint with complex interface[J]. Chinese Journal of Underground Space and Engineering, 2013, 9(4): 1350-1354. (in Chinese))
[3]	吴彪. 深圳地铁7 m盾构管片及螺栓受力现场测试及分析[D]. 北京: 北京交通大学, 2015. (WU Biao. Field test and analysis on a 7 m shield segment and bolt’ mechanics characteristic in Shenzhen metro engineering project[D]. Beijing: Beijing JiaoTong University, 2015. (in Chinese))
[4]	方恩权, 杨玲芝, 李晓军, 等. 地铁盾构隧道纵缝接头极限张开量研究[C]// 2014中国青岛城市轨道交通管理和技术创新研讨会论文集. 2014. (FANG En-quan, YANG Ling-zhi LI Xiao-jun, et al. The study of subway shield tunnel longitudinal seam joint limit opening[C]// Seminar papers of Qingdao China urban rail transit conference on management and technology, 2014. (in Chinese))

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