摘要
为了提高深埋软硬互层地质的长距离隧道施工效率和质量,提出基于隔离桩盾构隧道开挖技术的深埋软硬互层地质长距离隧道TBM施工方法,采用模糊约束控制方法进行长距离隧道TBM施工的盾构参数优化设计,对弯矩、水平位移、轴力等参数进行准确计算,针对深埋软硬互层地质土体的各向异性和复杂边界条件进行长距离隧道施工过程中的地基土层基本物理力学指标优化设计,实现隔离桩盾构隧道开挖施工优化设计。测试结果表明,采用该方法进行深埋软硬互层地质的长距离隧道施工的弯矩控制性能较好,水平位移和沉降的效能较好,提高了深埋软硬互层地质的长距离隧道施工的质量。
In order to improve the construction efficiency and quality of long- distance tunnel in deep buried soft-hard interlayer geology, the TBM construction method of deep buried soft-hard interbedded long-distance tunnel based on shield tunnel excavation technology with isolation pile is put forward. Fuzzy constraint control method is used to optimize the parameters of shield in TBM construction of long-distance tunnel, and the parameters of bending moment, horizontal displacement and axial force are calculated accurately. In view of the anisotropy and complex boundary conditions of deep buried soft-hard interbedded geological soil, the basic physical and mechanical indexes of foundation soil during the construction of long-distance tunnel are optimized, and the optimum design of shield tunnel excavation with isolation piles is realized. The test results show that the bending moment control performance, horizontal displacement and settlement efficiency of long-distance tunnel construction with deep-buried soft-hard interbedded geology are better, and the quality of long-distance tunnel construction with deep-buried soft-hard interbedded geology is improved.
作者
赵维东
ZHAO Weidong(China Railway 18 Bureau Group Tunnel Engineering Co.,Ltd.,Chongqing 833300,China)
出处
《安阳工学院学报》
2019年第2期69-72,95,共5页
Journal of Anyang Institute of Technology
基金
国家自然基金项目(编号ZR18390)
关键词
深埋软硬互层地质
长距离隧道
TBM施工
弯矩控制
deep buried soft-hard interlayer geology
long distance tunnel
TBM construction
moment control
