摘要
坑道开挖时土体的稳定是保证安全的前提,作为挡水结构的止水塞的承载能力也是非常重要的,数值模拟可以很好地预测和评估工程的施工安全.结合工程实际,采用ABAQUS有限元软件建立某深层坑道止水塞的三维有限元模型并进行数值模拟,重点分析了止水塞的应力状态及变形,并兼顾土体的稳定分析,以此评估工程的安全可靠性;考虑地下水的渗透作用,进行水-力耦合分析并对比分析结果,以此为类似工程提供参考.
The soil stability is the premise to ensure the safety during the tunnel excavation,and carrying capacity of the sealing plug which acts as water retaining structure is also very important.The numerical simulation can well forecast and evaluate the safety of construction. Combining with the actual engineering,the construction of the sealing plug of deep tunnel with 3Dfinite element model is simulated by using finite element software ABAQUS,which focused on analysis of the sealing plug stress state and deformation,as well as taking the soil stability into account,in order to evaluate the safety and reliability of this engineering.Considering the seepage effect of the ground water,the hydro-mechanical coupling analysis is performed and the results are compared and analyzed,which provides reference for the similar engineering.
作者
毕继红
郭心田
关健
Bi Jihong Guo Xintian Guan Jian(School of Civil Engineering, Tianjin University, Tianjin 300072, China Key Laboratory of Coast Civil Structure Safety, Ministry of Education, Tianjin University, Tianjin 300072,)
出处
《宁夏大学学报（自然科学版）》
CAS
2016年第3期316-320,共5页
Journal of Ningxia University(Natural Science Edition)
基金
国家自然科学基金资助项目(51227006)
关键词
深层土体
坑道开挖
止水塞
水-力耦合
deep soil
tunnel excavation
sealing plug
hydro-mechanical coupling
