摘要
以莲花水库引水隧道施工为工程背景,基于有限元分析原理,采用ANSYS建立了盾构结构的空间有限元模型,对松散体围岩地质条件下所设计的施工盾构结构进行了强度、刚度检算;并利用ANSYS的优化设计功能,对该结构进行了优化设计.结果表明:采用空间分析模型,较好地反映了盾构结构的实际受力情况,利用优化设计功能,有效地改善了盾构结构受力,结构钢材用量减小为原设计钢材用量的77.65%,降低了工程成本;本文的研究为同类工程提供一定的参考价值.
Taking the shield construction structure used for LianHua reservoir＇s diversion tunnel as engineer- ing background, the spatial finite element model of the shield construction structure is established by using ANSYS, which is based on the principle of finite element analysis. The strength and stiffness of the shield construction structural, which was designed under the broken rock geological environments, is checked mean- while. In addition, some optimization design of the shield construction structural is carried out by utilizing the optimization function of ANSYS. It is shown that the spatial analysis model developed in this paper can reflect the actual stress condition of the shield construction structure very well; and the force condition of this struc- ture has been improved by optimum design. The structural steel consumption of the project is also reduced to 77. 650/00 of the original design consumption. This study can provide a valid reference for similar projects.
出处
《三峡大学学报（自然科学版）》
CAS
2012年第6期28-31,共4页
Journal of China Three Gorges University：Natural Sciences
关键词
有限元
引水隧道
盾构结构
优化设计
finite elements
diversion tunnel
shield construction structure
optimum design
