摘要
采用土压平衡式盾构施工,具有自动化程度高、施工速度快、对地面环境影响小的特点,已广泛应用于各类型隧道修建工程。针对土压平衡式盾构推进系统,在随机载荷条件下,构建出系统推力的力学模型,基于力均方差最小和相对偏差最小的原则,完成了液压缸布局优化方法的研究,并采用优化模型对现有直径为6.28m盾构推进系统进行了布局分析和设计。结果表明:优化后的布局比现有布局更有利于避免管片被压溃,为盾构推进系统的设计与开发建立了理论基础。
Earth pressure balance shields used in excavating tunneling are highly automated, allow rapid installation, and are environmentally friendly. A mechanical model is given for the thrust system of the earth pressure balance for random loads. A minimum mean square error and minimum relative deviation are given for an optimization model for the cylinder layout. The model is used to analyze the layout for the drive system of a shield machine with a diameter of 6.28 m. The results show that the optimized layout more effectively prevents segment cracks than before to provide an important theoretical foundation for the design of thrust systems.
出处
《清华大学学报（自然科学版）》
EI
CAS
CSCD
北大核心
2010年第8期1248-1252,共5页
Journal of Tsinghua University(Science and Technology)
基金
国家"九七三"重点基础研究发展计划项目(2007CB714007)
国家"八六三"高技术项目(2006AA04Z133
2007AA041901)
关键词
土压平衡式盾构
推进系统
随机载荷
优化设计
earth pressure balance shield machines
thrust system
random load
optimization design
