盾构施工振动振源的影响因素研究

发布时间：2018-04-03 17:28

本文选题：盾构施工　切入点：振动　出处：《地震工程学报》2014年03期

【摘要】：以北京地铁8号线盾构施工工程为研究背景,针对线路区间内的典型工况,通过在盾构施工作业面进行的现场振动测试工作,得到盾构施工振动振源的幅频特性。在这些工作的基础上,首先利用灰关联熵分析方法对影响振源振动的因素进行影响因素的敏感性分析,其次利用多元回归分析方法对影响振源振动的主要影响因素进行回归分析,主要的成果包括:(1)首次提出了盾构施工振源的主控因素—地层条件及其量化特征参数—掌子面地层加权动弹性模量,以及影响振动的主要施工参数—刀盘扭矩、总推力;(2)建立了盾构施工振动振源的回归模型,相关性显著。这些工作为进一步实施盾构施工振动对周围环境的影响的分析、预测、施工控制提供了基础,填补了相关研究的空白。
[Abstract]:Based on the research background of shield tunneling project of Beijing Metro Line 8, the amplitude and frequency characteristics of vibration source in shield construction are obtained through the field vibration test work carried out on the operating surface of shield tunneling in view of typical working conditions in the line section.On the basis of these works, the sensitivity of the factors affecting vibration of vibration source is analyzed by grey correlation entropy analysis method.Secondly, the multivariate regression analysis is used to analyze the main factors that affect the vibration of vibration source.The main results include: (1) for the first time, the main controlling factors of vibration source in shield tunneling, the formation condition and its quantitative characteristic parameter, the weighted dynamic elastic modulus of the palmtop stratum, and the main construction parameter, the cutter torque, which affect the vibration are put forward for the first time.The regression model of vibration source in shield construction is established, and the correlation is significant.These works provide the basis for further analysis, prediction and construction control of the impact of shield construction vibration on the surrounding environment, and fill the gaps in relevant research.
【作者单位】：北京市勘察设计研究院有限公司;
【基金】：北京市科技新星计划资助(Z131106000413084) 北京市轨道交通建设管理有限公司支持项目
【分类号】：U455.43

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